`#pragma once` for app, base, chrome, gfx, ipc, net, skia, views

BUG=50273
TEST=everything still builds, build is 10% faster on windows, same speed on mac/linux

TBR: erg

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@53716 0039d316-1c4b-4281-b951-d872f2087c98

125 files changed, 125 insertions, 0 deletions

diff --git a/chrome/browser/sync/abstract_profile_sync_service_test.h b/chrome/browser/sync/abstract_profile_sync_service_test.h
index 703962d..24f61df 100644
--- a/chrome/browser/sync/abstract_profile_sync_service_test.h
+++ b/chrome/browser/sync/abstract_profile_sync_service_test.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ABSTRACT_PROFILE_SYNC_SERVICE_TEST_H_
 #define CHROME_BROWSER_SYNC_ABSTRACT_PROFILE_SYNC_SERVICE_TEST_H_
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/engine/all_status.h b/chrome/browser/sync/engine/all_status.h
index 63edd17..a9f618d 100644
--- a/chrome/browser/sync/engine/all_status.h
+++ b/chrome/browser/sync/engine/all_status.h
@@ -7,6 +7,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_ALL_STATUS_H_
 #define CHROME_BROWSER_SYNC_ENGINE_ALL_STATUS_H_
+#pragma once
 
 #include <map>
 
diff --git a/chrome/browser/sync/engine/apply_updates_command.h b/chrome/browser/sync/engine/apply_updates_command.h
index c70a517..6a09f2e 100644
--- a/chrome/browser/sync/engine/apply_updates_command.h
+++ b/chrome/browser/sync/engine/apply_updates_command.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_APPLY_UPDATES_COMMAND_H_
 #define CHROME_BROWSER_SYNC_ENGINE_APPLY_UPDATES_COMMAND_H_
+#pragma once
 
 #include "chrome/browser/sync/engine/model_changing_syncer_command.h"
 #include "chrome/browser/sync/util/sync_types.h"
diff --git a/chrome/browser/sync/engine/auth_watcher.h b/chrome/browser/sync/engine/auth_watcher.h
index 80fd662..f853642 100644
--- a/chrome/browser/sync/engine/auth_watcher.h
+++ b/chrome/browser/sync/engine/auth_watcher.h
@@ -7,6 +7,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_AUTH_WATCHER_H_
 #define CHROME_BROWSER_SYNC_ENGINE_AUTH_WATCHER_H_
+#pragma once
 
 #include <map>
 #include <string>
diff --git a/chrome/browser/sync/engine/authenticator.h b/chrome/browser/sync/engine/authenticator.h
index 710fad3..1abca3c 100644
--- a/chrome/browser/sync/engine/authenticator.h
+++ b/chrome/browser/sync/engine/authenticator.h
@@ -11,6 +11,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_AUTHENTICATOR_H_
 #define CHROME_BROWSER_SYNC_ENGINE_AUTHENTICATOR_H_
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/engine/build_and_process_conflict_sets_command.h b/chrome/browser/sync/engine/build_and_process_conflict_sets_command.h
index e2edb22..cea1d79 100644
--- a/chrome/browser/sync/engine/build_and_process_conflict_sets_command.h
+++ b/chrome/browser/sync/engine/build_and_process_conflict_sets_command.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_BUILD_AND_PROCESS_CONFLICT_SETS_COMMAND_H_
 #define CHROME_BROWSER_SYNC_ENGINE_BUILD_AND_PROCESS_CONFLICT_SETS_COMMAND_H_
+#pragma once
 
 #include <vector>
 
diff --git a/chrome/browser/sync/engine/build_commit_command.h b/chrome/browser/sync/engine/build_commit_command.h
index f2f4516..5ac7477 100644
--- a/chrome/browser/sync/engine/build_commit_command.h
+++ b/chrome/browser/sync/engine/build_commit_command.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_BUILD_COMMIT_COMMAND_H_
 #define CHROME_BROWSER_SYNC_ENGINE_BUILD_COMMIT_COMMAND_H_
+#pragma once
 
 #include "base/basictypes.h"
 #include "chrome/browser/sync/engine/syncer_command.h"
diff --git a/chrome/browser/sync/engine/change_reorder_buffer.h b/chrome/browser/sync/engine/change_reorder_buffer.h
index 9da05e3..d4ff1b6 100644
--- a/chrome/browser/sync/engine/change_reorder_buffer.h
+++ b/chrome/browser/sync/engine/change_reorder_buffer.h
@@ -8,6 +8,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_CHANGE_REORDER_BUFFER_H_
 #define CHROME_BROWSER_SYNC_ENGINE_CHANGE_REORDER_BUFFER_H_
+#pragma once
 
 #include <map>
 #include <vector>
diff --git a/chrome/browser/sync/engine/cleanup_disabled_types_command.h b/chrome/browser/sync/engine/cleanup_disabled_types_command.h
index fb06724..26140b4 100644
--- a/chrome/browser/sync/engine/cleanup_disabled_types_command.h
+++ b/chrome/browser/sync/engine/cleanup_disabled_types_command.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_CLEANUP_DISABLED_TYPES_COMMAND_H_
 #define CHROME_BROWSER_SYNC_ENGINE_CLEANUP_DISABLED_TYPES_COMMAND_H_
+#pragma once
 
 #include "chrome/browser/sync/engine/syncer_command.h"
 
diff --git a/chrome/browser/sync/engine/conflict_resolver.h b/chrome/browser/sync/engine/conflict_resolver.h
index 5157077..5880ae4 100644
--- a/chrome/browser/sync/engine/conflict_resolver.h
+++ b/chrome/browser/sync/engine/conflict_resolver.h
@@ -7,6 +7,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_CONFLICT_RESOLVER_H_
 #define CHROME_BROWSER_SYNC_ENGINE_CONFLICT_RESOLVER_H_
+#pragma once
 
 #include <set>
 #include <string>
diff --git a/chrome/browser/sync/engine/download_updates_command.h b/chrome/browser/sync/engine/download_updates_command.h
index 37c00d3..4b68531 100644
--- a/chrome/browser/sync/engine/download_updates_command.h
+++ b/chrome/browser/sync/engine/download_updates_command.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_DOWNLOAD_UPDATES_COMMAND_H_
 #define CHROME_BROWSER_SYNC_ENGINE_DOWNLOAD_UPDATES_COMMAND_H_
+#pragma once
 
 #include "base/basictypes.h"
 #include "chrome/browser/sync/engine/model_safe_worker.h"
diff --git a/chrome/browser/sync/engine/get_commit_ids_command.h b/chrome/browser/sync/engine/get_commit_ids_command.h
index 40f8134..d10d6ed 100644
--- a/chrome/browser/sync/engine/get_commit_ids_command.h
+++ b/chrome/browser/sync/engine/get_commit_ids_command.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_GET_COMMIT_IDS_COMMAND_H_
 #define CHROME_BROWSER_SYNC_ENGINE_GET_COMMIT_IDS_COMMAND_H_
+#pragma once
 
 #include <utility>
 #include <vector>
diff --git a/chrome/browser/sync/engine/idle_query_linux.h b/chrome/browser/sync/engine/idle_query_linux.h
index ef7a075..ef91bdd 100644
--- a/chrome/browser/sync/engine/idle_query_linux.h
+++ b/chrome/browser/sync/engine/idle_query_linux.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_IDLE_QUERY_LINUX_H_
 #define CHROME_BROWSER_SYNC_ENGINE_IDLE_QUERY_LINUX_H_
+#pragma once
 
 #include "base/scoped_ptr.h"
 
diff --git a/chrome/browser/sync/engine/mock_model_safe_workers.h b/chrome/browser/sync/engine/mock_model_safe_workers.h
index 13d66aa..3d0aa8a 100644
--- a/chrome/browser/sync/engine/mock_model_safe_workers.h
+++ b/chrome/browser/sync/engine/mock_model_safe_workers.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_MOCK_MODEL_SAFE_WORKERS_H_
 #define CHROME_BROWSER_SYNC_ENGINE_MOCK_MODEL_SAFE_WORKERS_H_
+#pragma once
 
 #include "chrome/browser/sync/engine/model_safe_worker.h"
 
diff --git a/chrome/browser/sync/engine/model_changing_syncer_command.h b/chrome/browser/sync/engine/model_changing_syncer_command.h
index c08ade2..ae59272 100644
--- a/chrome/browser/sync/engine/model_changing_syncer_command.h
+++ b/chrome/browser/sync/engine/model_changing_syncer_command.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_MODEL_CHANGING_SYNCER_COMMAND_H_
 #define CHROME_BROWSER_SYNC_ENGINE_MODEL_CHANGING_SYNCER_COMMAND_H_
+#pragma once
 
 #include "chrome/browser/sync/engine/syncer_command.h"
 
diff --git a/chrome/browser/sync/engine/model_safe_worker.h b/chrome/browser/sync/engine/model_safe_worker.h
index 7b84fd3..5d749d8 100644
--- a/chrome/browser/sync/engine/model_safe_worker.h
+++ b/chrome/browser/sync/engine/model_safe_worker.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_MODEL_SAFE_WORKER_H_
 #define CHROME_BROWSER_SYNC_ENGINE_MODEL_SAFE_WORKER_H_
+#pragma once
 
 #include <map>
 #include <string>
diff --git a/chrome/browser/sync/engine/net/server_connection_manager.h b/chrome/browser/sync/engine/net/server_connection_manager.h
index f864702..d6bfdde 100644
--- a/chrome/browser/sync/engine/net/server_connection_manager.h
+++ b/chrome/browser/sync/engine/net/server_connection_manager.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_NET_SERVER_CONNECTION_MANAGER_H_
 #define CHROME_BROWSER_SYNC_ENGINE_NET_SERVER_CONNECTION_MANAGER_H_
+#pragma once
 
 #include <iosfwd>
 #include <string>
diff --git a/chrome/browser/sync/engine/net/syncapi_server_connection_manager.h b/chrome/browser/sync/engine/net/syncapi_server_connection_manager.h
index f94799d..67424b9 100644
--- a/chrome/browser/sync/engine/net/syncapi_server_connection_manager.h
+++ b/chrome/browser/sync/engine/net/syncapi_server_connection_manager.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_NET_SYNCAPI_SERVER_CONNECTION_MANAGER_H_
 #define CHROME_BROWSER_SYNC_ENGINE_NET_SYNCAPI_SERVER_CONNECTION_MANAGER_H_
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/engine/net/url_translator.h b/chrome/browser/sync/engine/net/url_translator.h
index 717e15b..c460c08 100644
--- a/chrome/browser/sync/engine/net/url_translator.h
+++ b/chrome/browser/sync/engine/net/url_translator.h
@@ -7,6 +7,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_NET_URL_TRANSLATOR_H_
 #define CHROME_BROWSER_SYNC_ENGINE_NET_URL_TRANSLATOR_H_
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/engine/post_commit_message_command.h b/chrome/browser/sync/engine/post_commit_message_command.h
index 4f49894..d052267 100644
--- a/chrome/browser/sync/engine/post_commit_message_command.h
+++ b/chrome/browser/sync/engine/post_commit_message_command.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_POST_COMMIT_MESSAGE_COMMAND_H_
 #define CHROME_BROWSER_SYNC_ENGINE_POST_COMMIT_MESSAGE_COMMAND_H_
+#pragma once
 
 #include "chrome/browser/sync/engine/syncer_command.h"
 #include "chrome/browser/sync/util/sync_types.h"
diff --git a/chrome/browser/sync/engine/process_commit_response_command.h b/chrome/browser/sync/engine/process_commit_response_command.h
index 96253d8..bbc85bf 100644
--- a/chrome/browser/sync/engine/process_commit_response_command.h
+++ b/chrome/browser/sync/engine/process_commit_response_command.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_PROCESS_COMMIT_RESPONSE_COMMAND_H_
 #define CHROME_BROWSER_SYNC_ENGINE_PROCESS_COMMIT_RESPONSE_COMMAND_H_
+#pragma once
 
 #include <set>
 
diff --git a/chrome/browser/sync/engine/process_updates_command.h b/chrome/browser/sync/engine/process_updates_command.h
index 2bcd668..f9ff968 100644
--- a/chrome/browser/sync/engine/process_updates_command.h
+++ b/chrome/browser/sync/engine/process_updates_command.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_PROCESS_UPDATES_COMMAND_H_
 #define CHROME_BROWSER_SYNC_ENGINE_PROCESS_UPDATES_COMMAND_H_
+#pragma once
 
 #include "chrome/browser/sync/engine/model_changing_syncer_command.h"
 #include "chrome/browser/sync/engine/syncer_types.h"
diff --git a/chrome/browser/sync/engine/resolve_conflicts_command.h b/chrome/browser/sync/engine/resolve_conflicts_command.h
index 3ac3207..7bdb734 100644
--- a/chrome/browser/sync/engine/resolve_conflicts_command.h
+++ b/chrome/browser/sync/engine/resolve_conflicts_command.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_RESOLVE_CONFLICTS_COMMAND_H_
 #define CHROME_BROWSER_SYNC_ENGINE_RESOLVE_CONFLICTS_COMMAND_H_
+#pragma once
 
 #include "base/basictypes.h"
 #include "chrome/browser/sync/engine/model_changing_syncer_command.h"
diff --git a/chrome/browser/sync/engine/store_timestamps_command.h b/chrome/browser/sync/engine/store_timestamps_command.h
index 7d0e47f..ca8751a 100644
--- a/chrome/browser/sync/engine/store_timestamps_command.h
+++ b/chrome/browser/sync/engine/store_timestamps_command.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_STORE_TIMESTAMPS_COMMAND_H_
 #define CHROME_BROWSER_SYNC_ENGINE_STORE_TIMESTAMPS_COMMAND_H_
+#pragma once
 
 #include "chrome/browser/sync/engine/syncer_command.h"
 #include "chrome/browser/sync/engine/syncer_types.h"
diff --git a/chrome/browser/sync/engine/syncapi.h b/chrome/browser/sync/engine/syncapi.h
index 4ea5ebd..6587207 100644
--- a/chrome/browser/sync/engine/syncapi.h
+++ b/chrome/browser/sync/engine/syncapi.h
@@ -37,6 +37,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_SYNCAPI_H_
 #define CHROME_BROWSER_SYNC_ENGINE_SYNCAPI_H_
+#pragma once
 
 #include <string>
 #include <vector>
diff --git a/chrome/browser/sync/engine/syncer.h b/chrome/browser/sync/engine/syncer.h
index 5ad6ded..236a872 100644
--- a/chrome/browser/sync/engine/syncer.h
+++ b/chrome/browser/sync/engine/syncer.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_SYNCER_H_
 #define CHROME_BROWSER_SYNC_ENGINE_SYNCER_H_
+#pragma once
 
 #include <string>
 #include <utility>
diff --git a/chrome/browser/sync/engine/syncer_command.h b/chrome/browser/sync/engine/syncer_command.h
index 5c38788..2aad653 100644
--- a/chrome/browser/sync/engine/syncer_command.h
+++ b/chrome/browser/sync/engine/syncer_command.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_SYNCER_COMMAND_H_
 #define CHROME_BROWSER_SYNC_ENGINE_SYNCER_COMMAND_H_
+#pragma once
 
 #include "base/basictypes.h"
 
diff --git a/chrome/browser/sync/engine/syncer_end_command.h b/chrome/browser/sync/engine/syncer_end_command.h
index e26db5f..c4fbd85 100644
--- a/chrome/browser/sync/engine/syncer_end_command.h
+++ b/chrome/browser/sync/engine/syncer_end_command.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_SYNCER_END_COMMAND_H_
 #define CHROME_BROWSER_SYNC_ENGINE_SYNCER_END_COMMAND_H_
+#pragma once
 
 #include "base/basictypes.h"
 #include "chrome/browser/sync/engine/syncer_command.h"
diff --git a/chrome/browser/sync/engine/syncer_proto_util.h b/chrome/browser/sync/engine/syncer_proto_util.h
index ae668ed..ac3d014 100644
--- a/chrome/browser/sync/engine/syncer_proto_util.h
+++ b/chrome/browser/sync/engine/syncer_proto_util.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_SYNCER_PROTO_UTIL_H_
 #define CHROME_BROWSER_SYNC_ENGINE_SYNCER_PROTO_UTIL_H_
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/engine/syncer_thread.h b/chrome/browser/sync/engine/syncer_thread.h
index a54ff7f..b8c8f91 100644
--- a/chrome/browser/sync/engine/syncer_thread.h
+++ b/chrome/browser/sync/engine/syncer_thread.h
@@ -7,6 +7,7 @@
 // does not support a timeout, but is greatly simplified.
 #ifndef CHROME_BROWSER_SYNC_ENGINE_SYNCER_THREAD_H_
 #define CHROME_BROWSER_SYNC_ENGINE_SYNCER_THREAD_H_
+#pragma once
 
 #include <list>
 #include <map>
diff --git a/chrome/browser/sync/engine/syncer_types.h b/chrome/browser/sync/engine/syncer_types.h
index 734f823..3cdce9f 100644
--- a/chrome/browser/sync/engine/syncer_types.h
+++ b/chrome/browser/sync/engine/syncer_types.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_SYNCER_TYPES_H_
 #define CHROME_BROWSER_SYNC_ENGINE_SYNCER_TYPES_H_
+#pragma once
 
 #include <map>
 #include <vector>
diff --git a/chrome/browser/sync/engine/syncer_util.h b/chrome/browser/sync/engine/syncer_util.h
index 3ce5c1b..0282da0 100644
--- a/chrome/browser/sync/engine/syncer_util.h
+++ b/chrome/browser/sync/engine/syncer_util.h
@@ -7,6 +7,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_SYNCER_UTIL_H_
 #define CHROME_BROWSER_SYNC_ENGINE_SYNCER_UTIL_H_
+#pragma once
 
 #include <set>
 #include <string>
diff --git a/chrome/browser/sync/engine/syncproto.h b/chrome/browser/sync/engine/syncproto.h
index b8f0a75..4bd4596 100644
--- a/chrome/browser/sync/engine/syncproto.h
+++ b/chrome/browser/sync/engine/syncproto.h
@@ -6,6 +6,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_SYNCPROTO_H_
 #define CHROME_BROWSER_SYNC_ENGINE_SYNCPROTO_H_
+#pragma once
 
 #include "chrome/browser/sync/protocol/bookmark_specifics.pb.h"
 #include "chrome/browser/sync/protocol/password_specifics.pb.h"
diff --git a/chrome/browser/sync/engine/update_applicator.h b/chrome/browser/sync/engine/update_applicator.h
index eb8b97c..f1e5661 100644
--- a/chrome/browser/sync/engine/update_applicator.h
+++ b/chrome/browser/sync/engine/update_applicator.h
@@ -10,6 +10,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_UPDATE_APPLICATOR_H_
 #define CHROME_BROWSER_SYNC_ENGINE_UPDATE_APPLICATOR_H_
+#pragma once
 
 #include <set>
 #include <vector>
diff --git a/chrome/browser/sync/engine/verify_updates_command.h b/chrome/browser/sync/engine/verify_updates_command.h
index 53c79e1..fe87a3d 100644
--- a/chrome/browser/sync/engine/verify_updates_command.h
+++ b/chrome/browser/sync/engine/verify_updates_command.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_ENGINE_VERIFY_UPDATES_COMMAND_H_
 #define CHROME_BROWSER_SYNC_ENGINE_VERIFY_UPDATES_COMMAND_H_
+#pragma once
 
 #include "base/basictypes.h"
 
diff --git a/chrome/browser/sync/glue/autofill_change_processor.h b/chrome/browser/sync/glue/autofill_change_processor.h
index b71e535..0d149a5 100644
--- a/chrome/browser/sync/glue/autofill_change_processor.h
+++ b/chrome/browser/sync/glue/autofill_change_processor.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_AUTOFILL_CHANGE_PROCESSOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_AUTOFILL_CHANGE_PROCESSOR_H_
+#pragma once
 
 #include "base/scoped_ptr.h"
 #include "chrome/browser/autofill/autofill_profile.h"
diff --git a/chrome/browser/sync/glue/autofill_data_type_controller.h b/chrome/browser/sync/glue/autofill_data_type_controller.h
index b21332c..3ed23d9 100644
--- a/chrome/browser/sync/glue/autofill_data_type_controller.h
+++ b/chrome/browser/sync/glue/autofill_data_type_controller.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_AUTOFILL_DATA_TYPE_CONTROLLER_H__
 #define CHROME_BROWSER_SYNC_GLUE_AUTOFILL_DATA_TYPE_CONTROLLER_H__
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/glue/autofill_model_associator.h b/chrome/browser/sync/glue/autofill_model_associator.h
index 7814273..37ff749 100644
--- a/chrome/browser/sync/glue/autofill_model_associator.h
+++ b/chrome/browser/sync/glue/autofill_model_associator.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_AUTOFILL_MODEL_ASSOCIATOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_AUTOFILL_MODEL_ASSOCIATOR_H_
+#pragma once
 
 #include <map>
 #include <set>
diff --git a/chrome/browser/sync/glue/bookmark_change_processor.h b/chrome/browser/sync/glue/bookmark_change_processor.h
index 5e26dac..9ea314b 100644
--- a/chrome/browser/sync/glue/bookmark_change_processor.h
+++ b/chrome/browser/sync/glue/bookmark_change_processor.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_BOOKMARK_CHANGE_PROCESSOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_BOOKMARK_CHANGE_PROCESSOR_H_
+#pragma once
 
 #include <vector>
 
diff --git a/chrome/browser/sync/glue/bookmark_data_type_controller.h b/chrome/browser/sync/glue/bookmark_data_type_controller.h
index 7a43c73..41068c8 100644
--- a/chrome/browser/sync/glue/bookmark_data_type_controller.h
+++ b/chrome/browser/sync/glue/bookmark_data_type_controller.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_BOOKMARK_DATA_TYPE_CONTROLLER_H__
 #define CHROME_BROWSER_SYNC_GLUE_BOOKMARK_DATA_TYPE_CONTROLLER_H__
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/glue/bookmark_model_associator.h b/chrome/browser/sync/glue/bookmark_model_associator.h
index 5c725cc..8dce287 100644
--- a/chrome/browser/sync/glue/bookmark_model_associator.h
+++ b/chrome/browser/sync/glue/bookmark_model_associator.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_BOOKMARK_MODEL_ASSOCIATOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_BOOKMARK_MODEL_ASSOCIATOR_H_
+#pragma once
 
 #include <map>
 #include <set>
diff --git a/chrome/browser/sync/glue/change_processor.h b/chrome/browser/sync/glue/change_processor.h
index 7e020e6..eb10f3e 100644
--- a/chrome/browser/sync/glue/change_processor.h
+++ b/chrome/browser/sync/glue/change_processor.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_CHANGE_PROCESSOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_CHANGE_PROCESSOR_H_
+#pragma once
 
 #include "chrome/browser/sync/engine/syncapi.h"
 #include "chrome/browser/sync/glue/sync_backend_host.h"
diff --git a/chrome/browser/sync/glue/change_processor_mock.h b/chrome/browser/sync/glue/change_processor_mock.h
index 2860c4b..bec13696 100644
--- a/chrome/browser/sync/glue/change_processor_mock.h
+++ b/chrome/browser/sync/glue/change_processor_mock.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_CHANGE_PROCESSOR_MOCK_H__
 #define CHROME_BROWSER_SYNC_GLUE_CHANGE_PROCESSOR_MOCK_H__
+#pragma once
 
 #include "chrome/browser/profile.h"
 #include "chrome/browser/sync/engine/syncapi.h"
diff --git a/chrome/browser/sync/glue/data_type_controller.h b/chrome/browser/sync/glue/data_type_controller.h
index baece97..d786ddc 100644
--- a/chrome/browser/sync/glue/data_type_controller.h
+++ b/chrome/browser/sync/glue/data_type_controller.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_DATA_TYPE_CONTROLLER_H__
 #define CHROME_BROWSER_SYNC_GLUE_DATA_TYPE_CONTROLLER_H__
+#pragma once
 
 #include <map>
 
diff --git a/chrome/browser/sync/glue/data_type_controller_mock.h b/chrome/browser/sync/glue/data_type_controller_mock.h
index e9d1be6..09ec652 100644
--- a/chrome/browser/sync/glue/data_type_controller_mock.h
+++ b/chrome/browser/sync/glue/data_type_controller_mock.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_DATA_TYPE_CONTROLLER_MOCK_H__
 #define CHROME_BROWSER_SYNC_GLUE_DATA_TYPE_CONTROLLER_MOCK_H__
+#pragma once
 
 #include "chrome/browser/sync/glue/data_type_controller.h"
 #include "testing/gmock/include/gmock/gmock.h"
diff --git a/chrome/browser/sync/glue/data_type_manager.h b/chrome/browser/sync/glue/data_type_manager.h
index 0a0b1f1..24049f2 100644
--- a/chrome/browser/sync/glue/data_type_manager.h
+++ b/chrome/browser/sync/glue/data_type_manager.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_DATA_TYPE_MANAGER_H__
 #define CHROME_BROWSER_SYNC_GLUE_DATA_TYPE_MANAGER_H__
+#pragma once
 
 #include <set>
 
diff --git a/chrome/browser/sync/glue/data_type_manager_impl.h b/chrome/browser/sync/glue/data_type_manager_impl.h
index fd054f2..dc61489 100644
--- a/chrome/browser/sync/glue/data_type_manager_impl.h
+++ b/chrome/browser/sync/glue/data_type_manager_impl.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_DATA_TYPE_MANAGER_IMPL_H__
 #define CHROME_BROWSER_SYNC_GLUE_DATA_TYPE_MANAGER_IMPL_H__
+#pragma once
 
 #include "chrome/browser/sync/glue/data_type_manager.h"
 
diff --git a/chrome/browser/sync/glue/data_type_manager_mock.h b/chrome/browser/sync/glue/data_type_manager_mock.h
index 1d97dac..ce61e27 100644
--- a/chrome/browser/sync/glue/data_type_manager_mock.h
+++ b/chrome/browser/sync/glue/data_type_manager_mock.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_DATA_TYPE_MANAGER_MOCK_H__
 #define CHROME_BROWSER_SYNC_GLUE_DATA_TYPE_MANAGER_MOCK_H__
+#pragma once
 
 #include "chrome/browser/sync/glue/data_type_manager.h"
 #include "chrome/browser/sync/profile_sync_test_util.h"
diff --git a/chrome/browser/sync/glue/database_model_worker.h b/chrome/browser/sync/glue/database_model_worker.h
index 1f4092d..cd19620 100644
--- a/chrome/browser/sync/glue/database_model_worker.h
+++ b/chrome/browser/sync/glue/database_model_worker.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_DATABASE_MODEL_WORKER_H_
 #define CHROME_BROWSER_SYNC_GLUE_DATABASE_MODEL_WORKER_H_
+#pragma once
 
 #include "base/callback.h"
 #include "base/ref_counted.h"
diff --git a/chrome/browser/sync/glue/extension_change_processor.h b/chrome/browser/sync/glue/extension_change_processor.h
index 7a10f9d..43c6a8f 100644
--- a/chrome/browser/sync/glue/extension_change_processor.h
+++ b/chrome/browser/sync/glue/extension_change_processor.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_EXTENSION_CHANGE_PROCESSOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_EXTENSION_CHANGE_PROCESSOR_H_
+#pragma once
 
 #include "base/basictypes.h"
 #include "chrome/browser/sync/engine/syncapi.h"
diff --git a/chrome/browser/sync/glue/extension_data.h b/chrome/browser/sync/glue/extension_data.h
index f67a48f..67951b9 100644
--- a/chrome/browser/sync/glue/extension_data.h
+++ b/chrome/browser/sync/glue/extension_data.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_EXTENSION_DATA_H_
 #define CHROME_BROWSER_SYNC_GLUE_EXTENSION_DATA_H_
+#pragma once
 
 // ExtensionData is the class used to manage the client and server
 // versions of the data for a particular extension.
diff --git a/chrome/browser/sync/glue/extension_data_type_controller.h b/chrome/browser/sync/glue/extension_data_type_controller.h
index c364ac2..61f1d78 100644
--- a/chrome/browser/sync/glue/extension_data_type_controller.h
+++ b/chrome/browser/sync/glue/extension_data_type_controller.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_EXTENSION_DATA_TYPE_CONTROLLER_H_
 #define CHROME_BROWSER_SYNC_GLUE_EXTENSION_DATA_TYPE_CONTROLLER_H_
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/glue/extension_model_associator.h b/chrome/browser/sync/glue/extension_model_associator.h
index a9c9d65..86102d2 100644
--- a/chrome/browser/sync/glue/extension_model_associator.h
+++ b/chrome/browser/sync/glue/extension_model_associator.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_EXTENSION_MODEL_ASSOCIATOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_EXTENSION_MODEL_ASSOCIATOR_H_
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/glue/extension_util.h b/chrome/browser/sync/glue/extension_util.h
index 0eef52f..7df1709 100644
--- a/chrome/browser/sync/glue/extension_util.h
+++ b/chrome/browser/sync/glue/extension_util.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_EXTENSION_UTIL_H_
 #define CHROME_BROWSER_SYNC_GLUE_EXTENSION_UTIL_H_
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/glue/history_model_worker.h b/chrome/browser/sync/glue/history_model_worker.h
index 2882d5a..baac2b3 100644
--- a/chrome/browser/sync/glue/history_model_worker.h
+++ b/chrome/browser/sync/glue/history_model_worker.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_HISTORY_MODEL_WORKER_H_
 #define CHROME_BROWSER_SYNC_GLUE_HISTORY_MODEL_WORKER_H_
+#pragma once
 
 #include "chrome/browser/sync/engine/model_safe_worker.h"
 
diff --git a/chrome/browser/sync/glue/http_bridge.h b/chrome/browser/sync/glue/http_bridge.h
index 548f5d3..1951ce5 100644
--- a/chrome/browser/sync/glue/http_bridge.h
+++ b/chrome/browser/sync/glue/http_bridge.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_HTTP_BRIDGE_H_
 #define CHROME_BROWSER_SYNC_GLUE_HTTP_BRIDGE_H_
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/glue/model_associator.h b/chrome/browser/sync/glue/model_associator.h
index 3c12659..e9f89b3 100644
--- a/chrome/browser/sync/glue/model_associator.h
+++ b/chrome/browser/sync/glue/model_associator.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_MODEL_ASSOCIATOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_MODEL_ASSOCIATOR_H_
+#pragma once
 
 #include <map>
 #include <string>
diff --git a/chrome/browser/sync/glue/model_associator_mock.h b/chrome/browser/sync/glue/model_associator_mock.h
index 766f01b..219a204 100644
--- a/chrome/browser/sync/glue/model_associator_mock.h
+++ b/chrome/browser/sync/glue/model_associator_mock.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_MODEL_ASSOCIATOR_MOCK_H__
 #define CHROME_BROWSER_SYNC_GLUE_MODEL_ASSOCIATOR_MOCK_H__
+#pragma once
 
 #include "chrome/browser/sync/glue/model_associator.h"
 #include "testing/gmock/include/gmock/gmock.h"
diff --git a/chrome/browser/sync/glue/password_change_processor.h b/chrome/browser/sync/glue/password_change_processor.h
index 6ca3dbb..317c2de 100644
--- a/chrome/browser/sync/glue/password_change_processor.h
+++ b/chrome/browser/sync/glue/password_change_processor.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_PASSWORD_CHANGE_PROCESSOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_PASSWORD_CHANGE_PROCESSOR_H_
+#pragma once
 
 #include "chrome/browser/sync/glue/change_processor.h"
 
diff --git a/chrome/browser/sync/glue/password_data_type_controller.h b/chrome/browser/sync/glue/password_data_type_controller.h
index f114dcd..f619b85 100644
--- a/chrome/browser/sync/glue/password_data_type_controller.h
+++ b/chrome/browser/sync/glue/password_data_type_controller.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_PASSWORD_DATA_TYPE_CONTROLLER_H__
 #define CHROME_BROWSER_SYNC_GLUE_PASSWORD_DATA_TYPE_CONTROLLER_H__
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/glue/password_model_associator.h b/chrome/browser/sync/glue/password_model_associator.h
index bfcd105..e1f0438 100644
--- a/chrome/browser/sync/glue/password_model_associator.h
+++ b/chrome/browser/sync/glue/password_model_associator.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_PASSWORD_MODEL_ASSOCIATOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_PASSWORD_MODEL_ASSOCIATOR_H_
+#pragma once
 
 #include <map>
 #include <set>
diff --git a/chrome/browser/sync/glue/password_model_worker.h b/chrome/browser/sync/glue/password_model_worker.h
index 31637cd..cd55c79 100644
--- a/chrome/browser/sync/glue/password_model_worker.h
+++ b/chrome/browser/sync/glue/password_model_worker.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_PASSWORD_MODEL_WORKER_H_
 #define CHROME_BROWSER_SYNC_GLUE_PASSWORD_MODEL_WORKER_H_
+#pragma once
 
 #include "chrome/browser/sync/engine/model_safe_worker.h"
 
diff --git a/chrome/browser/sync/glue/preference_change_processor.h b/chrome/browser/sync/glue/preference_change_processor.h
index b604c96..df23227 100644
--- a/chrome/browser/sync/glue/preference_change_processor.h
+++ b/chrome/browser/sync/glue/preference_change_processor.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_PREFERENCE_CHANGE_PROCESSOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_PREFERENCE_CHANGE_PROCESSOR_H_
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/glue/preference_data_type_controller.h b/chrome/browser/sync/glue/preference_data_type_controller.h
index d38bf36..bc2b93d 100644
--- a/chrome/browser/sync/glue/preference_data_type_controller.h
+++ b/chrome/browser/sync/glue/preference_data_type_controller.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_PREFERENCE_DATA_TYPE_CONTROLLER_H__
 #define CHROME_BROWSER_SYNC_GLUE_PREFERENCE_DATA_TYPE_CONTROLLER_H__
+#pragma once
 
 #include "base/basictypes.h"
 #include "base/scoped_ptr.h"
diff --git a/chrome/browser/sync/glue/preference_model_associator.h b/chrome/browser/sync/glue/preference_model_associator.h
index e37a533..ca170ac 100644
--- a/chrome/browser/sync/glue/preference_model_associator.h
+++ b/chrome/browser/sync/glue/preference_model_associator.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_PREFERENCE_MODEL_ASSOCIATOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_PREFERENCE_MODEL_ASSOCIATOR_H_
+#pragma once
 
 #include <map>
 #include <set>
diff --git a/chrome/browser/sync/glue/sync_backend_host.h b/chrome/browser/sync/glue/sync_backend_host.h
index 4b4ce1d..ec5c0fc 100644
--- a/chrome/browser/sync/glue/sync_backend_host.h
+++ b/chrome/browser/sync/glue/sync_backend_host.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_SYNC_BACKEND_HOST_H_
 #define CHROME_BROWSER_SYNC_GLUE_SYNC_BACKEND_HOST_H_
+#pragma once
 
 #include <map>
 #include <set>
diff --git a/chrome/browser/sync/glue/sync_backend_host_mock.h b/chrome/browser/sync/glue/sync_backend_host_mock.h
index 3b2e3b3..4035f97 100644
--- a/chrome/browser/sync/glue/sync_backend_host_mock.h
+++ b/chrome/browser/sync/glue/sync_backend_host_mock.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_SYNC_BACKEND_HOST_MOCK_H__
 #define CHROME_BROWSER_SYNC_GLUE_SYNC_BACKEND_HOST_MOCK_H__
+#pragma once
 
 #include <set>
 
diff --git a/chrome/browser/sync/glue/synchronized_preferences.h b/chrome/browser/sync/glue/synchronized_preferences.h
index 3d25956..70ae878 100644
--- a/chrome/browser/sync/glue/synchronized_preferences.h
+++ b/chrome/browser/sync/glue/synchronized_preferences.h
@@ -7,6 +7,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_SYNCHRONIZED_PREFERENCES_H_
 #define CHROME_BROWSER_SYNC_GLUE_SYNCHRONIZED_PREFERENCES_H_
+#pragma once
 
 #include "chrome/browser/translate/translate_prefs.h"
 #include "chrome/common/pref_names.h"
diff --git a/chrome/browser/sync/glue/theme_change_processor.h b/chrome/browser/sync/glue/theme_change_processor.h
index c9bf753..a694c0b 100644
--- a/chrome/browser/sync/glue/theme_change_processor.h
+++ b/chrome/browser/sync/glue/theme_change_processor.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_THEME_CHANGE_PROCESSOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_THEME_CHANGE_PROCESSOR_H_
+#pragma once
 
 #include "base/basictypes.h"
 #include "chrome/browser/sync/engine/syncapi.h"
diff --git a/chrome/browser/sync/glue/theme_data_type_controller.h b/chrome/browser/sync/glue/theme_data_type_controller.h
index a808290..2951a2d 100644
--- a/chrome/browser/sync/glue/theme_data_type_controller.h
+++ b/chrome/browser/sync/glue/theme_data_type_controller.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_THEME_DATA_TYPE_CONTROLLER_H_
 #define CHROME_BROWSER_SYNC_GLUE_THEME_DATA_TYPE_CONTROLLER_H_
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/glue/theme_model_associator.h b/chrome/browser/sync/glue/theme_model_associator.h
index 54603cb..8e17724 100644
--- a/chrome/browser/sync/glue/theme_model_associator.h
+++ b/chrome/browser/sync/glue/theme_model_associator.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_THEME_MODEL_ASSOCIATOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_THEME_MODEL_ASSOCIATOR_H_
+#pragma once
 
 #include "base/basictypes.h"
 #include "chrome/browser/sync/glue/model_associator.h"
diff --git a/chrome/browser/sync/glue/theme_util.h b/chrome/browser/sync/glue/theme_util.h
index 1cc6f39..988b39d 100644
--- a/chrome/browser/sync/glue/theme_util.h
+++ b/chrome/browser/sync/glue/theme_util.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_THEME_UTIL_H_
 #define CHROME_BROWSER_SYNC_GLUE_THEME_UTIL_H_
+#pragma once
 
 class Extension;
 class Profile;
diff --git a/chrome/browser/sync/glue/typed_url_change_processor.h b/chrome/browser/sync/glue/typed_url_change_processor.h
index 7fb9eb6..e36b6e4 100644
--- a/chrome/browser/sync/glue/typed_url_change_processor.h
+++ b/chrome/browser/sync/glue/typed_url_change_processor.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_TYPED_URL_CHANGE_PROCESSOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_TYPED_URL_CHANGE_PROCESSOR_H_
+#pragma once
 
 #include "chrome/browser/sync/glue/change_processor.h"
 
diff --git a/chrome/browser/sync/glue/typed_url_data_type_controller.h b/chrome/browser/sync/glue/typed_url_data_type_controller.h
index e8b3a31..f24a25a 100644
--- a/chrome/browser/sync/glue/typed_url_data_type_controller.h
+++ b/chrome/browser/sync/glue/typed_url_data_type_controller.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_TYPED_URL_DATA_TYPE_CONTROLLER_H__
 #define CHROME_BROWSER_SYNC_GLUE_TYPED_URL_DATA_TYPE_CONTROLLER_H__
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/glue/typed_url_model_associator.h b/chrome/browser/sync/glue/typed_url_model_associator.h
index dcaed25..c5891e1 100644
--- a/chrome/browser/sync/glue/typed_url_model_associator.h
+++ b/chrome/browser/sync/glue/typed_url_model_associator.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_TYPED_URL_MODEL_ASSOCIATOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_TYPED_URL_MODEL_ASSOCIATOR_H_
+#pragma once
 
 #include <map>
 #include <set>
diff --git a/chrome/browser/sync/glue/ui_model_worker.h b/chrome/browser/sync/glue/ui_model_worker.h
index 50d4576..208988d 100644
--- a/chrome/browser/sync/glue/ui_model_worker.h
+++ b/chrome/browser/sync/glue/ui_model_worker.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_UI_MODEL_WORKER_H_
 #define CHROME_BROWSER_SYNC_GLUE_UI_MODEL_WORKER_H_
+#pragma once
 
 #include "base/callback.h"
 #include "base/condition_variable.h"
diff --git a/chrome/browser/sync/notification_method.h b/chrome/browser/sync/notification_method.h
index 4e1bcd1..416dbe9 100644
--- a/chrome/browser/sync/notification_method.h
+++ b/chrome/browser/sync/notification_method.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_NOTIFICATION_METHOD_H_
 #define CHROME_BROWSER_SYNC_NOTIFICATION_METHOD_H_
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/notifier/cache_invalidation_packet_handler.h b/chrome/browser/sync/notifier/cache_invalidation_packet_handler.h
index 0f5feaa..e3e89f2 100644
--- a/chrome/browser/sync/notifier/cache_invalidation_packet_handler.h
+++ b/chrome/browser/sync/notifier/cache_invalidation_packet_handler.h
@@ -7,6 +7,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_NOTIFIER_CACHE_INVALIDATION_PACKET_HANDLER_H_
 #define CHROME_BROWSER_SYNC_NOTIFIER_CACHE_INVALIDATION_PACKET_HANDLER_H_
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/notifier/chrome_invalidation_client.h b/chrome/browser/sync/notifier/chrome_invalidation_client.h
index 6b4f6cfe..8a33fa2 100644
--- a/chrome/browser/sync/notifier/chrome_invalidation_client.h
+++ b/chrome/browser/sync/notifier/chrome_invalidation_client.h
@@ -7,6 +7,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_NOTIFIER_CHROME_INVALIDATION_CLIENT_H_
 #define CHROME_BROWSER_SYNC_NOTIFIER_CHROME_INVALIDATION_CLIENT_H_
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/notifier/chrome_system_resources.h b/chrome/browser/sync/notifier/chrome_system_resources.h
index 14d69d9..1305c7c 100644
--- a/chrome/browser/sync/notifier/chrome_system_resources.h
+++ b/chrome/browser/sync/notifier/chrome_system_resources.h
@@ -8,6 +8,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_NOTIFIER_CHROME_SYSTEM_RESOURCES_H_
 #define CHROME_BROWSER_SYNC_NOTIFIER_CHROME_SYSTEM_RESOURCES_H_
+#pragma once
 
 #include <set>
 
diff --git a/chrome/browser/sync/notifier/invalidation_util.h b/chrome/browser/sync/notifier/invalidation_util.h
index 92e6a6e..75a9f6b 100644
--- a/chrome/browser/sync/notifier/invalidation_util.h
+++ b/chrome/browser/sync/notifier/invalidation_util.h
@@ -6,6 +6,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_NOTIFIER_INVALIDATION_UTIL_H_
 #define CHROME_BROWSER_SYNC_NOTIFIER_INVALIDATION_UTIL_H_
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/notifier/registration_manager.h b/chrome/browser/sync/notifier/registration_manager.h
index 52f299be..06acc89 100644
--- a/chrome/browser/sync/notifier/registration_manager.h
+++ b/chrome/browser/sync/notifier/registration_manager.h
@@ -7,6 +7,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_NOTIFIER_REGISTRATION_MANAGER_H_
 #define CHROME_BROWSER_SYNC_NOTIFIER_REGISTRATION_MANAGER_H_
+#pragma once
 
 #include <map>
 
diff --git a/chrome/browser/sync/notifier/server_notifier_thread.h b/chrome/browser/sync/notifier/server_notifier_thread.h
index b3990a7..4e64594 100644
--- a/chrome/browser/sync/notifier/server_notifier_thread.h
+++ b/chrome/browser/sync/notifier/server_notifier_thread.h
@@ -11,6 +11,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_NOTIFIER_SERVER_NOTIFIER_THREAD_H_
 #define CHROME_BROWSER_SYNC_NOTIFIER_SERVER_NOTIFIER_THREAD_H_
+#pragma once
 
 #include <string>
 #include <vector>
diff --git a/chrome/browser/sync/profile_sync_factory.h b/chrome/browser/sync/profile_sync_factory.h
index f8b16e7..1877bc9 100644
--- a/chrome/browser/sync/profile_sync_factory.h
+++ b/chrome/browser/sync/profile_sync_factory.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_PROFILE_SYNC_FACTORY_H__
 #define CHROME_BROWSER_SYNC_PROFILE_SYNC_FACTORY_H__
+#pragma once
 
 #include <utility>
 #include "base/task.h"
diff --git a/chrome/browser/sync/profile_sync_factory_impl.h b/chrome/browser/sync/profile_sync_factory_impl.h
index 31c0dea..f9e8c15 100644
--- a/chrome/browser/sync/profile_sync_factory_impl.h
+++ b/chrome/browser/sync/profile_sync_factory_impl.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_PROFILE_SYNC_FACTORY_IMPL_H__
 #define CHROME_BROWSER_SYNC_PROFILE_SYNC_FACTORY_IMPL_H__
+#pragma once
 
 #include "base/basictypes.h"
 #include "chrome/browser/sync/profile_sync_factory.h"
diff --git a/chrome/browser/sync/profile_sync_factory_mock.h b/chrome/browser/sync/profile_sync_factory_mock.h
index a323b34..d7531dc 100644
--- a/chrome/browser/sync/profile_sync_factory_mock.h
+++ b/chrome/browser/sync/profile_sync_factory_mock.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_PROFILE_SYNC_FACTORY_MOCK_H__
 #define CHROME_BROWSER_SYNC_PROFILE_SYNC_FACTORY_MOCK_H__
+#pragma once
 
 #include "base/scoped_ptr.h"
 #include "chrome/browser/sync/profile_sync_service.h"
diff --git a/chrome/browser/sync/profile_sync_service.h b/chrome/browser/sync/profile_sync_service.h
index 7acb034..c3cdf91 100644
--- a/chrome/browser/sync/profile_sync_service.h
+++ b/chrome/browser/sync/profile_sync_service.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_
 #define CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_
+#pragma once
 
 #include <string>
 #include <map>
diff --git a/chrome/browser/sync/profile_sync_service_mock.h b/chrome/browser/sync/profile_sync_service_mock.h
index ae9832f..1b36c63 100644
--- a/chrome/browser/sync/profile_sync_service_mock.h
+++ b/chrome/browser/sync/profile_sync_service_mock.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_MOCK_H_
 #define CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_MOCK_H_
+#pragma once
 
 #include <string>
 #include "base/string16.h"
diff --git a/chrome/browser/sync/profile_sync_service_observer.h b/chrome/browser/sync/profile_sync_service_observer.h
index 2bd967c..5a9c0ca 100644
--- a/chrome/browser/sync/profile_sync_service_observer.h
+++ b/chrome/browser/sync/profile_sync_service_observer.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_OBSERVER_H_
 #define CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_OBSERVER_H_
+#pragma once
 
 // Various UI components such as the New Tab page can be driven by observing
 // the ProfileSyncService through this interface.
diff --git a/chrome/browser/sync/profile_sync_test_util.h b/chrome/browser/sync/profile_sync_test_util.h
index 838c381..9428235 100644
--- a/chrome/browser/sync/profile_sync_test_util.h
+++ b/chrome/browser/sync/profile_sync_test_util.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_PROFILE_SYNC_TEST_UTIL_H_
 #define CHROME_BROWSER_SYNC_PROFILE_SYNC_TEST_UTIL_H_
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/protocol/service_constants.h b/chrome/browser/sync/protocol/service_constants.h
index 2aed89d..0541a34 100644
--- a/chrome/browser/sync/protocol/service_constants.h
+++ b/chrome/browser/sync/protocol/service_constants.h
@@ -8,6 +8,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_PROTOCOL_SERVICE_CONSTANTS_H_
 #define CHROME_BROWSER_SYNC_PROTOCOL_SERVICE_CONSTANTS_H_
+#pragma once
 
 // These fixed service names are used to obtain auth cookies for the
 // corresponding services. It might be interesting to make these updateable
diff --git a/chrome/browser/sync/sessions/ordered_commit_set.h b/chrome/browser/sync/sessions/ordered_commit_set.h
index 3252826..50f3e97 100644
--- a/chrome/browser/sync/sessions/ordered_commit_set.h
+++ b/chrome/browser/sync/sessions/ordered_commit_set.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SESSIONS_ORDERED_COMMIT_SET_H_
 #define CHROME_BROWSER_SYNC_SESSIONS_ORDERED_COMMIT_SET_H_
+#pragma once
 
 #include <map>
 #include <set>
diff --git a/chrome/browser/sync/sessions/session_state.h b/chrome/browser/sync/sessions/session_state.h
index 6a2fa67..3f1e721 100644
--- a/chrome/browser/sync/sessions/session_state.h
+++ b/chrome/browser/sync/sessions/session_state.h
@@ -11,6 +11,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SESSIONS_SESSION_STATE_H_
 #define CHROME_BROWSER_SYNC_SESSIONS_SESSION_STATE_H_
+#pragma once
 
 #include <set>
 #include <vector>
diff --git a/chrome/browser/sync/sessions/status_controller.h b/chrome/browser/sync/sessions/status_controller.h
index f1e4a28..f367b50 100644
--- a/chrome/browser/sync/sessions/status_controller.h
+++ b/chrome/browser/sync/sessions/status_controller.h
@@ -31,6 +31,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SESSIONS_STATUS_CONTROLLER_H_
 #define CHROME_BROWSER_SYNC_SESSIONS_STATUS_CONTROLLER_H_
+#pragma once
 
 #include <map>
 
diff --git a/chrome/browser/sync/sessions/sync_session.h b/chrome/browser/sync/sessions/sync_session.h
index dd498fe..f36e75e 100644
--- a/chrome/browser/sync/sessions/sync_session.h
+++ b/chrome/browser/sync/sessions/sync_session.h
@@ -13,6 +13,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SESSIONS_SYNC_SESSION_H_
 #define CHROME_BROWSER_SYNC_SESSIONS_SYNC_SESSION_H_
+#pragma once
 
 #include <string>
 #include <vector>
diff --git a/chrome/browser/sync/sessions/sync_session_context.h b/chrome/browser/sync/sessions/sync_session_context.h
index bc4ea28..65e431a 100644
--- a/chrome/browser/sync/sessions/sync_session_context.h
+++ b/chrome/browser/sync/sessions/sync_session_context.h
@@ -17,6 +17,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SESSIONS_SYNC_SESSION_CONTEXT_H_
 #define CHROME_BROWSER_SYNC_SESSIONS_SYNC_SESSION_CONTEXT_H_
+#pragma once
 
 #include <string>
 #include "chrome/browser/chrome_thread.h"
diff --git a/chrome/browser/sync/sync_constants.h b/chrome/browser/sync/sync_constants.h
index efca382..d395d25 100644
--- a/chrome/browser/sync/sync_constants.h
+++ b/chrome/browser/sync/sync_constants.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SYNC_CONSTANTS_H_
 #define CHROME_BROWSER_SYNC_SYNC_CONSTANTS_H_
+#pragma once
 
 namespace browser_sync {
 
diff --git a/chrome/browser/sync/sync_setup_flow.h b/chrome/browser/sync/sync_setup_flow.h
index c59c91a..e854ce0 100644
--- a/chrome/browser/sync/sync_setup_flow.h
+++ b/chrome/browser/sync/sync_setup_flow.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SYNC_SETUP_FLOW_H_
 #define CHROME_BROWSER_SYNC_SYNC_SETUP_FLOW_H_
+#pragma once
 
 #include <string>
 #include <vector>
diff --git a/chrome/browser/sync/sync_setup_wizard.h b/chrome/browser/sync/sync_setup_wizard.h
index 9bb0bb0..e7d1a82 100644
--- a/chrome/browser/sync/sync_setup_wizard.h
+++ b/chrome/browser/sync/sync_setup_wizard.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SYNC_SETUP_WIZARD_H_
 #define CHROME_BROWSER_SYNC_SYNC_SETUP_WIZARD_H_
+#pragma once
 
 #include "base/basictypes.h"
 #include "gfx/native_widget_types.h"
diff --git a/chrome/browser/sync/sync_ui_util.h b/chrome/browser/sync/sync_ui_util.h
index 0b9483e..ce370af 100644
--- a/chrome/browser/sync/sync_ui_util.h
+++ b/chrome/browser/sync/sync_ui_util.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SYNC_UI_UTIL_H_
 #define CHROME_BROWSER_SYNC_SYNC_UI_UTIL_H_
+#pragma once
 
 #include "base/string16.h"
 #include "chrome/browser/sync/profile_sync_service.h"
diff --git a/chrome/browser/sync/sync_ui_util_mac.h b/chrome/browser/sync/sync_ui_util_mac.h
index 65fba88..3a732b8 100644
--- a/chrome/browser/sync/sync_ui_util_mac.h
+++ b/chrome/browser/sync/sync_ui_util_mac.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SYNC_UI_UTIL_MAC_H_
 #define CHROME_BROWSER_SYNC_SYNC_UI_UTIL_MAC_H_
+#pragma once
 
 #include "chrome/browser/sync/sync_ui_util.h"
 
diff --git a/chrome/browser/sync/syncable/blob.h b/chrome/browser/sync/syncable/blob.h
index bb0665e..54d1d00 100644
--- a/chrome/browser/sync/syncable/blob.h
+++ b/chrome/browser/sync/syncable/blob.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SYNCABLE_BLOB_H_
 #define CHROME_BROWSER_SYNC_SYNCABLE_BLOB_H_
+#pragma once
 
 #include <vector>
 
diff --git a/chrome/browser/sync/syncable/dir_open_result.h b/chrome/browser/sync/syncable/dir_open_result.h
index 0090236..f64c6a6 100644
--- a/chrome/browser/sync/syncable/dir_open_result.h
+++ b/chrome/browser/sync/syncable/dir_open_result.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SYNCABLE_DIR_OPEN_RESULT_H_
 #define CHROME_BROWSER_SYNC_SYNCABLE_DIR_OPEN_RESULT_H_
+#pragma once
 
 namespace syncable {
 enum DirOpenResult { OPENED,   // success.
diff --git a/chrome/browser/sync/syncable/directory_backing_store.h b/chrome/browser/sync/syncable/directory_backing_store.h
index 36322e8..3739b39 100644
--- a/chrome/browser/sync/syncable/directory_backing_store.h
+++ b/chrome/browser/sync/syncable/directory_backing_store.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SYNCABLE_DIRECTORY_BACKING_STORE_H_
 #define CHROME_BROWSER_SYNC_SYNCABLE_DIRECTORY_BACKING_STORE_H_
+#pragma once
 
 #include <set>
 #include <string>
diff --git a/chrome/browser/sync/syncable/directory_event.h b/chrome/browser/sync/syncable/directory_event.h
index fd25c88..3f91679 100644
--- a/chrome/browser/sync/syncable/directory_event.h
+++ b/chrome/browser/sync/syncable/directory_event.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SYNCABLE_DIRECTORY_EVENT_H_
 #define CHROME_BROWSER_SYNC_SYNCABLE_DIRECTORY_EVENT_H_
+#pragma once
 
 namespace syncable {
 
diff --git a/chrome/browser/sync/syncable/directory_manager.h b/chrome/browser/sync/syncable/directory_manager.h
index 103ec30..d5dfea8 100644
--- a/chrome/browser/sync/syncable/directory_manager.h
+++ b/chrome/browser/sync/syncable/directory_manager.h
@@ -11,6 +11,7 @@
 // Directory objects everywhere.
 #ifndef CHROME_BROWSER_SYNC_SYNCABLE_DIRECTORY_MANAGER_H_
 #define CHROME_BROWSER_SYNC_SYNCABLE_DIRECTORY_MANAGER_H_
+#pragma once
 
 #include <string>
 #include <vector>
diff --git a/chrome/browser/sync/syncable/model_type.h b/chrome/browser/sync/syncable/model_type.h
index 5c34fb8..613615e 100644
--- a/chrome/browser/sync/syncable/model_type.h
+++ b/chrome/browser/sync/syncable/model_type.h
@@ -8,6 +8,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SYNCABLE_MODEL_TYPE_H_
 #define CHROME_BROWSER_SYNC_SYNCABLE_MODEL_TYPE_H_
+#pragma once
 
 #include <bitset>
 #include <set>
diff --git a/chrome/browser/sync/syncable/path_name_cmp.h b/chrome/browser/sync/syncable/path_name_cmp.h
index 6c2e138..1da0200 100644
--- a/chrome/browser/sync/syncable/path_name_cmp.h
+++ b/chrome/browser/sync/syncable/path_name_cmp.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SYNCABLE_PATH_NAME_CMP_H_
 #define CHROME_BROWSER_SYNC_SYNCABLE_PATH_NAME_CMP_H_
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/syncable/syncable-inl.h b/chrome/browser/sync/syncable/syncable-inl.h
index 1a34325..79845cf 100644
--- a/chrome/browser/sync/syncable/syncable-inl.h
+++ b/chrome/browser/sync/syncable/syncable-inl.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SYNCABLE_SYNCABLE_INL_H_
 #define CHROME_BROWSER_SYNC_SYNCABLE_SYNCABLE_INL_H_
+#pragma once
 
 #include "chrome/common/sqlite_utils.h"
 
diff --git a/chrome/browser/sync/syncable/syncable.h b/chrome/browser/sync/syncable/syncable.h
index 15b08c3..f227989 100644
--- a/chrome/browser/sync/syncable/syncable.h
+++ b/chrome/browser/sync/syncable/syncable.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SYNCABLE_SYNCABLE_H_
 #define CHROME_BROWSER_SYNC_SYNCABLE_SYNCABLE_H_
+#pragma once
 
 #include <algorithm>
 #include <bitset>
diff --git a/chrome/browser/sync/syncable/syncable_changes_version.h b/chrome/browser/sync/syncable/syncable_changes_version.h
index 26a5eb8..51cd3f8 100644
--- a/chrome/browser/sync/syncable/syncable_changes_version.h
+++ b/chrome/browser/sync/syncable/syncable_changes_version.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SYNCABLE_SYNCABLE_CHANGES_VERSION_H_
 #define CHROME_BROWSER_SYNC_SYNCABLE_SYNCABLE_CHANGES_VERSION_H_
+#pragma once
 
 namespace syncable {
 
diff --git a/chrome/browser/sync/syncable/syncable_columns.h b/chrome/browser/sync/syncable/syncable_columns.h
index 398a00f..94bd0ac 100644
--- a/chrome/browser/sync/syncable/syncable_columns.h
+++ b/chrome/browser/sync/syncable/syncable_columns.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SYNCABLE_SYNCABLE_COLUMNS_H_
 #define CHROME_BROWSER_SYNC_SYNCABLE_SYNCABLE_COLUMNS_H_
+#pragma once
 
 #include "chrome/browser/sync/syncable/syncable.h"
 #include "chrome/browser/sync/syncable/syncable_changes_version.h"
diff --git a/chrome/browser/sync/syncable/syncable_id.h b/chrome/browser/sync/syncable/syncable_id.h
index ed8a2e5..55a44f1 100644
--- a/chrome/browser/sync/syncable/syncable_id.h
+++ b/chrome/browser/sync/syncable/syncable_id.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_SYNCABLE_SYNCABLE_ID_H_
 #define CHROME_BROWSER_SYNC_SYNCABLE_SYNCABLE_ID_H_
+#pragma once
 
 #include <iosfwd>
 #include <limits>
diff --git a/chrome/browser/sync/test_profile_sync_service.h b/chrome/browser/sync/test_profile_sync_service.h
index 700ab4e..ba4a264 100644
--- a/chrome/browser/sync/test_profile_sync_service.h
+++ b/chrome/browser/sync/test_profile_sync_service.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_TEST_PROFILE_SYNC_SERVICE_H_
 #define CHROME_BROWSER_SYNC_TEST_PROFILE_SYNC_SERVICE_H_
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/unrecoverable_error_handler.h b/chrome/browser/sync/unrecoverable_error_handler.h
index d8950e6..c8471ef 100644
--- a/chrome/browser/sync/unrecoverable_error_handler.h
+++ b/chrome/browser/sync/unrecoverable_error_handler.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_UNRECOVERABLE_ERROR_HANDLER_H_
 #define CHROME_BROWSER_SYNC_UNRECOVERABLE_ERROR_HANDLER_H_
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/util/channel.h b/chrome/browser/sync/util/channel.h
index 0b98347..4017d9f 100644
--- a/chrome/browser/sync/util/channel.h
+++ b/chrome/browser/sync/util/channel.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_UTIL_CHANNEL_H_
 #define CHROME_BROWSER_SYNC_UTIL_CHANNEL_H_
+#pragma once
 
 ///////////////////////////////////////////////////////////////////////////////
 //
diff --git a/chrome/browser/sync/util/crypto_helpers.h b/chrome/browser/sync/util/crypto_helpers.h
index 704fed6..14935c1 100644
--- a/chrome/browser/sync/util/crypto_helpers.h
+++ b/chrome/browser/sync/util/crypto_helpers.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_UTIL_CRYPTO_HELPERS_H_
 #define CHROME_BROWSER_SYNC_UTIL_CRYPTO_HELPERS_H_
+#pragma once
 
 #include <string>
 #include <vector>
diff --git a/chrome/browser/sync/util/cryptographer.h b/chrome/browser/sync/util/cryptographer.h
index 0ffa84f..e4e528b 100644
--- a/chrome/browser/sync/util/cryptographer.h
+++ b/chrome/browser/sync/util/cryptographer.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_UTIL_CRYPTOGRAPHER_H_
 #define CHROME_BROWSER_SYNC_UTIL_CRYPTOGRAPHER_H_
+#pragma once
 
 #include <map>
 #include <string>
diff --git a/chrome/browser/sync/util/data_encryption.h b/chrome/browser/sync/util/data_encryption.h
index b62a14a..e36e7a9 100644
--- a/chrome/browser/sync/util/data_encryption.h
+++ b/chrome/browser/sync/util/data_encryption.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_UTIL_DATA_ENCRYPTION_H_
 #define CHROME_BROWSER_SYNC_UTIL_DATA_ENCRYPTION_H_
+#pragma once
 
 #include <string>
 #include <vector>
diff --git a/chrome/browser/sync/util/dbgq.h b/chrome/browser/sync/util/dbgq.h
index 65ebb5c..5b97fac 100644
--- a/chrome/browser/sync/util/dbgq.h
+++ b/chrome/browser/sync/util/dbgq.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_UTIL_DBGQ_H_
 #define CHROME_BROWSER_SYNC_UTIL_DBGQ_H_
+#pragma once
 
 #include "base/basictypes.h"  // for COMPILE_ASSERT
 
diff --git a/chrome/browser/sync/util/extensions_activity_monitor.h b/chrome/browser/sync/util/extensions_activity_monitor.h
index a1e36f2..742c887 100644
--- a/chrome/browser/sync/util/extensions_activity_monitor.h
+++ b/chrome/browser/sync/util/extensions_activity_monitor.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_UTIL_EXTENSIONS_ACTIVITY_MONITOR_H_
 #define CHROME_BROWSER_SYNC_UTIL_EXTENSIONS_ACTIVITY_MONITOR_H_
+#pragma once
 
 #include <map>
 
diff --git a/chrome/browser/sync/util/fast_dump.h b/chrome/browser/sync/util/fast_dump.h
index 9266f0e..a9eff24 100644
--- a/chrome/browser/sync/util/fast_dump.h
+++ b/chrome/browser/sync/util/fast_dump.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_UTIL_FAST_DUMP_H_
 #define CHROME_BROWSER_SYNC_UTIL_FAST_DUMP_H_
+#pragma once
 
 #include <ostream>
 #include <streambuf>
diff --git a/chrome/browser/sync/util/nigori.h b/chrome/browser/sync/util/nigori.h
index 0050c48..4b9b2fa 100644
--- a/chrome/browser/sync/util/nigori.h
+++ b/chrome/browser/sync/util/nigori.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_UTIL_NIGORI_H_
 #define CHROME_BROWSER_SYNC_UTIL_NIGORI_H_
+#pragma once
 
 #include <string>
 
diff --git a/chrome/browser/sync/util/sync_types.h b/chrome/browser/sync/util/sync_types.h
index 14addd0..b2c703c 100644
--- a/chrome/browser/sync/util/sync_types.h
+++ b/chrome/browser/sync/util/sync_types.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_UTIL_SYNC_TYPES_H_
 #define CHROME_BROWSER_SYNC_UTIL_SYNC_TYPES_H_
+#pragma once
 
 #include <iosfwd>
 #include <string>
diff --git a/chrome/browser/sync/util/user_settings.h b/chrome/browser/sync/util/user_settings.h
index 7bfa571..11e95a8 100644
--- a/chrome/browser/sync/util/user_settings.h
+++ b/chrome/browser/sync/util/user_settings.h
@@ -4,6 +4,7 @@
 
 #ifndef CHROME_BROWSER_SYNC_UTIL_USER_SETTINGS_H_
 #define CHROME_BROWSER_SYNC_UTIL_USER_SETTINGS_H_
+#pragma once
 
 #include <map>
 #include <set>