Create profile_sync_test_util in components

There are already such utils in //chrome/browser/sync and the //ios version as
well. This CL starts by pulling out some trivial parts into a common file in
//components. More will follow as ProfileSyncService unittests will get
componentised.

BUG=544972

Review URL: https://codereview.chromium.org/1607473003

Cr-Commit-Position: refs/heads/master@{#370659}

3 files changed, 55 insertions, 0 deletions

diff --git a/components/browser_sync/browser/BUILD.gn b/components/browser_sync/browser/BUILD.gn
index 3ad2405..38ef95f 100644
--- a/components/browser_sync/browser/BUILD.gn
+++ b/components/browser_sync/browser/BUILD.gn
@@ -83,11 +83,14 @@ source_set("test_support") {
   sources = [
     "profile_sync_service_mock.cc",
     "profile_sync_service_mock.h",
+    "profile_sync_test_util.cc",
+    "profile_sync_test_util.h",
   ]
 
   deps = [
     ":browser",
     "//base",
+    "//components/sync_driver",
     "//components/sync_driver:test_support",
     "//google_apis",
     "//testing/gmock",
diff --git a/components/browser_sync/browser/profile_sync_test_util.cc b/components/browser_sync/browser/profile_sync_test_util.cc
new file mode 100644
index 0000000..b941c32
--- /dev/null
+++ b/components/browser_sync/browser/profile_sync_test_util.cc
@@ -0,0 +1,17 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "components/browser_sync/browser/profile_sync_test_util.h"
+
+namespace browser_sync {
+
+void EmptyNetworkTimeUpdate(const base::Time&,
+                            const base::TimeDelta&,
+                            const base::TimeDelta&) {}
+
+SyncServiceObserverMock::SyncServiceObserverMock() {}
+
+SyncServiceObserverMock::~SyncServiceObserverMock() {}
+
+}  // namespace browser_sync
diff --git a/components/browser_sync/browser/profile_sync_test_util.h b/components/browser_sync/browser/profile_sync_test_util.h
new file mode 100644
index 0000000..d0b7007
--- /dev/null
+++ b/components/browser_sync/browser/profile_sync_test_util.h
@@ -0,0 +1,35 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COMPONENTS_BROWSER_SYNC_BROWSER_PROFILE_SYNC_TEST_UTIL_H_
+#define COMPONENTS_BROWSER_SYNC_BROWSER_PROFILE_SYNC_TEST_UTIL_H_
+
+#include "base/time/time.h"
+#include "components/sync_driver/sync_service_observer.h"
+#include "testing/gmock/include/gmock/gmock.h"
+
+namespace base {
+class Time;
+class TimeDelta;
+}
+
+namespace browser_sync {
+
+// An empty syncer::NetworkTimeUpdateCallback. Used in various tests to
+// instantiate ProfileSyncService.
+void EmptyNetworkTimeUpdate(const base::Time&,
+                            const base::TimeDelta&,
+                            const base::TimeDelta&);
+
+class SyncServiceObserverMock : public sync_driver::SyncServiceObserver {
+ public:
+  SyncServiceObserverMock();
+  virtual ~SyncServiceObserverMock();
+
+  MOCK_METHOD0(OnStateChanged, void());
+};
+
+}  // namespace browser_sync
+
+#endif  // COMPONENTS_BROWSER_SYNC_BROWSER_PROFILE_SYNC_TEST_UTIL_H_