Move spellcheck messages into their own file, and dispatch them all in SpellCheckMessageFilter. The next step would be to make WebView have a setter for a WebSpellCheckClient that SpellCheckProvider implements so that spelling can be taken out of RenderView completely.

Review URL: http://codereview.chromium.org/6730045

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@79362 0039d316-1c4b-4281-b951-d872f2087c98

22 files changed, 231 insertions, 229 deletions

diff --git a/chrome/browser/renderer_host/browser_render_process_host.cc b/chrome/browser/renderer_host/browser_render_process_host.cc
index b6af6e2..2f1ce67 100644
--- a/chrome/browser/renderer_host/browser_render_process_host.cc
+++ b/chrome/browser/renderer_host/browser_render_process_host.cc
@@ -56,8 +56,8 @@
 #include "chrome/common/net/url_request_context_getter.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/render_messages.h"
-#include "chrome/common/render_messages_params.h"
 #include "chrome/common/safebrowsing_messages.h"
+#include "chrome/common/spellcheck_messages.h"
 #include "chrome/renderer/render_process_impl.h"
 #include "chrome/renderer/render_thread.h"
 #include "content/browser/appcache/appcache_dispatcher_host.h"
@@ -1007,7 +1007,7 @@ bool BrowserRenderProcessHost::OnMessageReceived(const IPC::Message& msg) {
                           OnExtensionCloseChannel)
       IPC_MESSAGE_HANDLER(ViewHostMsg_UserMetricsRecordAction,
                           OnUserMetricsRecordAction)
-      IPC_MESSAGE_HANDLER(ViewHostMsg_SpellChecker_RequestDictionary,
+      IPC_MESSAGE_HANDLER(SpellCheckHostMsg_RequestDictionary,
                           OnSpellCheckerRequestDictionary)
       IPC_MESSAGE_UNHANDLED_ERROR()
     IPC_END_MESSAGE_MAP_EX()
@@ -1249,7 +1249,7 @@ void BrowserRenderProcessHost::OnSpellCheckerRequestDictionary() {
 }
 
 void BrowserRenderProcessHost::AddSpellCheckWord(const std::string& word) {
-  Send(new ViewMsg_SpellChecker_WordAdded(word));
+  Send(new SpellCheckMsg_WordAdded(word));
 }
 
 void BrowserRenderProcessHost::InitSpellChecker() {
@@ -1273,13 +1273,13 @@ void BrowserRenderProcessHost::InitSpellChecker() {
 #endif
     }
 
-    Send(new ViewMsg_SpellChecker_Init(
+    Send(new SpellCheckMsg_Init(
         file,
         spellcheck_host->GetCustomWords(),
         spellcheck_host->GetLanguage(),
         prefs->GetBoolean(prefs::kEnableAutoSpellCorrect)));
   } else {
-    Send(new ViewMsg_SpellChecker_Init(
+    Send(new SpellCheckMsg_Init(
         IPC::InvalidPlatformFileForTransit(),
         std::vector<std::string>(),
         std::string(),
@@ -1288,7 +1288,7 @@ void BrowserRenderProcessHost::InitSpellChecker() {
 }
 
 void BrowserRenderProcessHost::EnableAutoSpellCorrect(bool enable) {
-  Send(new ViewMsg_SpellChecker_EnableAutoSpellCorrect(enable));
+  Send(new SpellCheckMsg_EnableAutoSpellCorrect(enable));
 }
 
 void BrowserRenderProcessHost::InitClientSidePhishingDetection() {
diff --git a/chrome/browser/renderer_host/chrome_render_message_filter.cc b/chrome/browser/renderer_host/chrome_render_message_filter.cc
index 8d3f5a2..7c4dcd7 100644
--- a/chrome/browser/renderer_host/chrome_render_message_filter.cc
+++ b/chrome/browser/renderer_host/chrome_render_message_filter.cc
@@ -5,7 +5,9 @@
 #include "chrome/browser/renderer_host/chrome_render_message_filter.h"
 
 #include "chrome/browser/browser_process.h"
+#include "chrome/browser/metrics/histogram_synchronizer.h"
 #include "chrome/browser/nacl_host/nacl_process_host.h"
+#include "chrome/browser/net/predictor_api.h"
 #include "chrome/common/render_messages.h"
 #include "content/browser/renderer_host/resource_dispatcher_host.h"
 
@@ -23,6 +25,8 @@ bool ChromeRenderMessageFilter::OnMessageReceived(const IPC::Message& message,
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP_EX(ChromeRenderMessageFilter, message, *message_was_ok)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(ViewHostMsg_LaunchNaCl, OnLaunchNaCl)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_DnsPrefetch, OnDnsPrefetch)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_RendererHistograms, OnRendererHistograms)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
@@ -38,3 +42,14 @@ void ChromeRenderMessageFilter::OnLaunchNaCl(
   NaClProcessHost* host = new NaClProcessHost(resource_dispatcher_host_, url);
   host->Launch(this, channel_descriptor, reply_msg);
 }
+
+void ChromeRenderMessageFilter::OnDnsPrefetch(
+    const std::vector<std::string>& hostnames) {
+  chrome_browser_net::DnsPrefetchList(hostnames);
+}
+
+void ChromeRenderMessageFilter::OnRendererHistograms(
+    int sequence_number,
+    const std::vector<std::string>& histograms) {
+  HistogramSynchronizer::DeserializeHistogramList(sequence_number, histograms);
+}
diff --git a/chrome/browser/renderer_host/chrome_render_message_filter.h b/chrome/browser/renderer_host/chrome_render_message_filter.h
index 1ab51fc..78a96f7 100644
--- a/chrome/browser/renderer_host/chrome_render_message_filter.h
+++ b/chrome/browser/renderer_host/chrome_render_message_filter.h
@@ -30,6 +30,9 @@ class ChromeRenderMessageFilter : public BrowserMessageFilter {
   void OnLaunchNaCl(const std::wstring& url,
                     int channel_descriptor,
                     IPC::Message* reply_msg);
+  void OnDnsPrefetch(const std::vector<std::string>& hostnames);
+  void OnRendererHistograms(int sequence_number,
+                            const std::vector<std::string>& histogram_info);
 
   ResourceDispatcherHost* resource_dispatcher_host_;
 
diff --git a/chrome/browser/spellcheck_message_filter.cc b/chrome/browser/spellcheck_message_filter.cc
index f2efbf9..1a63117 100644
--- a/chrome/browser/spellcheck_message_filter.cc
+++ b/chrome/browser/spellcheck_message_filter.cc
@@ -5,7 +5,7 @@
 #include "chrome/browser/spellcheck_message_filter.h"
 
 #include "chrome/browser/spellchecker_platform_engine.h"
-#include "chrome/common/render_messages.h"
+#include "chrome/common/spellcheck_messages.h"
 
 SpellCheckMessageFilter::SpellCheckMessageFilter() {
 }
@@ -17,13 +17,53 @@ bool SpellCheckMessageFilter::OnMessageReceived(const IPC::Message& message,
                                           bool* message_was_ok) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP_EX(SpellCheckMessageFilter, message, *message_was_ok)
-    IPC_MESSAGE_HANDLER(ViewHostMsg_SpellChecker_PlatformRequestTextCheck,
+    IPC_MESSAGE_HANDLER(SpellCheckHostMsg_PlatformCheckSpelling,
+                        OnPlatformCheckSpelling)
+    IPC_MESSAGE_HANDLER(SpellCheckHostMsg_PlatformFillSuggestionList,
+                        OnPlatformFillSuggestionList)
+    IPC_MESSAGE_HANDLER(SpellCheckHostMsg_GetDocumentTag, OnGetDocumentTag)
+    IPC_MESSAGE_HANDLER(SpellCheckHostMsg_DocumentWithTagClosed,
+                        OnDocumentWithTagClosed)
+    IPC_MESSAGE_HANDLER(SpellCheckHostMsg_ShowSpellingPanel,
+                        OnShowSpellingPanel)
+    IPC_MESSAGE_HANDLER(SpellCheckHostMsg_UpdateSpellingPanelWithMisspelledWord,
+                        OnUpdateSpellingPanelWithMisspelledWord)
+    IPC_MESSAGE_HANDLER(SpellCheckHostMsg_PlatformRequestTextCheck,
                         OnPlatformRequestTextCheck)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
+void SpellCheckMessageFilter::OnPlatformCheckSpelling(const string16& word,
+                                                      int tag,
+                                                      bool* correct) {
+  *correct = SpellCheckerPlatform::CheckSpelling(word, tag);
+}
+
+void SpellCheckMessageFilter::OnPlatformFillSuggestionList(
+    const string16& word,
+    std::vector<string16>* suggestions) {
+  SpellCheckerPlatform::FillSuggestionList(word, suggestions);
+}
+
+void SpellCheckMessageFilter::OnGetDocumentTag(int* tag) {
+  *tag = SpellCheckerPlatform::GetDocumentTag();
+}
+
+void SpellCheckMessageFilter::OnDocumentWithTagClosed(int tag) {
+  SpellCheckerPlatform::CloseDocumentWithTag(tag);
+}
+
+void SpellCheckMessageFilter::OnShowSpellingPanel(bool show) {
+  SpellCheckerPlatform::ShowSpellingPanel(show);
+}
+
+void SpellCheckMessageFilter::OnUpdateSpellingPanelWithMisspelledWord(
+    const string16& word) {
+  SpellCheckerPlatform::UpdateSpellingPanelWithMisspelledWord(word);
+}
+
 void SpellCheckMessageFilter::OnPlatformRequestTextCheck(
     int route_id,
     int identifier,
diff --git a/chrome/browser/spellcheck_message_filter.h b/chrome/browser/spellcheck_message_filter.h
index bd4bafc..9dadd7f 100644
--- a/chrome/browser/spellcheck_message_filter.h
+++ b/chrome/browser/spellcheck_message_filter.h
@@ -19,6 +19,13 @@ class SpellCheckMessageFilter : public BrowserMessageFilter {
                                  bool* message_was_ok);
 
  private:
+  void OnPlatformCheckSpelling(const string16& word, int tag, bool* correct);
+  void OnPlatformFillSuggestionList(const string16& word,
+                                    std::vector<string16>* suggestions);
+  void OnGetDocumentTag(int* tag);
+  void OnDocumentWithTagClosed(int tag);
+  void OnShowSpellingPanel(bool show);
+  void OnUpdateSpellingPanelWithMisspelledWord(const string16& word);
   void OnPlatformRequestTextCheck(int route_id,
                                   int identifier,
                                   int document_tag,
diff --git a/chrome/browser/spellcheck_message_filter_browsertest.cc b/chrome/browser/spellcheck_message_filter_browsertest.cc
index 979e60c..b981a19 100644
--- a/chrome/browser/spellcheck_message_filter_browsertest.cc
+++ b/chrome/browser/spellcheck_message_filter_browsertest.cc
@@ -6,7 +6,7 @@
 #include "base/message_loop.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/spellcheck_message_filter.h"
-#include "chrome/common/render_messages.h"
+#include "chrome/common/spellcheck_messages.h"
 #include "chrome/test/in_process_browser_test.h"
 #include "chrome/test/ui_test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -47,7 +47,7 @@ IN_PROC_BROWSER_TEST_F(SpellCheckMessageFilterBrowserTest,
   scoped_refptr<TestingSpellCheckMessageFilter> target
       (new TestingSpellCheckMessageFilter(MessageLoopForUI::current()));
 
-  ViewHostMsg_SpellChecker_PlatformRequestTextCheck to_be_received
+  SpellCheckHostMsg_PlatformRequestTextCheck to_be_received
       (123, 456, 789, UTF8ToUTF16("zz."));
   bool handled = false;
   target->OnMessageReceived(to_be_received, &handled);
@@ -59,7 +59,7 @@ IN_PROC_BROWSER_TEST_F(SpellCheckMessageFilterBrowserTest,
   int sent_identifier;
   int sent_tag;
   std::vector<WebKit::WebTextCheckingResult> sent_results;
-  bool ok = ViewMsg_SpellChecker_RespondTextCheck::Read(
+  bool ok = SpellCheckMsg_RespondTextCheck::Read(
       target->sent_messages_[0], &sent_identifier, &sent_tag, &sent_results);
   EXPECT_TRUE(ok);
   EXPECT_EQ(1U, sent_results.size());
diff --git a/chrome/browser/spellchecker_mac.mm b/chrome/browser/spellchecker_mac.mm
index 6b22888..ba30547 100644
--- a/chrome/browser/spellchecker_mac.mm
+++ b/chrome/browser/spellchecker_mac.mm
@@ -14,8 +14,8 @@
 #include "base/task.h"
 #include "base/time.h"
 #include "base/sys_string_conversions.h"
-#include "chrome/common/render_messages.h"
 #include "chrome/common/spellcheck_common.h"
+#include "chrome/common/spellcheck_messages.h"
 #include "content/browser/browser_thread.h"
 #include "content/browser/browser_message_filter.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebTextCheckingResult.h"
@@ -31,7 +31,7 @@ const unsigned int kShortLanguageCodeSize = 2;
 // the FILE thread.
 //
 // The result of the check is returned back as a
-// ViewMsg_SpellChecker_RespondTextCheck message.
+// SpellCheckMsg_RespondTextCheck message.
 class TextCheckingTask : public Task {
  public:
   TextCheckingTask(BrowserMessageFilter* destination,
@@ -75,10 +75,10 @@ class TextCheckingTask : public Task {
         NewRunnableMethod(
             destination_.get(),
             &BrowserMessageFilter::Send,
-            new ViewMsg_SpellChecker_RespondTextCheck(route_id_,
-                                                      identifier_,
-                                                      document_tag_,
-                                                      check_results)));
+            new SpellCheckMsg_RespondTextCheck(route_id_,
+                                               identifier_,
+                                               document_tag_,
+                                               check_results)));
   }
 
  private:
diff --git a/chrome/chrome_common.gypi b/chrome/chrome_common.gypi
index fdbeb6c..3fcb4f4 100644
--- a/chrome/chrome_common.gypi
+++ b/chrome/chrome_common.gypi
@@ -222,6 +222,7 @@
         'common/service_process_util_win.cc',
         'common/spellcheck_common.cc',
         'common/spellcheck_common.h',
+        'common/spellcheck_messages.h',
         'common/sqlite_compiled_statement.cc',
         'common/sqlite_compiled_statement.h',
         'common/sqlite_utils.cc',
diff --git a/chrome/common/common_message_generator.h b/chrome/common/common_message_generator.h
index d05d225..6d6dfb5 100644
--- a/chrome/common/common_message_generator.h
+++ b/chrome/common/common_message_generator.h
@@ -10,4 +10,5 @@
 #include "chrome/common/render_messages.h"
 #include "chrome/common/safebrowsing_messages.h"
 #include "chrome/common/service_messages.h"
+#include "chrome/common/spellcheck_messages.h"
 #include "chrome/common/utility_messages.h"
diff --git a/chrome/common/render_messages.h b/chrome/common/render_messages.h
index 05eb031..ea5347c 100644
--- a/chrome/common/render_messages.h
+++ b/chrome/common/render_messages.h
@@ -42,12 +42,10 @@
 #include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_message_macros.h"
 #include "ipc/ipc_message_utils.h"
-#include "ipc/ipc_platform_file.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCache.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCompositionUnderline.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebConsoleMessage.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebMediaPlayerAction.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebTextCheckingResult.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/rect.h"
 #include "webkit/glue/webcursor.h"
@@ -152,7 +150,6 @@ IPC_ENUM_TRAITS(InstantCompleteBehavior)
 IPC_ENUM_TRAITS(TranslateErrors::Type)
 IPC_ENUM_TRAITS(ViewType::Type)
 IPC_ENUM_TRAITS(WebKit::WebConsoleMessage::Level)
-IPC_ENUM_TRAITS(WebKit::WebTextCheckingResult::Error)
 
 IPC_STRUCT_TRAITS_BEGIN(ThumbnailScore)
   IPC_STRUCT_TRAITS_MEMBER(boring_score)
@@ -200,12 +197,6 @@ IPC_STRUCT_TRAITS_BEGIN(WebKit::WebCache::UsageStats)
   IPC_STRUCT_TRAITS_MEMBER(deadSize)
 IPC_STRUCT_TRAITS_END()
 
-IPC_STRUCT_TRAITS_BEGIN(WebKit::WebTextCheckingResult)
-  IPC_STRUCT_TRAITS_MEMBER(error)
-  IPC_STRUCT_TRAITS_MEMBER(position)
-  IPC_STRUCT_TRAITS_MEMBER(length)
-IPC_STRUCT_TRAITS_END()
-
 //-----------------------------------------------------------------------------
 // RenderView messages
 // These are messages sent from the browser to the renderer process.
@@ -435,38 +426,6 @@ IPC_MESSAGE_ROUTED1(ViewMsg_NotifyRenderViewType,
 IPC_MESSAGE_ROUTED1(ViewMsg_ExecuteCode,
                     ViewMsg_ExecuteCode_Params)
 
-// SpellChecker messages.
-
-IPC_MESSAGE_ROUTED0(ViewMsg_ToggleSpellCheck)
-IPC_MESSAGE_ROUTED1(ViewMsg_ToggleSpellPanel,
-                    bool)
-IPC_MESSAGE_ROUTED3(ViewMsg_SpellChecker_RespondTextCheck,
-                    int        /* request identifier given by WebKit */,
-                    int        /* document tag */,
-                    std::vector<WebKit::WebTextCheckingResult>)
-
-// This message tells the renderer to advance to the next misspelling. It is
-// sent when the user clicks the "Find Next" button on the spelling panel.
-IPC_MESSAGE_ROUTED0(ViewMsg_AdvanceToNextMisspelling)
-
-// Passes some initialization params to the renderer's spellchecker. This can
-// be called directly after startup or in (async) response to a
-// RequestDictionary ViewHost message.
-IPC_MESSAGE_CONTROL4(ViewMsg_SpellChecker_Init,
-                     IPC::PlatformFileForTransit /* bdict_file */,
-                     std::vector<std::string> /* custom_dict_words */,
-                     std::string /* language */,
-                     bool /* auto spell correct */)
-
-// A word has been added to the custom dictionary; update the local custom
-// word list.
-IPC_MESSAGE_CONTROL1(ViewMsg_SpellChecker_WordAdded,
-                     std::string /* word */)
-
-// Toggle the auto spell correct functionality.
-IPC_MESSAGE_CONTROL1(ViewMsg_SpellChecker_EnableAutoSpellCorrect,
-                     bool /* enable */)
-
 // Tells the renderer to translate the page contents from one language to
 // another.
 IPC_MESSAGE_ROUTED4(ViewMsg_TranslatePage,
@@ -494,52 +453,6 @@ IPC_MESSAGE_CONTROL1(ViewMsg_SetIsIncognitoProcess,
 IPC_MESSAGE_CONTROL1(ViewHostMsg_UpdatedCacheStats,
                      WebKit::WebCache::UsageStats /* stats */)
 
-// Requests spellcheck for a word.
-IPC_SYNC_MESSAGE_ROUTED2_2(ViewHostMsg_SpellCheck,
-                           string16 /* word to check */,
-                           int /* document tag*/,
-                           int /* misspell location */,
-                           int /* misspell length */)
-
-// Asks the browser for a unique document tag.
-IPC_SYNC_MESSAGE_ROUTED0_1(ViewHostMsg_GetDocumentTag,
-                           int /* the tag */)
-
-// This message tells the spellchecker that a document, identified by an int
-// tag, has been closed and all of the ignored words for that document can be
-// forgotten.
-IPC_MESSAGE_ROUTED1(ViewHostMsg_DocumentWithTagClosed,
-                    int /* the tag */)
-
-// Tells the browser to display or not display the SpellingPanel
-IPC_MESSAGE_ROUTED1(ViewHostMsg_ShowSpellingPanel,
-                    bool /* if true, then show it, otherwise hide it*/)
-
-// Tells the browser to update the spelling panel with the given word.
-IPC_MESSAGE_ROUTED1(ViewHostMsg_UpdateSpellingPanelWithMisspelledWord,
-                    string16 /* the word to update the panel with */)
-
-// The renderer has tried to spell check a word, but couldn't because no
-// dictionary was available to load. Request that the browser find an
-// appropriate dictionary and return it.
-IPC_MESSAGE_CONTROL0(ViewHostMsg_SpellChecker_RequestDictionary)
-
-IPC_SYNC_MESSAGE_CONTROL2_1(ViewHostMsg_SpellChecker_PlatformCheckSpelling,
-                            string16 /* word */,
-                            int /* document tag */,
-                            bool /* correct */)
-
-IPC_SYNC_MESSAGE_CONTROL1_1(
-    ViewHostMsg_SpellChecker_PlatformFillSuggestionList,
-    string16 /* word */,
-    std::vector<string16> /* suggestions */)
-
-IPC_MESSAGE_CONTROL4(ViewHostMsg_SpellChecker_PlatformRequestTextCheck,
-                     int /* route_id for response */,
-                     int /* request identifier given by WebKit */,
-                     int /* document tag */,
-                     string16 /* sentence */)
-
 // Tells the browser that content in the current page was blocked due to the
 // user's content settings.
 IPC_MESSAGE_ROUTED2(ViewHostMsg_ContentBlocked,
diff --git a/chrome/common/spellcheck_messages.h b/chrome/common/spellcheck_messages.h
new file mode 100644
index 0000000..34ccb5c
--- /dev/null
+++ b/chrome/common/spellcheck_messages.h
@@ -0,0 +1,96 @@
+// Copyright (c) 2011 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.
+
+// IPC messages for spellcheck.
+// Multiply-included message file, hence no include guard.
+
+#include "ipc/ipc_message_macros.h"
+#include "ipc/ipc_platform_file.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebTextCheckingResult.h"
+
+#define IPC_MESSAGE_START SpellCheckMsgStart
+
+IPC_ENUM_TRAITS(WebKit::WebTextCheckingResult::Error)
+
+IPC_STRUCT_TRAITS_BEGIN(WebKit::WebTextCheckingResult)
+  IPC_STRUCT_TRAITS_MEMBER(error)
+  IPC_STRUCT_TRAITS_MEMBER(position)
+  IPC_STRUCT_TRAITS_MEMBER(length)
+IPC_STRUCT_TRAITS_END()
+
+
+// Messages sent from the browser to the renderer.
+
+IPC_MESSAGE_ROUTED0(SpellCheckMsg_ToggleSpellCheck)
+
+IPC_MESSAGE_ROUTED1(SpellCheckMsg_ToggleSpellPanel,
+                    bool)
+
+IPC_MESSAGE_ROUTED3(SpellCheckMsg_RespondTextCheck,
+                    int        /* request identifier given by WebKit */,
+                    int        /* document tag */,
+                    std::vector<WebKit::WebTextCheckingResult>)
+
+// This message tells the renderer to advance to the next misspelling. It is
+// sent when the user clicks the "Find Next" button on the spelling panel.
+IPC_MESSAGE_ROUTED0(SpellCheckMsg_AdvanceToNextMisspelling)
+
+// Passes some initialization params to the renderer's spellchecker. This can
+// be called directly after startup or in (async) response to a
+// RequestDictionary ViewHost message.
+IPC_MESSAGE_CONTROL4(SpellCheckMsg_Init,
+                     IPC::PlatformFileForTransit /* bdict_file */,
+                     std::vector<std::string> /* custom_dict_words */,
+                     std::string /* language */,
+                     bool /* auto spell correct */)
+
+// A word has been added to the custom dictionary; update the local custom
+// word list.
+IPC_MESSAGE_CONTROL1(SpellCheckMsg_WordAdded,
+                     std::string /* word */)
+
+// Toggle the auto spell correct functionality.
+IPC_MESSAGE_CONTROL1(SpellCheckMsg_EnableAutoSpellCorrect,
+                     bool /* enable */)
+
+
+// Messages sent from the renderer to the browser.
+
+// Asks the browser for a unique document tag.
+IPC_SYNC_MESSAGE_ROUTED0_1(SpellCheckHostMsg_GetDocumentTag,
+                           int /* the tag */)
+
+// This message tells the spellchecker that a document, identified by an int
+// tag, has been closed and all of the ignored words for that document can be
+// forgotten.
+IPC_MESSAGE_ROUTED1(SpellCheckHostMsg_DocumentWithTagClosed,
+                    int /* the tag */)
+
+// Tells the browser to display or not display the SpellingPanel
+IPC_MESSAGE_ROUTED1(SpellCheckHostMsg_ShowSpellingPanel,
+                    bool /* if true, then show it, otherwise hide it*/)
+
+// Tells the browser to update the spelling panel with the given word.
+IPC_MESSAGE_ROUTED1(SpellCheckHostMsg_UpdateSpellingPanelWithMisspelledWord,
+                    string16 /* the word to update the panel with */)
+
+// The renderer has tried to spell check a word, but couldn't because no
+// dictionary was available to load. Request that the browser find an
+// appropriate dictionary and return it.
+IPC_MESSAGE_CONTROL0(SpellCheckHostMsg_RequestDictionary)
+
+IPC_SYNC_MESSAGE_CONTROL2_1(SpellCheckHostMsg_PlatformCheckSpelling,
+                            string16 /* word */,
+                            int /* document tag */,
+                            bool /* correct */)
+
+IPC_SYNC_MESSAGE_CONTROL1_1(SpellCheckHostMsg_PlatformFillSuggestionList,
+                            string16 /* word */,
+                            std::vector<string16> /* suggestions */)
+
+IPC_MESSAGE_CONTROL4(SpellCheckHostMsg_PlatformRequestTextCheck,
+                     int /* route_id for response */,
+                     int /* request identifier given by WebKit */,
+                     int /* document tag */,
+                     string16 /* sentence */)
diff --git a/chrome/renderer/render_thread.cc b/chrome/renderer/render_thread.cc
index b66da67..c32c11e 100644
--- a/chrome/renderer/render_thread.cc
+++ b/chrome/renderer/render_thread.cc
@@ -28,7 +28,7 @@
 #include "chrome/common/extensions/extension_localization_peer.h"
 #include "chrome/common/extensions/extension_set.h"
 #include "chrome/common/render_messages.h"
-#include "chrome/common/render_messages_params.h"
+#include "chrome/common/spellcheck_messages.h"
 #include "chrome/common/safebrowsing_messages.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/renderer/automation/dom_automation_v8_extension.h"
@@ -657,45 +657,35 @@ bool RenderThread::OnControlMessageReceived(const IPC::Message& msg) {
     IPC_MESSAGE_HANDLER(ViewMsg_New, OnCreateNewView)
     IPC_MESSAGE_HANDLER(ViewMsg_SetCacheCapacities, OnSetCacheCapacities)
     IPC_MESSAGE_HANDLER(ViewMsg_ClearCache, OnClearCache)
-    IPC_MESSAGE_HANDLER(ViewMsg_GetRendererHistograms,
-                        OnGetRendererHistograms)
+    IPC_MESSAGE_HANDLER(ViewMsg_GetRendererHistograms, OnGetRendererHistograms)
 #if defined(USE_TCMALLOC)
-    IPC_MESSAGE_HANDLER(ViewMsg_GetRendererTcmalloc,
-                        OnGetRendererTcmalloc)
+    IPC_MESSAGE_HANDLER(ViewMsg_GetRendererTcmalloc, OnGetRendererTcmalloc)
 #endif
     IPC_MESSAGE_HANDLER(ViewMsg_GetV8HeapStats, OnGetV8HeapStats)
-    IPC_MESSAGE_HANDLER(ViewMsg_GetCacheResourceStats,
-                        OnGetCacheResourceStats)
-    IPC_MESSAGE_HANDLER(ViewMsg_UserScripts_UpdatedScripts,
-                        OnUpdateUserScripts)
+    IPC_MESSAGE_HANDLER(ViewMsg_GetCacheResourceStats, OnGetCacheResourceStats)
+    IPC_MESSAGE_HANDLER(ViewMsg_UserScripts_UpdatedScripts, OnUpdateUserScripts)
     // TODO(rafaelw): create an ExtensionDispatcher that handles extension
     // messages seperates their handling from the RenderThread.
     IPC_MESSAGE_HANDLER(ViewMsg_ExtensionMessageInvoke,
                         OnExtensionMessageInvoke)
     IPC_MESSAGE_HANDLER(ViewMsg_Extension_SetFunctionNames,
                         OnSetExtensionFunctionNames)
-    IPC_MESSAGE_HANDLER(ViewMsg_ExtensionLoaded,
-                        OnExtensionLoaded)
-    IPC_MESSAGE_HANDLER(ViewMsg_ExtensionUnloaded,
-                        OnExtensionUnloaded)
+    IPC_MESSAGE_HANDLER(ViewMsg_ExtensionLoaded, OnExtensionLoaded)
+    IPC_MESSAGE_HANDLER(ViewMsg_ExtensionUnloaded, OnExtensionUnloaded)
     IPC_MESSAGE_HANDLER(ViewMsg_Extension_SetScriptingWhitelist,
                         OnSetExtensionScriptingWhitelist)
     IPC_MESSAGE_HANDLER(ViewMsg_PurgeMemory, OnPurgeMemory)
-    IPC_MESSAGE_HANDLER(ViewMsg_PurgePluginListCache,
-                        OnPurgePluginListCache)
+    IPC_MESSAGE_HANDLER(ViewMsg_PurgePluginListCache, OnPurgePluginListCache)
     IPC_MESSAGE_HANDLER(ViewMsg_Extension_UpdatePageActions,
                         OnPageActionsUpdated)
     IPC_MESSAGE_HANDLER(ViewMsg_Extension_SetAPIPermissions,
                         OnExtensionSetAPIPermissions)
     IPC_MESSAGE_HANDLER(ViewMsg_Extension_SetHostPermissions,
                         OnExtensionSetHostPermissions)
-    IPC_MESSAGE_HANDLER(DOMStorageMsg_Event,
-                        OnDOMStorageEvent)
-    IPC_MESSAGE_HANDLER(ViewMsg_SpellChecker_Init,
-                        OnInitSpellChecker)
-    IPC_MESSAGE_HANDLER(ViewMsg_SpellChecker_WordAdded,
-                        OnSpellCheckWordAdded)
-    IPC_MESSAGE_HANDLER(ViewMsg_SpellChecker_EnableAutoSpellCorrect,
+    IPC_MESSAGE_HANDLER(DOMStorageMsg_Event, OnDOMStorageEvent)
+    IPC_MESSAGE_HANDLER(SpellCheckMsg_Init, OnInitSpellChecker)
+    IPC_MESSAGE_HANDLER(SpellCheckMsg_WordAdded, OnSpellCheckWordAdded)
+    IPC_MESSAGE_HANDLER(SpellCheckMsg_EnableAutoSpellCorrect,
                         OnSpellCheckEnableAutoSpellCorrect)
     IPC_MESSAGE_HANDLER(GpuMsg_GpuChannelEstablished, OnGpuChannelEstablished)
     IPC_MESSAGE_HANDLER(SafeBrowsingMsg_SetPhishingModel, OnSetPhishingModel)
diff --git a/chrome/renderer/spellchecker/spellcheck.cc b/chrome/renderer/spellchecker/spellcheck.cc
index 4220f4a..9c700ae 100644
--- a/chrome/renderer/spellchecker/spellcheck.cc
+++ b/chrome/renderer/spellchecker/spellcheck.cc
@@ -8,8 +8,8 @@
 #include "base/metrics/histogram.h"
 #include "base/time.h"
 #include "base/utf_string_conversions.h"
-#include "chrome/common/render_messages.h"
 #include "chrome/common/spellcheck_common.h"
+#include "chrome/common/spellcheck_messages.h"
 #include "chrome/renderer/render_thread.h"
 #include "third_party/hunspell/src/hunspell/hunspell.hxx"
 
@@ -198,8 +198,7 @@ bool SpellCheck::InitializeIfNeeded() {
     return false;
 
   if (!initialized_) {
-    RenderThread::current()->Send(
-        new ViewHostMsg_SpellChecker_RequestDictionary);
+    RenderThread::current()->Send(new SpellCheckHostMsg_RequestDictionary);
     initialized_ = true;
     return true;
   }
@@ -218,8 +217,8 @@ bool SpellCheck::CheckSpelling(const string16& word_to_check, int tag) {
 
   if (is_using_platform_spelling_engine_) {
     RenderThread::current()->Send(
-        new ViewHostMsg_SpellChecker_PlatformCheckSpelling(word_to_check, tag,
-                                                           &word_correct));
+        new SpellCheckHostMsg_PlatformCheckSpelling(word_to_check, tag,
+                                                    &word_correct));
   } else {
     std::string word_to_check_utf8(UTF16ToUTF8(word_to_check));
     // Hunspell shouldn't let us exceed its max, but check just in case
@@ -244,7 +243,7 @@ void SpellCheck::FillSuggestionList(
     std::vector<string16>* optional_suggestions) {
   if (is_using_platform_spelling_engine_) {
     RenderThread::current()->Send(
-        new ViewHostMsg_SpellChecker_PlatformFillSuggestionList(
+        new SpellCheckHostMsg_PlatformFillSuggestionList(
             wrong_word, optional_suggestions));
     return;
   }
diff --git a/chrome/renderer/spellchecker/spellcheck_provider.cc b/chrome/renderer/spellchecker/spellcheck_provider.cc
index 779844d..da06c1e 100644
--- a/chrome/renderer/spellchecker/spellcheck_provider.cc
+++ b/chrome/renderer/spellchecker/spellcheck_provider.cc
@@ -4,9 +4,10 @@
 
 #include "chrome/renderer/spellchecker/spellcheck_provider.h"
 
-#include "chrome/common/render_messages.h"
+#include "chrome/common/spellcheck_messages.h"
 #include "chrome/renderer/render_thread.h"
 #include "chrome/renderer/spellchecker/spellcheck.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebString.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebTextCheckingCompletion.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebTextCheckingResult.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebVector.h"
@@ -38,14 +39,14 @@ void SpellCheckProvider::RequestTextChecking(
     return;
   }
 
-  Send(new ViewHostMsg_SpellChecker_PlatformRequestTextCheck(
+  Send(new SpellCheckHostMsg_PlatformRequestTextCheck(
       routing_id(),
       text_check_completions_.Add(completion),
       document_tag,
       text));
 }
 
-void SpellCheckProvider::OnSpellCheckerRespondTextCheck(
+void SpellCheckProvider::OnRespondTextCheck(
     int identifier,
     int tag,
     const std::vector<WebTextCheckingResult>& results) {
@@ -60,8 +61,7 @@ void SpellCheckProvider::OnSpellCheckerRespondTextCheck(
 bool SpellCheckProvider::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(SpellCheckProvider, message)
-    IPC_MESSAGE_HANDLER(ViewMsg_SpellChecker_RespondTextCheck,
-                        OnSpellCheckerRespondTextCheck)
+    IPC_MESSAGE_HANDLER(SpellCheckMsg_RespondTextCheck, OnRespondTextCheck)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
diff --git a/chrome/renderer/spellchecker/spellcheck_provider.h b/chrome/renderer/spellchecker/spellcheck_provider.h
index b774e35..7157f11 100644
--- a/chrome/renderer/spellchecker/spellcheck_provider.h
+++ b/chrome/renderer/spellchecker/spellcheck_provider.h
@@ -29,7 +29,7 @@ class SpellCheckProvider : public RenderViewObserver {
   SpellCheckProvider(RenderView* render_view, SpellCheck* spellcheck);
   virtual ~SpellCheckProvider();
 
-  // Reqeusts async spell and grammar checker to the platform text
+  // Requests async spell and grammar checker to the platform text
   // checker, which is available on the browser process.
   void RequestTextChecking(
       const WebKit::WebString& text,
@@ -50,7 +50,7 @@ class SpellCheckProvider : public RenderViewObserver {
 
  private:
   // A message handler that receives async results for RequestTextChecking().
-  void OnSpellCheckerRespondTextCheck(
+  void OnRespondTextCheck(
       int identifier,
       int tag,
       const std::vector<WebKit::WebTextCheckingResult>& results);
diff --git a/chrome/renderer/spellchecker/spellcheck_provider_unittest.cc b/chrome/renderer/spellchecker/spellcheck_provider_unittest.cc
index bb63f19..bb6b7ab 100644
--- a/chrome/renderer/spellchecker/spellcheck_provider_unittest.cc
+++ b/chrome/renderer/spellchecker/spellcheck_provider_unittest.cc
@@ -5,9 +5,10 @@
 #include <vector>
 
 #include "base/utf_string_conversions.h"
-#include "chrome/common/render_messages.h"
+#include "chrome/common/spellcheck_messages.h"
 #include "chrome/renderer/spellchecker/spellcheck_provider.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebString.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebTextCheckingCompletion.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebTextCheckingResult.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebVector.h"
@@ -84,7 +85,7 @@ struct MessageParameters {
 
 MessageParameters ReadPlatformRequestTextCheck(IPC::Message* message) {
   MessageParameters parameters;
-  bool ok = ViewHostMsg_SpellChecker_PlatformRequestTextCheck::Read(
+  bool ok = SpellCheckHostMsg_PlatformRequestTextCheck::Read(
       message,
       &parameters.router_id,
       &parameters.request_id,
@@ -98,11 +99,11 @@ void FakeMessageArrival(SpellCheckProvider* provider,
                         const MessageParameters& parameters) {
   std::vector<WebKit::WebTextCheckingResult> fake_result;
   bool handled = provider->OnMessageReceived(
-      ViewMsg_SpellChecker_RespondTextCheck
-      (0,
-       parameters.request_id,
-       parameters.document_tag,
-       fake_result));
+      SpellCheckMsg_RespondTextCheck(
+          0,
+          parameters.request_id,
+          parameters.document_tag,
+          fake_result));
   EXPECT_TRUE(handled);
 }
 
diff --git a/content/browser/renderer_host/render_message_filter.cc b/content/browser/renderer_host/render_message_filter.cc
index 917a626d..bdca4a4 100644
--- a/content/browser/renderer_host/render_message_filter.cc
+++ b/content/browser/renderer_host/render_message_filter.cc
@@ -18,16 +18,13 @@
 #include "chrome/browser/clipboard_dispatcher.h"
 #include "chrome/browser/download/download_types.h"
 #include "chrome/browser/extensions/extension_message_service.h"
-#include "chrome/browser/metrics/histogram_synchronizer.h"
 #include "chrome/browser/metrics/user_metrics.h"
 #include "chrome/browser/net/chrome_url_request_context.h"
-#include "chrome/browser/net/predictor_api.h"
 #include "chrome/browser/notifications/desktop_notification_service.h"
 #include "chrome/browser/notifications/notifications_prefs_cache.h"
 #include "chrome/browser/platform_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/renderer_host/browser_render_process_host.h"
-#include "chrome/browser/spellchecker_platform_engine.h"
 #include "chrome/browser/task_manager/task_manager.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension_file_util.h"
@@ -349,19 +346,6 @@ bool RenderMessageFilter::OnMessageReceived(const IPC::Message& message,
                                     OnOpenChannelToPlugin)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(ViewHostMsg_OpenChannelToPepperPlugin,
                                     OnOpenChannelToPepperPlugin)
-    IPC_MESSAGE_HANDLER(ViewHostMsg_SpellChecker_PlatformCheckSpelling,
-                        OnPlatformCheckSpelling)
-    IPC_MESSAGE_HANDLER(ViewHostMsg_SpellChecker_PlatformFillSuggestionList,
-                        OnPlatformFillSuggestionList)
-    IPC_MESSAGE_HANDLER_DELAY_REPLY(ViewHostMsg_GetDocumentTag,
-                                    OnGetDocumentTag)
-    IPC_MESSAGE_HANDLER(ViewHostMsg_DocumentWithTagClosed,
-                        OnDocumentWithTagClosed)
-    IPC_MESSAGE_HANDLER(ViewHostMsg_ShowSpellingPanel, OnShowSpellingPanel)
-    IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateSpellingPanelWithMisspelledWord,
-                        OnUpdateSpellingPanelWithMisspelledWord)
-    IPC_MESSAGE_HANDLER(ViewHostMsg_DnsPrefetch, OnDnsPrefetch)
-    IPC_MESSAGE_HANDLER(ViewHostMsg_RendererHistograms, OnRendererHistograms)
     IPC_MESSAGE_HANDLER_GENERIC(ViewHostMsg_UpdateRect,
         render_widget_helper_->DidReceiveUpdateMsg(message))
     IPC_MESSAGE_HANDLER(DesktopNotificationHostMsg_CheckPermission,
@@ -870,49 +854,6 @@ ChromeURLRequestContext* RenderMessageFilter::GetRequestContextForURL(
       context_getter->GetURLRequestContext());
 }
 
-void RenderMessageFilter::OnPlatformCheckSpelling(const string16& word,
-                                                  int tag,
-                                                  bool* correct) {
-  *correct = SpellCheckerPlatform::CheckSpelling(word, tag);
-}
-
-void RenderMessageFilter::OnPlatformFillSuggestionList(
-    const string16& word,
-    std::vector<string16>* suggestions) {
-  SpellCheckerPlatform::FillSuggestionList(word, suggestions);
-}
-
-void RenderMessageFilter::OnGetDocumentTag(IPC::Message* reply_msg) {
-  int tag = SpellCheckerPlatform::GetDocumentTag();
-  ViewHostMsg_GetDocumentTag::WriteReplyParams(reply_msg, tag);
-  Send(reply_msg);
-  return;
-}
-
-void RenderMessageFilter::OnDocumentWithTagClosed(int tag) {
-  SpellCheckerPlatform::CloseDocumentWithTag(tag);
-}
-
-void RenderMessageFilter::OnShowSpellingPanel(bool show) {
-  SpellCheckerPlatform::ShowSpellingPanel(show);
-}
-
-void RenderMessageFilter::OnUpdateSpellingPanelWithMisspelledWord(
-    const string16& word) {
-  SpellCheckerPlatform::UpdateSpellingPanelWithMisspelledWord(word);
-}
-
-void RenderMessageFilter::OnDnsPrefetch(
-    const std::vector<std::string>& hostnames) {
-  chrome_browser_net::DnsPrefetchList(hostnames);
-}
-
-void RenderMessageFilter::OnRendererHistograms(
-    int sequence_number,
-    const std::vector<std::string>& histograms) {
-  HistogramSynchronizer::DeserializeHistogramList(sequence_number, histograms);
-}
-
 #if defined(OS_MACOSX)
 void RenderMessageFilter::OnAllocTransportDIB(
     size_t size, bool cache_in_browser, TransportDIB::Handle* handle) {
diff --git a/content/browser/renderer_host/render_message_filter.h b/content/browser/renderer_host/render_message_filter.h
index 9504c1a..350c6b7 100644
--- a/content/browser/renderer_host/render_message_filter.h
+++ b/content/browser/renderer_host/render_message_filter.h
@@ -157,16 +157,6 @@ class RenderMessageFilter : public BrowserMessageFilter {
   void OnDownloadUrl(const IPC::Message& message,
                      const GURL& url,
                      const GURL& referrer);
-  void OnPlatformCheckSpelling(const string16& word, int tag, bool* correct);
-  void OnPlatformFillSuggestionList(const string16& word,
-                                    std::vector<string16>* suggestions);
-  void OnGetDocumentTag(IPC::Message* reply_msg);
-  void OnDocumentWithTagClosed(int tag);
-  void OnShowSpellingPanel(bool show);
-  void OnUpdateSpellingPanelWithMisspelledWord(const string16& word);
-  void OnDnsPrefetch(const std::vector<std::string>& hostnames);
-  void OnRendererHistograms(int sequence_number,
-                            const std::vector<std::string>& histogram_info);
 #if defined(USE_TCMALLOC)
   void OnRendererTcmalloc(base::ProcessId pid, const std::string& output);
 #endif
diff --git a/content/browser/renderer_host/render_view_host.cc b/content/browser/renderer_host/render_view_host.cc
index 7ec084d..9ebbaea 100644
--- a/content/browser/renderer_host/render_view_host.cc
+++ b/content/browser/renderer_host/render_view_host.cc
@@ -28,6 +28,7 @@
 #include "chrome/common/render_messages.h"
 #include "chrome/common/print_messages.h"
 #include "chrome/common/safebrowsing_messages.h"
+#include "chrome/common/spellcheck_messages.h"
 #include "chrome/common/translate_errors.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/common/web_apps.h"
@@ -525,7 +526,7 @@ void RenderViewHost::Paste() {
 }
 
 void RenderViewHost::ToggleSpellCheck() {
-  Send(new ViewMsg_ToggleSpellCheck(routing_id()));
+  Send(new SpellCheckMsg_ToggleSpellCheck(routing_id()));
 }
 
 void RenderViewHost::Delete() {
@@ -537,7 +538,7 @@ void RenderViewHost::SelectAll() {
 }
 
 void RenderViewHost::ToggleSpellPanel(bool is_currently_visible) {
-  Send(new ViewMsg_ToggleSpellPanel(routing_id(), is_currently_visible));
+  Send(new SpellCheckMsg_ToggleSpellPanel(routing_id(), is_currently_visible));
 }
 
 int RenderViewHost::DownloadFavicon(const GURL& url, int image_size) {
diff --git a/content/browser/renderer_host/render_widget_host.cc b/content/browser/renderer_host/render_widget_host.cc
index 37dfd4b..a329873 100644
--- a/content/browser/renderer_host/render_widget_host.cc
+++ b/content/browser/renderer_host/render_widget_host.cc
@@ -12,7 +12,7 @@
 #include "chrome/browser/metrics/user_metrics.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/render_messages.h"
-#include "chrome/common/render_messages_params.h"
+#include "chrome/common/spellcheck_messages.h"
 #include "content/browser/renderer_host/backing_store.h"
 #include "content/browser/renderer_host/backing_store_manager.h"
 #include "content/browser/renderer_host/render_process_host.h"
@@ -1201,7 +1201,7 @@ void RenderWidgetHost::ScrollBackingStoreRect(int dx, int dy,
 }
 
 void RenderWidgetHost::ToggleSpellPanel(bool is_currently_visible) {
-  Send(new ViewMsg_ToggleSpellPanel(routing_id(), is_currently_visible));
+  Send(new SpellCheckMsg_ToggleSpellPanel(routing_id(), is_currently_visible));
 }
 
 void RenderWidgetHost::Replace(const string16& word) {
@@ -1209,7 +1209,7 @@ void RenderWidgetHost::Replace(const string16& word) {
 }
 
 void RenderWidgetHost::AdvanceToNextMisspelling() {
-  Send(new ViewMsg_AdvanceToNextMisspelling(routing_id_));
+  Send(new SpellCheckMsg_AdvanceToNextMisspelling(routing_id_));
 }
 
 void RenderWidgetHost::EnableRendererAccessibility() {
diff --git a/content/renderer/render_view.cc b/content/renderer/render_view.cc
index d0debe7..b4f19d4 100644
--- a/content/renderer/render_view.cc
+++ b/content/renderer/render_view.cc
@@ -35,6 +35,7 @@
 #include "chrome/common/render_messages.h"
 #include "chrome/common/render_messages_params.h"
 #include "chrome/common/render_view_commands.h"
+#include "chrome/common/spellcheck_messages.h"
 #include "chrome/common/thumbnail_score.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/common/web_apps.h"
@@ -662,8 +663,10 @@ RenderView::~RenderView() {
 
 #if defined(OS_MACOSX)
   // Tell the spellchecker that the document is closed.
-  if (has_document_tag_)
-    Send(new ViewHostMsg_DocumentWithTagClosed(routing_id_, document_tag_));
+  if (has_document_tag_) {
+    Send(new SpellCheckHostMsg_DocumentWithTagClosed(
+        routing_id_, document_tag_));
+  }
 
   // Destroy all fake plugin window handles on the browser side.
   while (!fake_plugin_window_handles_.empty()) {
@@ -974,10 +977,10 @@ bool RenderView::OnMessageReceived(const IPC::Message& message) {
 #endif
     IPC_MESSAGE_HANDLER(ViewMsg_Paste, OnPaste)
     IPC_MESSAGE_HANDLER(ViewMsg_Replace, OnReplace)
-    IPC_MESSAGE_HANDLER(ViewMsg_ToggleSpellPanel, OnToggleSpellPanel)
-    IPC_MESSAGE_HANDLER(ViewMsg_AdvanceToNextMisspelling,
+    IPC_MESSAGE_HANDLER(SpellCheckMsg_ToggleSpellPanel, OnToggleSpellPanel)
+    IPC_MESSAGE_HANDLER(SpellCheckMsg_AdvanceToNextMisspelling,
                         OnAdvanceToNextMisspelling)
-    IPC_MESSAGE_HANDLER(ViewMsg_ToggleSpellCheck, OnToggleSpellCheck)
+    IPC_MESSAGE_HANDLER(SpellCheckMsg_ToggleSpellCheck, OnToggleSpellCheck)
     IPC_MESSAGE_HANDLER(ViewMsg_Delete, OnDelete)
     IPC_MESSAGE_HANDLER(ViewMsg_SelectAll, OnSelectAll)
     IPC_MESSAGE_HANDLER(ViewMsg_CopyImageAt, OnCopyImageAt)
@@ -2273,7 +2276,7 @@ WebString RenderView::autoCorrectWord(const WebKit::WebString& word) {
 }
 
 void RenderView::showSpellingUI(bool show) {
-  Send(new ViewHostMsg_ShowSpellingPanel(routing_id_, show));
+  Send(new SpellCheckHostMsg_ShowSpellingPanel(routing_id_, show));
 }
 
 bool RenderView::isShowingSpellingUI() {
@@ -2281,8 +2284,8 @@ bool RenderView::isShowingSpellingUI() {
 }
 
 void RenderView::updateSpellingUIWithMisspelledWord(const WebString& word) {
-  Send(new ViewHostMsg_UpdateSpellingPanelWithMisspelledWord(routing_id_,
-                                                             word));
+  Send(new SpellCheckHostMsg_UpdateSpellingPanelWithMisspelledWord(routing_id_,
+                                                                   word));
 }
 
 void RenderView::continuousSpellCheckingEnabledStateChanged() {
@@ -5115,7 +5118,7 @@ void RenderView::EnsureDocumentTag() {
 #if defined(OS_MACOSX)
   if (!has_document_tag_) {
     // Make the call to get the tag.
-    Send(new ViewHostMsg_GetDocumentTag(routing_id_, &document_tag_));
+    Send(new SpellCheckHostMsg_GetDocumentTag(routing_id_, &document_tag_));
     has_document_tag_ = true;
   }
 #endif
diff --git a/ipc/ipc_message_utils.h b/ipc/ipc_message_utils.h
index fa504e6..3d63875 100644
--- a/ipc/ipc_message_utils.h
+++ b/ipc/ipc_message_utils.h
@@ -84,6 +84,7 @@ enum IPCMessageStart {
   ChromeMsgStart,
   DragMsgStart,
   PrintMsgStart,
+  SpellCheckMsgStart,
   LastIPCMsgStart      // Must come last.
 };