Create CoreTabHelper, move remaining core TCW functionality into it.

chrome/browser/extensions/extension_tabs_module.cc

 // 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.
 
 #include "chrome/browser/extensions/extension_tabs_module.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/base64.h"
@@ skipping 13 matching lines @@
 #include "chrome/browser/net/url_fixer_upper.h"
 #include "chrome/browser/prefs/incognito_mode_prefs.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sessions/restore_tab_helper.h"
 #include "chrome/browser/tabs/tab_strip_model.h"
 #include "chrome/browser/translate/translate_tab_helper.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/browser_navigator.h"
 #include "chrome/browser/ui/browser_window.h"
+#include "chrome/browser/ui/snapshot_tab_helper.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/browser/ui/window_sizer.h"
 #include "chrome/browser/web_applications/web_app.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_error_utils.h"
 #include "chrome/common/extensions/extension_messages.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
@@ skipping 1396 matching lines @@
   RenderViewHost* render_view_host = tab_contents->render_view_host();
 
   // If a backing store is cached for the tab we want to capture,
   // and it can be copied into a bitmap, then use it to generate the image.
   BackingStore* backing_store = render_view_host->GetBackingStore(false);
   if (backing_store && CaptureSnapshotFromBackingStore(backing_store))
     return true;
 
   // Ask the renderer for a snapshot of the tab.
   TabContentsWrapper* wrapper = browser->GetSelectedTabContentsWrapper();
-  wrapper->CaptureSnapshot();
+  wrapper->snapshot_tab_helper()->CaptureSnapshot();
   registrar_.Add(this,
                  chrome::NOTIFICATION_TAB_SNAPSHOT_TAKEN,
                  content::Source<TabContentsWrapper>(wrapper));
   AddRef();  // Balanced in CaptureVisibleTabFunction::Observe().
 
   return true;
 }
 
 // Build the image of a tab's contents out of a backing store.
 // This may fail if we can not copy a backing store into a bitmap.
@@ skipping 154 matching lines @@
   // called for every API call the extension made.
   GotLanguage(language);
 }
 
 void DetectTabLanguageFunction::GotLanguage(const std::string& language) {
   result_.reset(Value::CreateStringValue(language.c_str()));
   SendResponse(true);
 
   Release();  // Balanced in Run()
 }