Removal of dependencies on PlatformDevice classes.

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 1187 matching lines @@
     BackingStore* backing_store) {
 
   skia::PlatformCanvas temp_canvas;
   if (!backing_store->CopyFromBackingStore(gfx::Rect(backing_store->size()),
                                            &temp_canvas)) {
     return false;
   }
   VLOG(1) << "captureVisibleTab() got image from backing store.";
 
   SendResultFromBitmap(
-      temp_canvas.getTopPlatformDevice().accessBitmap(false));
+      skia::GetTopDevice(&temp_canvas)->accessBitmap(false));
   return true;
 }
 
 // If a backing store was not available in CaptureVisibleTabFunction::RunImpl,
 // than the renderer was asked for a snapshot.  Listen for a notification
 // that the snapshot is available.
 void CaptureVisibleTabFunction::Observe(NotificationType type,
                                         const NotificationSource& source,
                                         const NotificationDetails& details) {
   DCHECK(type == NotificationType::TAB_SNAPSHOT_TAKEN);
@@ skipping 128 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()
 }