Add scale factor and 2x resources from webkit and plumb through to ContentClient.

content/shell/shell_content_client.cc

 // Copyright (c) 2012 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 "content/shell/shell_content_client.h"
 
 #include "base/string_piece.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "webkit/glue/user_agent.h"
 
@@ skipping 38 matching lines @@
 }
 
 string16 ShellContentClient::GetLocalizedString(int message_id) const {
   return string16();
 }
 
 base::StringPiece ShellContentClient::GetDataResource(int resource_id) const {
   return ResourceBundle::GetSharedInstance().GetRawDataResource(resource_id);
 }
 
+base::StringPiece ShellContentClient::GetImageResource(
+    int resource_id,
+    float scale_factor) const {
+  // TODO(flackr): Pass scale_factor to ResourceBundle to get best matching
+  // image resource for the given scale factor.
+  return ResourceBundle::GetSharedInstance().GetRawDataResource(resource_id);
+}
+
 #if defined(OS_WIN)
 bool ShellContentClient::SandboxPlugin(CommandLine* command_line,
                                        sandbox::TargetPolicy* policy) {
   return false;
 }
 #endif
 
 #if defined(OS_MACOSX)
 bool ShellContentClient::GetSandboxProfileForSandboxType(
     int sandbox_type,
     int* sandbox_profile_resource_id) const {
   return false;
 }
 #endif
 
 }  // namespace content