Add ability to store hidpi theme images in data pack

chrome/browser/themes/theme_service.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 "chrome/browser/themes/theme_service.h"
 
 #include "base/bind.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/string_split.h"
 #include "base/string_util.h"
@@ skipping 318 matching lines @@
 bool ThemeService::HasCustomImage(int id) const {
   if (!HasThemeableImage(id))
     return false;
 
   if (theme_pack_)
     return theme_pack_->HasCustomImage(id);
 
   return false;
 }
 
-base::RefCountedMemory* ThemeService::GetRawData(int id) const {
+base::RefCountedMemory* ThemeService::GetRawData(
+    int id,
+    ui::ScaleFactor scale_factor) const {
   // Check to see whether we should substitute some images.
   int ntp_alternate;
   GetDisplayProperty(NTP_LOGO_ALTERNATE, &ntp_alternate);
   if (id == IDR_PRODUCT_LOGO && ntp_alternate != 0)
     id = IDR_PRODUCT_LOGO_WHITE;
 
   base::RefCountedMemory* data = NULL;
   if (theme_pack_.get())
-    data = theme_pack_->GetRawData(id);
+    data = theme_pack_->GetRawData(id, scale_factor);
   if (!data)
     data = rb_.LoadDataResourceBytes(id, ui::SCALE_FACTOR_100P);
 
   return data;
 }
 
 void ThemeService::SetTheme(const Extension* extension) {
   // Clear our image cache.
   FreePlatformCaches();
 
@@ skipping 352 matching lines @@
 void ThemeService::OnInfobarDisplayed() {
   number_of_infobars_++;
 }
 
 void ThemeService::OnInfobarDestroyed() {
   number_of_infobars_--;
 
   if (number_of_infobars_ == 0)
     RemoveUnusedThemes();
 }