First fix to minimize copying of image data.

app/resource_bundle_mac.mm

 // Copyright (c) 2006-2008 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 "app/resource_bundle.h"
 
 #import <Foundation/Foundation.h>
 
 #include "app/gfx/font.h"
 #include "app/l10n_util.h"
@@ skipping 53 matching lines @@
   locale_resources_data_ = LoadResourceDataPack(@"locale");
   DCHECK(locale_resources_data_) << "failed to load locale.pak";
 }
 
 void ResourceBundle::LoadThemeResources() {
   DCHECK(theme_data_ == NULL) << "theme data already loaded!";
   theme_data_ = LoadResourceDataPack(@"theme");
   DCHECK(theme_data_) << "failed to load theme.pak";
 }
 
-/* static */
-bool ResourceBundle::LoadResourceBytes(DataHandle module, int resource_id,
-                                       std::vector<unsigned char>* bytes) {
+// static
+RefCountedStaticMemory* ResourceBundle::LoadResourceBytes(
+    DataHandle module, int resource_id) {
   DCHECK(module);
-  base::StringPiece data;
-  if (!module->Get(resource_id, &data))
-    return false;
+  base::StringPiece bytes;
+  if (!module->Get(resource_id, &bytes))
+    return NULL;
 
-  bytes->resize(data.length());
-  memcpy(&(bytes->front()), data.data(), data.length());
-
-  return true;
+  return new RefCountedStaticMemory(
+      reinterpret_cast<const unsigned char*>(bytes.data()), bytes.length());
 }
 
 base::StringPiece ResourceBundle::GetRawDataResource(int resource_id) {
   DCHECK(resources_data_);
   base::StringPiece data;
   if (!resources_data_->Get(resource_id, &data))
     return base::StringPiece();
   return data;
 }
 
@@ skipping 25 matching lines @@
 NSImage* ResourceBundle::GetNSImageNamed(int resource_id) {
   // Currently this doesn't make a cache holding these as NSImages because
   // GetBitmapNamed has a cache, and we don't want to double cache.
   SkBitmap* bitmap = GetBitmapNamed(resource_id);
   if (!bitmap)
     return nil;
 
   NSImage* nsimage = gfx::SkBitmapToNSImage(*bitmap);
   return nsimage;
 }