Large wallpaper decoding in utility process

chrome/browser/chromeos/extensions/wallpaper_function_base.cc

 // Copyright 2013 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/chromeos/extensions/wallpaper_function_base.h"
 
 #include "base/synchronization/cancellation_flag.h"
 #include "chrome/browser/image_decoder.h"
 #include "chrome/grit/generated_resources.h"
 #include "chromeos/login/login_state.h"
@@ skipping 38 matching lines @@
 
   void Start(const std::string& image_data) {
     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
     // This function can only be called after user login. It is fine to use
     // unsafe image decoder here. Before user login, a robust jpeg decoder will
     // be used.
     CHECK(chromeos::LoginState::Get()->IsUserLoggedIn());
     unsafe_image_decoder_ = new ImageDecoder(this, image_data,
                                              ImageDecoder::DEFAULT_CODEC);
+    unsafe_image_decoder_->set_shrink_to_fit(true);
+
     scoped_refptr<base::MessageLoopProxy> task_runner =
         BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI);
     unsafe_image_decoder_->Start(task_runner);
   }
 
   void Cancel() {
     cancel_flag_.Set();
   }
 
   virtual void OnImageDecoded(const ImageDecoder* decoder,
@@ skipping 48 matching lines @@
   unsafe_wallpaper_decoder_ = NULL;
   SetError(wallpaper_api_util::kCancelWallpaperMessage);
   SendResponse(false);
 }
 
 void WallpaperFunctionBase::OnFailure(const std::string& error) {
   unsafe_wallpaper_decoder_ = NULL;
   SetError(error);
   SendResponse(false);
 }