Added ROBUST_PNG_CODEC to ImageDecoder

chrome/browser/image_decoder.h

 // 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.
 
 #ifndef CHROME_BROWSER_IMAGE_DECODER_H_
 #define CHROME_BROWSER_IMAGE_DECODER_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 52 matching lines @@
     // the image has been decoded.
     const scoped_refptr<base::SequencedTaskRunner> task_runner_;
 
     base::SequenceChecker sequence_checker_;
   };
 
   enum ImageCodec {
     DEFAULT_CODEC = 0,  // Uses WebKit image decoding (via WebImage).
 #if defined(OS_CHROMEOS)
     ROBUST_JPEG_CODEC,  // Restrict decoding to robust jpeg codec.
+    ROBUST_PNG_CODEC,  // Restrict decoding to robust PNG codec.
 #endif  // defined(OS_CHROMEOS)
   };
 
   // Calls StartWithOptions() with ImageCodec::DEFAULT_CODEC and
   // shrink_to_fit = false.
   static void Start(ImageRequest* image_request,
                     const std::string& image_data);
 
   // Starts asynchronous image decoding. Once finished, the callback will be
   // posted back to image_request's |task_runner_|.
@@ skipping 68 matching lines @@
   base::WeakPtr<content::UtilityProcessHost> utility_process_host_;
 
   // Calls StopBatchMode() after |kBatchModeTimeoutSeconds| have elapsed,
   // unless a new decoding request resets the timer.
   scoped_ptr<base::DelayTimer> batch_mode_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(ImageDecoder);
 };
 
 #endif  // CHROME_BROWSER_IMAGE_DECODER_H_