Large wallpaper decoding in utility process

chrome/utility/chrome_content_utility_client.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_UTILITY_CHROME_CONTENT_UTILITY_CLIENT_H_
 #define CHROME_UTILITY_CHROME_CONTENT_UTILITY_CLIENT_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 14 matching lines @@
  public:
   ChromeContentUtilityClient();
   virtual ~ChromeContentUtilityClient();
 
   virtual void UtilityThreadStarted() OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   static void PreSandboxStartup();
 
   // Shared with extensions::ExtensionsHandler.
-  static void DecodeImage(const std::vector<unsigned char>& encoded_data);
+  static SkBitmap DecodeImage(const std::vector<unsigned char>& encoded_data,
+                              bool shrink_to_fit);
+  static void DecodeImageAndSend(const std::vector<unsigned char>& encoded_data,
+                                 bool shrink_to_fit);
+
+  static void set_max_ipc_message_size_for_test(int64_t max_message_size) {
+    max_ipc_message_size_ = max_message_size;
+  }
 
  private:
   // IPC message handlers.
   void OnUnpackWebResource(const std::string& resource_data);
-  void OnDecodeImage(const std::vector<unsigned char>& encoded_data);
+  void OnDecodeImage(const std::vector<unsigned char>& encoded_data,
+                     bool shrink_to_fit);
   void OnRobustJPEGDecodeImage(
       const std::vector<unsigned char>& encoded_data);
 
 #if defined(OS_CHROMEOS)
   void OnCreateZipFile(const base::FilePath& src_dir,
                        const std::vector<base::FilePath>& src_relative_paths,
                        const base::FileDescriptor& dest_fd);
 #endif  // defined(OS_CHROMEOS)
 
   void OnPatchFileBsdiff(const base::FilePath& input_file,
@@ skipping 13 matching lines @@
                             bool get_attached_images);
 #endif
 
   typedef ScopedVector<UtilityMessageHandler> Handlers;
   Handlers handlers_;
 
   // Flag to enable whitelisting.
   bool filter_messages_;
   // A list of message_ids to filter.
   std::set<int> message_id_whitelist_;
+  // Maximum IPC msg size (default to kMaximumMessageSize; override for testing)
+  static int64_t max_ipc_message_size_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeContentUtilityClient);
 };
 
 #endif  // CHROME_UTILITY_CHROME_CONTENT_UTILITY_CLIENT_H_