Refactor Pickle Read methods to use higher performance PickleIterator.

chrome/browser/extensions/extension_browser_actions_api.cc

Index: chrome/browser/extensions/extension_browser_actions_api.cc
diff --git a/chrome/browser/extensions/extension_browser_actions_api.cc b/chrome/browser/extensions/extension_browser_actions_api.cc
index 0a37658901cf686c8ac45d251e5843be7e8aca0c..df58bfd8c33f1e6f373f782c79da93a8872142cd 100644
--- a/chrome/browser/extensions/extension_browser_actions_api.cc
+++ b/chrome/browser/extensions/extension_browser_actions_api.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -49,7 +49,7 @@ bool BrowserActionSetIconFunction::RunBrowserAction() {
   base::BinaryValue* binary = NULL;
   EXTENSION_FUNCTION_VALIDATE(details_->GetBinary("imageData", &binary));
   IPC::Message bitmap_pickle(binary->GetBuffer(), binary->GetSize());
-  void* iter = NULL;
+  PickleIterator iter(bitmap_pickle);
   SkBitmap bitmap;
   EXTENSION_FUNCTION_VALIDATE(
       IPC::ReadParam(&bitmap_pickle, &iter, &bitmap));