Break large blobs into multiple ipcs during creation.

content/renderer/renderer_webkitplatformsupport_impl.cc

 // Copyright (c) 2011 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 "content/renderer/renderer_webkitplatformsupport_impl.h"
 
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/platform_file.h"
@@ skipping 586 matching lines @@
       static_cast<uint32>(key_size_index),
       challenge.utf8(),
       GURL(url),
       &signed_public_key));
   return WebString::fromUTF8(signed_public_key);
 }
 
 //------------------------------------------------------------------------------
 
 WebBlobRegistry* RendererWebKitPlatformSupportImpl::blobRegistry() {
-  // RenderThreadImpl::current can be NULL when running some tests.
-  if (!blob_registry_.get() && RenderThreadImpl::current()) {
-    blob_registry_.reset(new WebBlobRegistryImpl(RenderThreadImpl::Get()));
+  // ChildThread::current can be NULL when running some tests.
+  if (!blob_registry_.get() && ChildThread::current()) {
+    blob_registry_.reset(new WebBlobRegistryImpl(ChildThread::current()));
   }
   return blob_registry_.get();
 }