Tag some of Mojo heap allocations for the heap profiler.

content/child/web_data_consumer_handle_impl.cc

 // Copyright 2014 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/child/web_data_consumer_handle_impl.h"
 
 #include <stdint.h>
 
 #include <limits>
 #include <utility>
@@ skipping 19 matching lines @@
   friend class base::RefCountedThreadSafe<Context>;
   ~Context() {}
   Handle handle_;
 
   DISALLOW_COPY_AND_ASSIGN(Context);
 };
 
 WebDataConsumerHandleImpl::ReaderImpl::ReaderImpl(
     scoped_refptr<Context> context,
     Client* client)
-    : context_(context), client_(client) {
+    : context_(context), handle_watcher_(FROM_HERE), client_(client) {
   if (client_)
     StartWatching();
 }
 
 WebDataConsumerHandleImpl::ReaderImpl::~ReaderImpl() {
 }
 
 Result WebDataConsumerHandleImpl::ReaderImpl::read(void* data,
                                                    size_t size,
                                                    Flags flags,
@@ skipping 98 matching lines @@
 std::unique_ptr<blink::WebDataConsumerHandle::Reader>
 WebDataConsumerHandleImpl::obtainReader(Client* client) {
   return base::WrapUnique(new ReaderImpl(context_, client));
 }
 
 const char* WebDataConsumerHandleImpl::debugName() const {
   return "WebDataConsumerHandleImpl";
 }
 
 }  // namespace content