Tag some of Mojo heap allocations for the heap profiler.

mojo/edk/js/drain_data.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 "mojo/edk/js/drain_data.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "gin/array_buffer.h"
 #include "gin/converter.h"
 #include "gin/dictionary.h"
 #include "gin/per_context_data.h"
 #include "gin/per_isolate_data.h"
 #include "mojo/public/cpp/system/core.h"
 
 namespace mojo {
 namespace edk {
 namespace js {
 
 DrainData::DrainData(v8::Isolate* isolate, mojo::Handle handle)
-    : isolate_(isolate), handle_(DataPipeConsumerHandle(handle.value())) {
+    : isolate_(isolate),
+      handle_(DataPipeConsumerHandle(handle.value())),
+      handle_watcher_(FROM_HERE) {
   v8::Handle<v8::Context> context(isolate_->GetCurrentContext());
   runner_ = gin::PerContextData::From(context)->runner()->GetWeakPtr();
 
   WaitForData();
 }
 
 v8::Handle<v8::Value> DrainData::GetPromise() {
   CHECK(resolver_.IsEmpty());
   v8::Handle<v8::Promise::Resolver> resolver(
       v8::Promise::Resolver::New(isolate_));
@@ skipping 83 matching lines @@
     resolver->Resolve(settled_value);
   else
     resolver->Reject(settled_value);
 
   delete this;
 }
 
 }  // namespace js
 }  // namespace edk
 }  // namespace mojo