cc: Plumbing for impl thread micro benchmarks

cc/debug/unittest_only_benchmark.cc

 // Copyright 2013 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 "cc/debug/unittest_only_benchmark.h"
+
+#include "base/bind.h"
+#include "base/message_loop/message_loop_proxy.h"
 #include "base/values.h"
-#include "cc/debug/unittest_only_benchmark.h"
+#include "cc/debug/unittest_only_benchmark_impl.h"
 
 namespace cc {
 
 UnittestOnlyBenchmark::UnittestOnlyBenchmark(scoped_ptr<base::Value> value,
                                              const DoneCallback& callback)
-    : MicroBenchmark(callback) {}
+    : MicroBenchmark(callback),
+      create_impl_benchmark_(false),
+      weak_ptr_factory_(this) {
+  if (!value)
+    return;
 
-UnittestOnlyBenchmark::~UnittestOnlyBenchmark() {}
+  base::DictionaryValue* settings = NULL;
+  value->GetAsDictionary(&settings);
+  if (!settings)
+    return;
+
+  if (settings->HasKey("run_benchmark_impl"))
+    settings->GetBoolean("run_benchmark_impl", &create_impl_benchmark_);
+}
+
+UnittestOnlyBenchmark::~UnittestOnlyBenchmark() {
+  weak_ptr_factory_.InvalidateWeakPtrs();
+}
 
 void UnittestOnlyBenchmark::DidUpdateLayers(LayerTreeHost* host) {
   NotifyDone(scoped_ptr<base::Value>());
 }
 
+void UnittestOnlyBenchmark::RecordImplResults(scoped_ptr<base::Value> results) {
+  NotifyDone(results.Pass());
+}
+
+scoped_ptr<MicroBenchmarkImpl> UnittestOnlyBenchmark::CreateBenchmarkImpl(
+    scoped_refptr<base::MessageLoopProxy> origin_loop) {
+  if (!create_impl_benchmark_)
+    return make_scoped_ptr<MicroBenchmarkImpl>(NULL);
+
+  return scoped_ptr<MicroBenchmarkImpl>(new UnittestOnlyBenchmarkImpl(
+      origin_loop,
+      NULL,
+      base::Bind(&UnittestOnlyBenchmark::RecordImplResults,
+                 weak_ptr_factory_.GetWeakPtr())));
+}
+
 }  // namespace cc