Purge memory before suspending timer queues when backgrounded.

content/renderer/render_thread_impl.cc

 // 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.
 
 #include "content/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <utility>
@@ skipping 1111 matching lines @@
   if (command_line.HasSwitch(switches::kEnableVtune))
     gin::Debug::SetJitCodeEventHandler(vTune::GetVtuneCodeEventHandler());
 #endif
 
   SetRuntimeFeaturesDefaultsAndUpdateFromArgs(command_line);
   GetContentClient()
       ->renderer()
       ->SetRuntimeFeaturesDefaultsBeforeBlinkInitialization();
 
   blink_platform_impl_.reset(new RendererBlinkPlatformImpl(
-      renderer_scheduler_.get(),
-      GetRemoteInterfaces()->GetWeakPtr()));
+      renderer_scheduler_.get(), GetRemoteInterfaces()->GetWeakPtr(),
+      memory_coordinator_.get()));
   blink::initialize(blink_platform_impl_.get());
 
   v8::Isolate* isolate = blink::mainThreadIsolate();
   isolate->SetCreateHistogramFunction(CreateHistogram);
   isolate->SetAddHistogramSampleFunction(AddHistogramSample);
   renderer_scheduler_->SetRAILModeObserver(this);
 
   main_thread_compositor_task_runner_ =
       renderer_scheduler_->CompositorTaskRunner();
 
@@ skipping 1293 matching lines @@
   }
 }
 
 void RenderThreadImpl::OnRendererInterfaceRequest(
     mojom::RendererAssociatedRequest request) {
   DCHECK(!renderer_binding_.is_bound());
   renderer_binding_.Bind(std::move(request));
 }
 
 }  // namespace content