Convert renderer JS memory usage reporting to use Mojo.

chrome/browser/task_manager/renderer_resource.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 "chrome/browser/task_manager/renderer_resource.h"
 
 #include "base/basictypes.h"
 #include "chrome/browser/devtools/devtools_window.h"
+#include "chrome/browser/process_resource_usage.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/task_manager/resource_provider.h"
 #include "chrome/browser/task_manager/task_manager_util.h"
 #include "chrome/common/render_messages.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
+#include "content/public/common/service_registry.h"
 
 namespace task_manager {
 
 RendererResource::RendererResource(base::ProcessHandle process,
                                    content::RenderViewHost* render_view_host)
     : process_(process),
       render_view_host_(render_view_host),
-      pending_stats_update_(false),
-      v8_memory_allocated_(0),
-      v8_memory_used_(0),
-      pending_v8_memory_allocated_update_(false) {
+      pending_stats_update_(false) {
   // We cache the process and pid as when a Tab/BackgroundContents is closed the
   // process reference becomes NULL and the TaskManager still needs it.
-  pid_ = base::GetProcId(process_);
   unique_process_id_ = render_view_host_->GetProcess()->GetID();
   memset(&stats_, 0, sizeof(stats_));
+  ResourceUsageReporterPtr service;
+  content::ServiceRegistry* service_registry =
+      render_view_host_->GetProcess()->GetServiceRegistry();
+  if (service_registry)
+    service_registry->ConnectToRemoteService(&service);
+  process_resource_usage_.reset(new ProcessResourceUsage(service.Pass()));
 }
 
 RendererResource::~RendererResource() {
 }
 
 void RendererResource::Refresh() {
   if (!pending_stats_update_) {
     render_view_host_->Send(new ChromeViewMsg_GetCacheResourceStats);
     pending_stats_update_ = true;
   }
-  if (!pending_v8_memory_allocated_update_) {
-    render_view_host_->Send(new ChromeViewMsg_GetV8HeapStats);
-    pending_v8_memory_allocated_update_ = true;
-  }
+  process_resource_usage_->Refresh(base::Closure());
 }
 
 blink::WebCache::ResourceTypeStats
 RendererResource::GetWebCoreCacheStats() const {
   return stats_;
 }
 
 size_t RendererResource::GetV8MemoryAllocated() const {
-  return v8_memory_allocated_;
+  return process_resource_usage_->GetV8MemoryAllocated();
 }
 
 size_t RendererResource::GetV8MemoryUsed() const {
-  return v8_memory_used_;
+  return process_resource_usage_->GetV8MemoryUsed();
 }
 
 void RendererResource::NotifyResourceTypeStats(
     const blink::WebCache::ResourceTypeStats& stats) {
   stats_ = stats;
   pending_stats_update_ = false;
 }
 
-void RendererResource::NotifyV8HeapStats(
-    size_t v8_memory_allocated, size_t v8_memory_used) {
-  v8_memory_allocated_ = v8_memory_allocated;
-  v8_memory_used_ = v8_memory_used;
-  pending_v8_memory_allocated_update_ = false;
-}
-
 base::string16 RendererResource::GetProfileName() const {
   return util::GetProfileNameFromInfoCache(Profile::FromBrowserContext(
       render_view_host_->GetProcess()->GetBrowserContext()));
 }
 
 base::ProcessHandle RendererResource::GetProcess() const {
   return process_;
 }
 
 int RendererResource::GetUniqueChildProcessId() const {
@@ skipping 14 matching lines @@
 
 bool RendererResource::ReportsV8MemoryStats() const {
   return true;
 }
 
 bool RendererResource::SupportNetworkUsage() const {
   return true;
 }
 
 }  // namespace task_manager