DevTools: Initial implementation of slow CPU emulation.

content/renderer/devtools/devtools_agent.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/devtools/devtools_agent.h"
 
 #include <map>
 
 #include "base/lazy_instance.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/trace_event/trace_event.h"
 #include "content/common/devtools_messages.h"
 #include "content/common/frame_messages.h"
 #include "content/renderer/devtools/devtools_client.h"
+#include "content/renderer/devtools/devtools_cpu_throttler.h"
 #include "content/renderer/render_frame_impl.h"
 #include "content/renderer/render_widget.h"
 #include "ipc/ipc_channel.h"
 #include "third_party/WebKit/public/platform/WebPoint.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/web/WebConsoleMessage.h"
 #include "third_party/WebKit/public/web/WebDevToolsAgent.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 
 #if defined(USE_TCMALLOC)
@@ skipping 35 matching lines @@
     g_agent_for_routing_id = LAZY_INSTANCE_INITIALIZER;
 
 } //  namespace
 
 DevToolsAgent::DevToolsAgent(RenderFrameImpl* frame)
     : RenderFrameObserver(frame),
       is_attached_(false),
       is_devtools_client_(false),
       paused_in_mouse_move_(false),
       paused_(false),
-      frame_(frame) {
+      frame_(frame),
+      cpu_throttler_(new DevToolsCPUThrottler()) {
   g_agent_for_routing_id.Get()[routing_id()] = this;
   frame_->GetWebFrame()->setDevToolsAgentClient(this);
 }
 
 DevToolsAgent::~DevToolsAgent() {
   g_agent_for_routing_id.Get().erase(routing_id());
 }
 
 // Called on the Renderer thread.
 bool DevToolsAgent::OnMessageReceived(const IPC::Message& message) {
@@ skipping 58 matching lines @@
   TraceLog* trace_log = TraceLog::GetInstance();
   trace_log->SetEnabled(
       base::trace_event::TraceConfig(category_filter.utf8(), ""),
       TraceLog::RECORDING_MODE);
 }
 
 void DevToolsAgent::disableTracing() {
   TraceLog::GetInstance()->SetDisabled();
 }
 
+void DevToolsAgent::setCPUThrottlingRate(double rate) {
+  cpu_throttler_->SetThrottlingRate(rate);
+}
+
 // static
 DevToolsAgent* DevToolsAgent::FromRoutingId(int routing_id) {
   IdToAgentMap::iterator it = g_agent_for_routing_id.Get().find(routing_id);
   if (it != g_agent_for_routing_id.Get().end()) {
     return it->second;
   }
   return NULL;
 }
 
 // static
@@ skipping 119 matching lines @@
 WebDevToolsAgent* DevToolsAgent::GetWebAgent() {
   WebLocalFrame* web_frame = frame_->GetWebFrame();
   return web_frame ? web_frame->devToolsAgent() : nullptr;
 }
 
 bool DevToolsAgent::IsAttached() {
   return is_attached_;
 }
 
 }  // namespace content