DevTools: CPU throttling should disable when DevTools are closed.

third_party/WebKit/Source/web/InspectorEmulationAgent.cpp

 // Copyright 2015 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 "web/InspectorEmulationAgent.h"
 
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/Settings.h"
 #include "core/page/Page.h"
@@ skipping 42 matching lines @@
     String16 emulatedMedia;
     m_state->getString(EmulationAgentState::emulatedMedia, &emulatedMedia);
     setEmulatedMedia(&error, emulatedMedia);
 }
 
 void InspectorEmulationAgent::disable(ErrorString*)
 {
     ErrorString error;
     setScriptExecutionDisabled(&error, false);
     setTouchEmulationEnabled(&error, false, protocol::Maybe<String>());
+    setCPUThrottlingRate(&error, 1);
     setEmulatedMedia(&error, String());
 }
 
 void InspectorEmulationAgent::resetPageScaleFactor(ErrorString*)
 {
     webViewImpl()->resetScaleStateImmediately();
 }
 
 void InspectorEmulationAgent::setPageScaleFactor(ErrorString*, double pageScaleFactor)
 {
@@ skipping 47 matching lines @@
     frontend()->virtualTimeBudgetExpired();
 }
 
 DEFINE_TRACE(InspectorEmulationAgent)
 {
     visitor->trace(m_webLocalFrameImpl);
     InspectorBaseAgent::trace(visitor);
 }
 
 } // namespace blink