[DevTools] Rework idle{Started,Finished} instrumentation.

third_party/WebKit/Source/platform/v8_inspector/V8ProfilerAgentImpl.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 "platform/v8_inspector/V8ProfilerAgentImpl.h"
 
 #include "platform/v8_inspector/Atomics.h"
 #include "platform/v8_inspector/V8DebuggerImpl.h"
 #include "platform/v8_inspector/V8InspectorSessionImpl.h"
 #include "platform/v8_inspector/V8StackTraceImpl.h"
@@ skipping 274 matching lines @@
         result = createCPUProfile(m_isolate, profile);
     profile->Delete();
     return result.release();
 }
 
 bool V8ProfilerAgentImpl::isRecording() const
 {
     return m_recordingCPUProfile || !m_startedProfiles.isEmpty();
 }
 
-void V8ProfilerAgentImpl::idleFinished()
-{
-    if (!isRecording())
-        return;
-    m_isolate->GetCpuProfiler()->SetIdle(false);
-}
-
-void V8ProfilerAgentImpl::idleStarted()
-{
-    if (!isRecording())
-        return;
-    m_isolate->GetCpuProfiler()->SetIdle(true);
-}
-
 } // namespace blink