[DevTools] Follow up with cleanups for InjectedScript::Scope.

third_party/WebKit/Source/platform/v8_inspector/MuteConsoleScope.h

-// Copyright 2016 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.
-
-#ifndef MuteConsoleScope_h
-#define MuteConsoleScope_h
-
-#include "platform/inspector_protocol/Allocator.h"
-#include "platform/v8_inspector/V8DebuggerImpl.h"
-#include "platform/v8_inspector/public/V8DebuggerClient.h"
-
-namespace blink {
-
-class MuteConsoleScope {
-    PROTOCOL_DISALLOW_COPY(MuteConsoleScope);
-public:
-    explicit MuteConsoleScope(V8DebuggerImpl* debugger)
-        : m_debugger(debugger)
-    {
-        if (m_debugger)
-            m_debugger->client()->muteConsole();
-    }
-
-    ~MuteConsoleScope()
-    {
-        if (m_debugger)
-            m_debugger->client()->unmuteConsole();
-    }
-
-private:
-    V8DebuggerImpl* m_debugger;
-};
-
-} // namespace blink
-
-#endif // MuteConsoleScope_h