[DevTools] Move platform/v8_inspector classes under v8_inspector namespace.

third_party/WebKit/Source/platform/v8_inspector/V8HeapProfilerAgentImpl.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 V8HeapProfilerAgentImpl_h
 #define V8HeapProfilerAgentImpl_h
 
 #include "platform/inspector_protocol/InspectorProtocol.h"
 #include "platform/v8_inspector/protocol/HeapProfiler.h"
 
 #include <v8.h>
 
-namespace blink {
+namespace v8_inspector {
 
 class V8InspectorSessionImpl;
 
-using protocol::Maybe;
+namespace protocol = blink::protocol;
+using blink::protocol::Maybe;
 
 class V8HeapProfilerAgentImpl : public protocol::HeapProfiler::Backend {
     PROTOCOL_DISALLOW_COPY(V8HeapProfilerAgentImpl);
 public:
     V8HeapProfilerAgentImpl(V8InspectorSessionImpl*, protocol::FrontendChannel*, protocol::DictionaryValue* state);
     ~V8HeapProfilerAgentImpl() override;
     void restore();
 
     void collectGarbage(ErrorString*) override;
 
@@ skipping 18 matching lines @@
     void requestHeapStatsUpdate();
     static void onTimer(void*);
 
     V8InspectorSessionImpl* m_session;
     v8::Isolate* m_isolate;
     protocol::HeapProfiler::Frontend m_frontend;
     protocol::DictionaryValue* m_state;
     bool m_hasTimer;
 };
 
-} // namespace blink
+} // namespace v8_inspector
 
 #endif // !defined(V8HeapProfilerAgentImpl_h)