Move tracing code in content\browser to content\browser\tracing now that there's a separate directo…

content/browser/trace_message_filter.h

-// 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.
-
-#ifndef CONTENT_BROWSER_TRACE_MESSAGE_FILTER_H_
-#define CONTENT_BROWSER_TRACE_MESSAGE_FILTER_H_
-
-#include <string>
-#include <vector>
-
-#include "content/public/browser/browser_message_filter.h"
-
-namespace content {
-
-// This class sends and receives trace messages on the browser process.
-// See also: trace_controller.h
-// See also: child_trace_message_filter.h
-class TraceMessageFilter : public BrowserMessageFilter {
- public:
-  TraceMessageFilter();
-
-  // BrowserMessageFilter override.
-  virtual void OnFilterAdded(IPC::Channel* channel) OVERRIDE;
-
-  // BrowserMessageFilter implementation.
-  virtual void OnChannelClosing() OVERRIDE;
-  virtual bool OnMessageReceived(const IPC::Message& message,
-                                 bool* message_was_ok) OVERRIDE;
-
-  void SendBeginTracing(const std::vector<std::string>& included_categories,
-                        const std::vector<std::string>& excluded_categories);
-  void SendEndTracing();
-  void SendGetTraceBufferPercentFull();
-  void SendSetWatchEvent(const std::string& category_name,
-                         const std::string& event_name);
-  void SendCancelWatchEvent();
-
- protected:
-  virtual ~TraceMessageFilter();
-
- private:
-  // Message handlers.
-  void OnChildSupportsTracing();
-  void OnEndTracingAck(const std::vector<std::string>& known_categories);
-  void OnTraceNotification(int notification);
-  void OnTraceBufferPercentFullReply(float percent_full);
-  void OnTraceDataCollected(const std::string& data);
-
-  // ChildTraceMessageFilter exists:
-  bool has_child_;
-
-  // Awaiting ack for previously sent SendEndTracing
-  bool is_awaiting_end_ack_;
-  // Awaiting ack for previously sent SendGetTraceBufferPercentFull
-  bool is_awaiting_buffer_percent_full_ack_;
-
-  DISALLOW_COPY_AND_ASSIGN(TraceMessageFilter);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_TRACE_MESSAGE_FILTER_H_