Remove TraceController

content/browser/tracing/trace_controller_impl.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_TRACING_TRACE_CONTROLLER_IMPL_H_
-#define CONTENT_BROWSER_TRACING_TRACE_CONTROLLER_IMPL_H_
-
-#include <set>
-#include <string>
-#include <vector>
-
-#include "base/debug/trace_event.h"
-#include "base/lazy_instance.h"
-#include "content/public/browser/trace_controller.h"
-
-class CommandLine;
-
-namespace content {
-class TraceMessageFilter;
-
-class TraceControllerImpl : public TraceController {
- public:
-  static TraceControllerImpl* GetInstance();
-
-  // TraceController implementation:
-  virtual bool BeginTracing(TraceSubscriber* subscriber,
-                            const std::string& category_patterns,
-                            base::debug::TraceLog::Options options) OVERRIDE;
-  virtual  bool EndTracingAsync(TraceSubscriber* subscriber) OVERRIDE;
-  virtual bool GetTraceBufferPercentFullAsync(
-      TraceSubscriber* subscriber) OVERRIDE;
-  virtual bool SetWatchEvent(TraceSubscriber* subscriber,
-                             const std::string& category_name,
-                             const std::string& event_name) OVERRIDE;
-  virtual bool CancelWatchEvent(TraceSubscriber* subscriber) OVERRIDE;
-  virtual void CancelSubscriber(TraceSubscriber* subscriber) OVERRIDE;
-  virtual bool GetKnownCategoryGroupsAsync(TraceSubscriber* subscriber)
-      OVERRIDE;
-
- private:
-  typedef std::set<scoped_refptr<TraceMessageFilter> > FilterMap;
-
-  friend struct base::DefaultLazyInstanceTraits<TraceControllerImpl>;
-  friend class TraceMessageFilter;
-
-  TraceControllerImpl();
-  virtual ~TraceControllerImpl();
-
-  bool is_tracing_enabled() const {
-    return can_end_tracing();
-  }
-
-  bool can_end_tracing() const {
-    return is_tracing_ && pending_end_ack_count_ == 0;
-  }
-
-  // Can get Buffer Percent Full
-  bool can_get_buffer_percent_full() const {
-    return is_tracing_ &&
-        pending_end_ack_count_ == 0 &&
-        pending_bpf_ack_count_ == 0;
-  }
-
-  bool can_begin_tracing(TraceSubscriber* subscriber) const {
-    return !is_tracing_ &&
-        (subscriber_ == NULL || subscriber == subscriber_);
-  }
-
-  // Methods for use by TraceMessageFilter.
-
-  void AddFilter(TraceMessageFilter* filter);
-  void RemoveFilter(TraceMessageFilter* filter);
-  void OnTracingBegan(TraceSubscriber* subscriber);
-  void OnEndTracingAck(const std::vector<std::string>& known_category_groups);
-  void OnTraceDataCollected(
-      const scoped_refptr<base::RefCountedString>& events_str_ptr);
-  void OnTraceNotification(int notification);
-  void OnTraceBufferPercentFullReply(float percent_full);
-
-  // Callback of TraceLog::Flush() for the local trace.
-  void OnLocalTraceDataCollected(
-      const scoped_refptr<base::RefCountedString>& events_str_ptr,
-      bool has_more_events);
-
-  FilterMap filters_;
-  TraceSubscriber* subscriber_;
-  // Pending acks for EndTracingAsync:
-  int pending_end_ack_count_;
-  // Pending acks for GetTraceBufferPercentFullAsync:
-  int pending_bpf_ack_count_;
-  float maximum_bpf_;
-  bool is_tracing_;
-  bool is_get_category_groups_;
-  std::set<std::string> known_category_groups_;
-  std::string watch_category_;
-  std::string watch_name_;
-  base::debug::TraceLog::Options trace_options_;
-  base::debug::CategoryFilter category_filter_;
-
-  DISALLOW_COPY_AND_ASSIGN(TraceControllerImpl);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_TRACING_TRACE_CONTROLLER_IMPL_H_