Create 2272 release branch for CEF3.

git-svn-id: https://chromiumembedded.googlecode.com/svn/branches/2272@1993 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef/browser/trace_subscriber.h

@@ -0,0 +1,37 @@
+// Copyright (c) 2013 The Chromium Embedded Framework 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 CEF_LIBCEF_BROWSER_TRACE_SUBSCRIBER_H_
+#define CEF_LIBCEF_BROWSER_TRACE_SUBSCRIBER_H_
+#pragma once
+
+#include "include/cef_trace.h"
+
+#include "base/files/file_path.h"
+#include "base/memory/ref_counted_memory.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+
+// May only be accessed on the browser process UI thread.
+class CefTraceSubscriber {
+ public:
+  CefTraceSubscriber();
+  virtual ~CefTraceSubscriber();
+
+  bool BeginTracing(const std::string& categories,
+                    CefRefPtr<CefCompletionCallback> callback);
+  bool EndTracing(const base::FilePath& tracing_file,
+                  CefRefPtr<CefEndTracingCallback> callback);
+
+ private:
+  void ContinueEndTracing(CefRefPtr<CefEndTracingCallback> callback,
+                          const base::FilePath& tracing_file);
+  void OnTracingFileResult(CefRefPtr<CefEndTracingCallback> callback,
+                           const base::FilePath& tracing_file);
+
+  bool collecting_trace_data_;
+  base::WeakPtrFactory<CefTraceSubscriber> weak_factory_;
+};
+
+#endif  // CEF_LIBCEF_BROWSER_TRACE_SUBSCRIBER_H_