Create 1453 release branch for CEF3.

git-svn-id: https://chromiumembedded.googlecode.com/svn/branches/1453@1183 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

cef3/libcef/browser/trace_subscriber.h

@@ -0,0 +1,38 @@
+// Copyright (c) 2012 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/debug/trace_event.h"
+#include "base/files/file_path.h"
+#include "base/memory/scoped_ptr.h"
+#include "content/public/browser/trace_subscriber.h"
+
+// May only be accessed on the browser process UI thread.
+class CefTraceSubscriber : public content::TraceSubscriber {
+ public:
+  CefTraceSubscriber();
+  virtual ~CefTraceSubscriber();
+
+  bool BeginTracing(CefRefPtr<CefTraceClient> client,
+                    const std::string& categories);
+  bool GetTraceBufferPercentFullAsync();
+  bool EndTracingAsync();
+
+ private:
+  // content::TraceSubscriber methods:
+  virtual void OnTraceDataCollected(
+      const scoped_refptr<base::RefCountedString>& trace_fragment) OVERRIDE;
+  virtual void OnTraceBufferPercentFullReply(float percent_full) OVERRIDE;
+  virtual void OnEndTracingComplete() OVERRIDE;
+
+  bool collecting_trace_data_;
+  CefRefPtr<CefTraceClient> client_;
+};
+
+#endif  // CEF_LIBCEF_BROWSER_TRACE_SUBSCRIBER_H_