Create 1916 release branch for CEF3.

git-svn-id: https://chromiumembedded.googlecode.com/svn/branches/1916@1654 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef/browser/trace_subscriber.cc

@@ -0,0 +1,76 @@
+// 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.
+
+#include "libcef/browser/trace_subscriber.h"
+#include "include/cef_trace.h"
+#include "libcef/browser/thread_util.h"
+
+#include "base/debug/trace_event.h"
+#include "content/public/browser/tracing_controller.h"
+
+using content::TracingController;
+
+CefTraceSubscriber::CefTraceSubscriber()
+    : collecting_trace_data_(false),
+      weak_factory_(this) {
+  CEF_REQUIRE_UIT();
+}
+
+CefTraceSubscriber::~CefTraceSubscriber() {
+  CEF_REQUIRE_UIT();
+  if (collecting_trace_data_) {
+    TracingController::GetInstance()->DisableRecording(
+        base::FilePath(),
+        TracingController::TracingFileResultCallback());
+  }
+}
+
+bool CefTraceSubscriber::BeginTracing(
+    const std::string& categories,
+    CefRefPtr<CefCompletionCallback> callback) {
+  CEF_REQUIRE_UIT();
+
+  if (collecting_trace_data_)
+    return false;
+
+  collecting_trace_data_ = true;
+
+  TracingController::EnableRecordingDoneCallback done_callback;
+  if (callback.get())
+    done_callback = base::Bind(&CefCompletionCallback::OnComplete, callback);
+
+  TracingController::GetInstance()->EnableRecording(
+      categories, TracingController::DEFAULT_OPTIONS, done_callback);
+  return true;
+}
+
+bool CefTraceSubscriber::EndTracing(
+    const base::FilePath& tracing_file,
+    CefRefPtr<CefEndTracingCallback> callback) {
+  CEF_REQUIRE_UIT();
+
+  if (!collecting_trace_data_)
+    return false;
+
+  TracingController::TracingFileResultCallback result_callback;
+  if (callback.get()) {
+    result_callback =
+        base::Bind(&CefTraceSubscriber::OnTracingFileResult,
+                   weak_factory_.GetWeakPtr(), callback);
+  }
+
+  TracingController::GetInstance()->DisableRecording(
+      tracing_file, result_callback);
+  return true;
+}
+
+void CefTraceSubscriber::OnTracingFileResult(
+    CefRefPtr<CefEndTracingCallback> callback,
+    const base::FilePath& tracing_file) {
+  CEF_REQUIRE_UIT();
+
+  collecting_trace_data_ = false;
+
+  callback->OnEndTracingComplete(tracing_file.value());
+}