De-client tracing.TraceController interface

mojo/common/trace_controller_impl.cc

Index: mojo/common/trace_controller_impl.cc
diff --git a/mojo/common/trace_controller_impl.cc b/mojo/common/trace_controller_impl.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2af8cc5aeb9e24c9a4df3d4aa17ee7afa71cb1bb
--- /dev/null
+++ b/mojo/common/trace_controller_impl.cc
@@ -0,0 +1,63 @@
+// Copyright 2014 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.
+
+#include "mojo/common/trace_controller_impl.h"
+
+#include "base/debug/trace_event.h"
+#include "mojo/public/cpp/application/application_connection.h"
+#include "mojo/public/cpp/application/application_impl.h"
+
+namespace mojo {
+
+TraceControllerImpl::TraceControllerImpl()
+    : binding_(this), delete_on_error_(false) {
+}
+
+TraceControllerImpl::~TraceControllerImpl() {
+}
+
+void TraceControllerImpl::Bind(
+    InterfaceRequest<tracing::TraceController> request) {
+  binding_.Bind(request.Pass());
+  delete_on_error_ = true;
+}
+
+void TraceControllerImpl::Bind(ScopedMessagePipeHandle client_handle) {
+  binding_.Bind(client_handle.Pass());
+}
+
+void TraceControllerImpl::StartTracing(
+    const String& categories,
+    tracing::TraceDataCollectorPtr collector) {
+  DCHECK(!collector_.get());
+  collector_ = collector.Pass();
+  std::string categories_str = categories.To<std::string>();
+  base::debug::TraceLog::GetInstance()->SetEnabled(
+      base::debug::CategoryFilter(categories_str),
+      base::debug::TraceLog::RECORDING_MODE,
+      base::debug::TraceOptions(base::debug::RECORD_UNTIL_FULL));
+}
+
+void TraceControllerImpl::StopTracing() {
+  base::debug::TraceLog::GetInstance()->SetDisabled();
+
+  base::debug::TraceLog::GetInstance()->Flush(
+      base::Bind(&TraceControllerImpl::SendChunk, base::Unretained(this)));
+}
+
+void TraceControllerImpl::SendChunk(
+    const scoped_refptr<base::RefCountedString>& events_str,
+    bool has_more_events) {
+  collector_->DataCollected(mojo::String(events_str->data()));
+  if (!has_more_events) {
+    collector_.reset();
+  }
+}
+
+void TraceControllerImpl::OnConnectionError() {
+  if (delete_on_error_)
+    delete this;
+}
+
+}  // namespace mojo