[Tracing Clock Sync] Add TracingAgent interface in Chrome

chromeos/dbus/fake_debug_daemon_client.cc

 // Copyright 2013 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 "chromeos/dbus/fake_debug_daemon_client.h"
 
 #include <map>
 #include <string>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/thread_task_runner_handle.h"
 #include "chromeos/chromeos_switches.h"
 
+namespace {
+
+const char kCrOSTracingAgentName[] = "cros";
+const char kCrOSTraceLabel[] = "systemTraceEvents";
+
+}  // namespace
+
 namespace chromeos {
 
 FakeDebugDaemonClient::FakeDebugDaemonClient()
     : featues_mask_(DebugDaemonClient::DEV_FEATURE_NONE),
       service_is_available_(true) {
 }
 
 FakeDebugDaemonClient::~FakeDebugDaemonClient() {}
 
 void FakeDebugDaemonClient::Init(dbus::Bus* bus) {}
 
 void FakeDebugDaemonClient::DumpDebugLogs(
     bool is_compressed,
     base::File file,
     scoped_refptr<base::TaskRunner> task_runner,
     const GetDebugLogsCallback& callback) {
   callback.Run(true);
 }
 
 void FakeDebugDaemonClient::SetDebugMode(const std::string& subsystem,
                                          const SetDebugModeCallback& callback) {
   callback.Run(false);
 }
-void FakeDebugDaemonClient::StartSystemTracing() {}
 
-bool FakeDebugDaemonClient::RequestStopSystemTracing(
-    scoped_refptr<base::TaskRunner> task_runner,
-    const StopSystemTracingCallback& callback) {
-  std::string no_data;
-  callback.Run(base::RefCountedString::TakeString(&no_data));
+std::string FakeDebugDaemonClient::GetTracingAgentName() {
+  return kCrOSTracingAgentName;
+}
+
+std::string FakeDebugDaemonClient::GetTraceEventLabel() {
+  return kCrOSTraceLabel;
+}
+
+bool FakeDebugDaemonClient::StartAgentTracing(
+    const base::trace_event::TraceConfig& trace_config) {
   return true;
 }
 
+void FakeDebugDaemonClient::StopAgentTracing(
+    const StopAgentTracingCallback& callback) {
+  std::string no_data;
+  callback.Run(GetTracingAgentName(), GetTraceEventLabel(),
+               base::RefCountedString::TakeString(&no_data));
+}
+
+void FakeDebugDaemonClient::SetStopAgentTracingTaskRunner(
+    scoped_refptr<base::TaskRunner> task_runner) {}
+
 void FakeDebugDaemonClient::GetRoutes(bool numeric,
                                       bool ipv6,
                                       const GetRoutesCallback& callback) {
   std::vector<std::string> empty;
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE, base::Bind(callback, false, empty));
 }
 
 void FakeDebugDaemonClient::GetNetworkStatus(
     const GetNetworkStatusCallback& callback) {
@@ skipping 114 matching lines @@
   if (!is_available)
     return;
 
   std::vector<WaitForServiceToBeAvailableCallback> callbacks;
   callbacks.swap(pending_wait_for_service_to_be_available_callbacks_);
   for (size_t i = 0; i < callbacks.size(); ++i)
     callbacks[i].Run(is_available);
 }
 
 }  // namespace chromeos