Remove TraceController

components/tracing/child_trace_message_filter.cc

Index: components/tracing/child_trace_message_filter.cc
diff --git a/components/tracing/child_trace_message_filter.cc b/components/tracing/child_trace_message_filter.cc
index 9b0fa81ea84ff4845d1198fe1e966237b6a7f9cf..7243566375edd2b6c7b5c0e20a1151dfbf8732bb 100644
--- a/components/tracing/child_trace_message_filter.cc
+++ b/components/tracing/child_trace_message_filter.cc
@@ -19,14 +19,11 @@ ChildTraceMessageFilter::ChildTraceMessageFilter(
 
 void ChildTraceMessageFilter::OnFilterAdded(IPC::Channel* channel) {
   channel_ = channel;
-  TraceLog::GetInstance()->SetNotificationCallback(
-      base::Bind(&ChildTraceMessageFilter::OnTraceNotification, this));
   channel_->Send(new TracingHostMsg_ChildSupportsTracing());
 }
 
 void ChildTraceMessageFilter::OnFilterRemoved() {
-  TraceLog::GetInstance()->SetNotificationCallback(
-      TraceLog::NotificationCallback());
+  channel_ = NULL;
 }
 
 bool ChildTraceMessageFilter::OnMessageReceived(const IPC::Message& message) {
@@ -113,14 +110,24 @@ void ChildTraceMessageFilter::OnGetTraceBufferPercentFull() {
 
 void ChildTraceMessageFilter::OnSetWatchEvent(const std::string& category_name,
                                               const std::string& event_name) {
-  TraceLog::GetInstance()->SetWatchEvent(category_name.c_str(),
-                                         event_name.c_str());
+  TraceLog::GetInstance()->SetWatchEvent(
+      category_name.c_str(), event_name.c_str(),
+      base::Bind(&ChildTraceMessageFilter::OnWatchEventMatched, this));
 }
 
 void ChildTraceMessageFilter::OnCancelWatchEvent() {
   TraceLog::GetInstance()->CancelWatchEvent();
 }
 
+void ChildTraceMessageFilter::OnWatchEventMatched() {
+  if (!ipc_message_loop_->BelongsToCurrentThread()) {
+    ipc_message_loop_->PostTask(FROM_HERE,
+        base::Bind(&ChildTraceMessageFilter::OnWatchEventMatched, this));
+    return;
+  }
+  channel_->Send(new TracingHostMsg_WatchEventMatched);
+}
+
 void ChildTraceMessageFilter::OnTraceDataCollected(
     const scoped_refptr<base::RefCountedString>& events_str_ptr,
     bool has_more_events) {
@@ -157,14 +164,4 @@ void ChildTraceMessageFilter::OnMonitoringTraceDataCollected(
       events_str_ptr->data()));
 }
 
-void ChildTraceMessageFilter::OnTraceNotification(int notification) {
-  if (!ipc_message_loop_->BelongsToCurrentThread()) {
-    ipc_message_loop_->PostTask(FROM_HERE,
-        base::Bind(&ChildTraceMessageFilter::OnTraceNotification, this,
-                   notification));
-    return;
-  }
-  channel_->Send(new TracingHostMsg_TraceNotification(notification));
-}
-
 }  // namespace tracing