Add a Content API around TracingController.

content/browser/trace_message_filter.cc

 // Copyright (c) 2012 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 "content/browser/trace_message_filter.h"
 
-#include "content/browser/trace_controller.h"
+#include "content/browser/trace_controller_impl.h"
 #include "content/common/child_process_messages.h"
 
 using content::BrowserMessageFilter;
 using content::BrowserThread;
+using content::TraceControllerImpl;
 
 TraceMessageFilter::TraceMessageFilter() :
     has_child_(false),
     is_awaiting_end_ack_(false),
     is_awaiting_bpf_ack_(false) {
 }
 
 TraceMessageFilter::~TraceMessageFilter() {
 }
 
 void TraceMessageFilter::OnFilterAdded(IPC::Channel* channel) {
   // Always on IO thread (BrowserMessageFilter guarantee).
   BrowserMessageFilter::OnFilterAdded(channel);
 }
 
 void TraceMessageFilter::OnChannelClosing() {
   // Always on IO thread (BrowserMessageFilter guarantee).
   BrowserMessageFilter::OnChannelClosing();
 
   if (has_child_) {
     if (is_awaiting_bpf_ack_)
       OnEndTracingAck(std::vector<std::string>());
 
     if (is_awaiting_end_ack_)
       OnTraceBufferPercentFullReply(0.0f);
 
-    TraceController::GetInstance()->RemoveFilter(this);
+    TraceControllerImpl::GetInstance()->RemoveFilter(this);
   }
 }
 
 bool TraceMessageFilter::OnMessageReceived(const IPC::Message& message,
                                            bool* message_was_ok) {
   // Always on IO thread (BrowserMessageFilter guarantee).
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP_EX(TraceMessageFilter, message, *message_was_ok)
     IPC_MESSAGE_HANDLER(ChildProcessHostMsg_ChildSupportsTracing,
                         OnChildSupportsTracing)
@@ skipping 26 matching lines @@
 
 void TraceMessageFilter::SendGetTraceBufferPercentFull() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!is_awaiting_bpf_ack_);
   is_awaiting_bpf_ack_ = true;
   Send(new ChildProcessMsg_GetTraceBufferPercentFull);
 }
 
 void TraceMessageFilter::OnChildSupportsTracing() {
   has_child_ = true;
-  TraceController::GetInstance()->AddFilter(this);
+  TraceControllerImpl::GetInstance()->AddFilter(this);
 }
 
 void TraceMessageFilter::OnEndTracingAck(
     const std::vector<std::string>& known_categories) {
   // is_awaiting_end_ack_ should always be true here, but check in case the
   // child process is compromised.
   if (is_awaiting_end_ack_) {
     is_awaiting_end_ack_ = false;
-    TraceController::GetInstance()->OnEndTracingAck(known_categories);
+    TraceControllerImpl::GetInstance()->OnEndTracingAck(known_categories);
   }
 }
 
 void TraceMessageFilter::OnTraceDataCollected(const std::string& data) {
   scoped_refptr<base::RefCountedString> data_ptr(new base::RefCountedString());
   data_ptr->data() = data;
-  TraceController::GetInstance()->OnTraceDataCollected(data_ptr);
+  TraceControllerImpl::GetInstance()->OnTraceDataCollected(data_ptr);
 }
 
 void TraceMessageFilter::OnTraceBufferFull() {
-  TraceController::GetInstance()->OnTraceBufferFull();
+  TraceControllerImpl::GetInstance()->OnTraceBufferFull();
 }
 
 void TraceMessageFilter::OnTraceBufferPercentFullReply(float percent_full) {
   if (is_awaiting_bpf_ack_) {
     is_awaiting_bpf_ack_ = false;
-    TraceController::GetInstance()->OnTraceBufferPercentFullReply(
+    TraceControllerImpl::GetInstance()->OnTraceBufferPercentFullReply(
         percent_full);
   }
 }