Move tracing component to src/components

content/components/tracing/child_trace_message_filter.cc

Index: content/components/tracing/child_trace_message_filter.cc
diff --git a/content/components/tracing/child_trace_message_filter.cc b/content/components/tracing/child_trace_message_filter.cc
deleted file mode 100644
index 453a976c2b7ffb13383f95cabf9a595020239228..0000000000000000000000000000000000000000
--- a/content/components/tracing/child_trace_message_filter.cc
+++ /dev/null
@@ -1,117 +0,0 @@
-// 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/components/tracing/child_trace_message_filter.h"
-
-#include "base/debug/trace_event.h"
-#include "base/message_loop_proxy.h"
-#include "content/components/tracing/tracing_messages.h"
-
-using base::debug::TraceLog;
-
-namespace content {
-
-ChildTraceMessageFilter::ChildTraceMessageFilter(
-    base::MessageLoopProxy* ipc_message_loop)
-    : channel_(NULL),
-      ipc_message_loop_(ipc_message_loop) {}
-
-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());
-}
-
-bool ChildTraceMessageFilter::OnMessageReceived(const IPC::Message& message) {
-  bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP(ChildTraceMessageFilter, message)
-    IPC_MESSAGE_HANDLER(TracingMsg_BeginTracing, OnBeginTracing)
-    IPC_MESSAGE_HANDLER(TracingMsg_EndTracing, OnEndTracing)
-    IPC_MESSAGE_HANDLER(TracingMsg_GetTraceBufferPercentFull,
-                        OnGetTraceBufferPercentFull)
-    IPC_MESSAGE_HANDLER(TracingMsg_SetWatchEvent, OnSetWatchEvent)
-    IPC_MESSAGE_HANDLER(TracingMsg_CancelWatchEvent, OnCancelWatchEvent)
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP()
-  return handled;
-}
-
-ChildTraceMessageFilter::~ChildTraceMessageFilter() {}
-
-void ChildTraceMessageFilter::OnBeginTracing(
-    const std::vector<std::string>& included_categories,
-    const std::vector<std::string>& excluded_categories,
-    base::TimeTicks browser_time) {
-#if defined(__native_client__)
-  // NaCl and system times are offset by a bit, so subtract some time from
-  // the captured timestamps. The value might be off by a bit due to messaging
-  // latency.
-  base::TimeDelta time_offset = base::TimeTicks::NowFromSystemTraceTime() -
-      browser_time;
-  TraceLog::GetInstance()->SetTimeOffset(time_offset);
-#endif
-  TraceLog::GetInstance()->SetEnabled(included_categories,
-                                      excluded_categories);
-}
-
-void ChildTraceMessageFilter::OnEndTracing() {
-  TraceLog::GetInstance()->SetDisabled();
-
-  // Flush will generate one or more callbacks to OnTraceDataCollected. It's
-  // important that the last OnTraceDataCollected gets called before
-  // EndTracingAck below. We are already on the IO thread, so the
-  // OnTraceDataCollected calls will not be deferred.
-  TraceLog::GetInstance()->Flush(
-      base::Bind(&ChildTraceMessageFilter::OnTraceDataCollected, this));
-
-  std::vector<std::string> categories;
-  TraceLog::GetInstance()->GetKnownCategories(&categories);
-  channel_->Send(new TracingHostMsg_EndTracingAck(categories));
-}
-
-void ChildTraceMessageFilter::OnGetTraceBufferPercentFull() {
-  float bpf = TraceLog::GetInstance()->GetBufferPercentFull();
-
-  channel_->Send(new TracingHostMsg_TraceBufferPercentFullReply(bpf));
-}
-
-void ChildTraceMessageFilter::OnSetWatchEvent(const std::string& category_name,
-                                              const std::string& event_name) {
-  TraceLog::GetInstance()->SetWatchEvent(category_name.c_str(),
-                                         event_name.c_str());
-}
-
-void ChildTraceMessageFilter::OnCancelWatchEvent() {
-  TraceLog::GetInstance()->CancelWatchEvent();
-}
-
-void ChildTraceMessageFilter::OnTraceDataCollected(
-    const scoped_refptr<base::RefCountedString>& events_str_ptr) {
-  if (!ipc_message_loop_->BelongsToCurrentThread()) {
-    ipc_message_loop_->PostTask(FROM_HERE,
-        base::Bind(&ChildTraceMessageFilter::OnTraceDataCollected, this,
-                   events_str_ptr));
-    return;
-  }
-  channel_->Send(new TracingHostMsg_TraceDataCollected(
-      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 content