Introducing phased profiling framework

content/child/child_thread_impl.cc

Index: content/child/child_thread_impl.cc
diff --git a/content/child/child_thread_impl.cc b/content/child/child_thread_impl.cc
index 4804194de3c6660b5a0bdefda4dcf6a110281045..7bf56562c90d476948b62db6cb710e4be2ea83f4 100644
--- a/content/child/child_thread_impl.cc
+++ b/content/child/child_thread_impl.cc
@@ -527,6 +527,8 @@ bool ChildThreadImpl::OnMessageReceived(const IPC::Message& msg) {
                         OnSetProfilerStatus)
     IPC_MESSAGE_HANDLER(ChildProcessMsg_GetChildProfilerData,
                         OnGetChildProfilerData)
+    IPC_MESSAGE_HANDLER(ChildProcessMsg_OnProfilingPhase,
+                        OnProfilingPhaseCompletion)
     IPC_MESSAGE_HANDLER(ChildProcessMsg_DumpHandles, OnDumpHandles)
     IPC_MESSAGE_HANDLER(ChildProcessMsg_SetProcessBackgrounded,
                         OnProcessBackgrounded)
@@ -566,12 +568,18 @@ void ChildThreadImpl::OnSetProfilerStatus(ThreadData::Status status) {
   ThreadData::InitializeAndSetTrackingStatus(status);
 }
 
-void ChildThreadImpl::OnGetChildProfilerData(int sequence_number) {
-  tracked_objects::ProcessDataSnapshot process_data;
-  ThreadData::Snapshot(&process_data);
+void ChildThreadImpl::OnGetChildProfilerData(int sequence_number,
+                                             int current_profiling_phase) {
+  tracked_objects::ProcessDataSnapshot process_data_snapshot;
+  ThreadData::GetProcessDataSnapshot(current_profiling_phase,
+                                     &process_data_snapshot);
 
   Send(new ChildProcessHostMsg_ChildProfilerData(sequence_number,
-                                                 process_data));
+                                                 process_data_snapshot));
+}
+
+void ChildThreadImpl::OnProfilingPhaseCompletion(int profiling_phase) {
+  ThreadData::OnProfilingPhaseCompletion(profiling_phase);
 }
 
 void ChildThreadImpl::OnDumpHandles() {