[UMA] Use proper C++ objects to serialize tracked_objects across process boundaries.

content/browser/profiler_controller_impl.cc

Index: content/browser/profiler_controller_impl.cc
diff --git a/content/browser/profiler_controller_impl.cc b/content/browser/profiler_controller_impl.cc
index b3e40e8a64195a5f5bfa39f51f0f6ee279c5f3ba..1bedde2caba5478c8198fcb266d5d0ec470c08cd 100644
--- a/content/browser/profiler_controller_impl.cc
+++ b/content/browser/profiler_controller_impl.cc
@@ -5,14 +5,14 @@
 #include "content/browser/profiler_controller_impl.h"
 
 #include "base/bind.h"
-#include "base/values.h"
+#include "base/tracked_objects.h"
 #include "content/common/child_process_messages.h"
 #include "content/public/browser/browser_child_process_host_iterator.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/child_process_data.h"
 #include "content/public/browser/profiler_subscriber.h"
 #include "content/public/browser/render_process_host.h"
-#include "content/public/common/process_type.h"
+#include "content/public/common/serialized_profiler_data.h"
 
 using content::BrowserChildProcessHostIterator;
 using content::BrowserThread;
@@ -43,7 +43,7 @@ void ProfilerControllerImpl::OnPendingProcesses(int sequence_number,
 
 void ProfilerControllerImpl::OnProfilerDataCollected(
     int sequence_number,
-    base::DictionaryValue* profiler_data) {
+    const SerializedProfilerData& profiler_data) {
   if (!BrowserThread::CurrentlyOn(BrowserThread::UI)) {
     BrowserThread::PostTask(
         BrowserThread::UI, FROM_HERE,
@@ -65,9 +65,9 @@ void ProfilerControllerImpl::Register(ProfilerSubscriber* subscriber) {
   subscriber_ = subscriber;
 }
 
-void ProfilerControllerImpl::Unregister(ProfilerSubscriber* subscriber) {
-  if (subscriber == subscriber_)
-    subscriber_ = NULL;
+void ProfilerControllerImpl::Unregister(const ProfilerSubscriber* subscriber) {
+  DCHECK_EQ(subscriber_, subscriber);
+  subscriber_ = NULL;
 }
 
 void ProfilerControllerImpl::GetProfilerDataFromChildProcesses(
@@ -76,11 +76,9 @@ void ProfilerControllerImpl::GetProfilerDataFromChildProcesses(
 
   int pending_processes = 0;
   for (BrowserChildProcessHostIterator iter; !iter.Done(); ++iter) {
-    const std::string process_type =
-        content::GetProcessTypeNameInEnglish(iter.GetData().type);
     ++pending_processes;
     if (!iter.Send(new ChildProcessMsg_GetChildProfilerData(
-            sequence_number, process_type))) {
+            sequence_number, iter.GetData().type))) {
       --pending_processes;
     }
   }
@@ -100,14 +98,11 @@ void ProfilerControllerImpl::GetProfilerData(int sequence_number) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   int pending_processes = 0;
-  const std::string render_process_type =
-      content::GetProcessTypeNameInEnglish(content::PROCESS_TYPE_RENDERER);
-
   for (RenderProcessHost::iterator it(RenderProcessHost::AllHostsIterator());
        !it.IsAtEnd(); it.Advance()) {
     ++pending_processes;
     if (!it.GetCurrentValue()->Send(new ChildProcessMsg_GetChildProfilerData(
-        sequence_number, render_process_type))) {
+        sequence_number, content::PROCESS_TYPE_RENDERER))) {
       --pending_processes;
     }
   }
@@ -121,29 +116,4 @@ void ProfilerControllerImpl::GetProfilerData(int sequence_number) {
                  sequence_number));
 }
 
-void ProfilerControllerImpl::SetProfilerStatusInChildProcesses(
-    tracked_objects::ThreadData::Status status) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-
-  for (BrowserChildProcessHostIterator iter; !iter.Done(); ++iter)
-    iter.Send(new ChildProcessMsg_SetProfilerStatus(status));
-}
-
-void ProfilerControllerImpl::SetProfilerStatus(
-    tracked_objects::ThreadData::Status status) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-
-  BrowserThread::PostTask(
-      BrowserThread::IO,
-      FROM_HERE,
-      base::Bind(&ProfilerControllerImpl::SetProfilerStatusInChildProcesses,
-                 base::Unretained(this),
-                 status));
-
-  for (content::RenderProcessHost::iterator it(
-          content::RenderProcessHost::AllHostsIterator());
-       !it.IsAtEnd(); it.Advance()) {
-    it.GetCurrentValue()->Send(new ChildProcessMsg_SetProfilerStatus(status));
-  }
-}
 }  // namespace content