Revert of Further instrumentations to find jank in Windows message processing.

base/message_loop/message_pump_win.cc

Index: base/message_loop/message_pump_win.cc
diff --git a/base/message_loop/message_pump_win.cc b/base/message_loop/message_pump_win.cc
index 3e480952fc696b1120a7aea2b28f769dc62ecbd9..08f00f55eaae794ec19e6c022bed6669911ad8b3 100644
--- a/base/message_loop/message_pump_win.cc
+++ b/base/message_loop/message_pump_win.cc
@@ -321,9 +321,9 @@
 
 bool MessagePumpForUI::ProcessNextWindowsMessage() {
   // TODO(vadimt): Remove ScopedTracker below once crbug.com/440919 is fixed.
-  tracked_objects::ScopedTracker tracking_profile1(
+  tracked_objects::ScopedTracker tracking_profile(
       FROM_HERE_WITH_EXPLICIT_FUNCTION(
-          "440919 MessagePumpForUI::ProcessNextWindowsMessage1"));
+          "440919 <<MessagePumpForUI::ProcessNextWindowsMessage>>"));
 
   // If there are sent messages in the queue then PeekMessage internally
   // dispatches the message and returns false. We return true in this
@@ -334,11 +334,6 @@
   if (HIWORD(queue_status) & QS_SENDMESSAGE)
     sent_messages_in_queue = true;
 
-  // TODO(vadimt): Remove ScopedTracker below once crbug.com/440919 is fixed.
-  tracked_objects::ScopedTracker tracking_profile2(
-      FROM_HERE_WITH_EXPLICIT_FUNCTION(
-          "440919 MessagePumpForUI::ProcessNextWindowsMessage2"));
-
   MSG msg;
   if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE) != FALSE)
     return ProcessMessageHelper(msg);
@@ -348,9 +343,9 @@
 
 bool MessagePumpForUI::ProcessMessageHelper(const MSG& msg) {
   // TODO(vadimt): Remove ScopedTracker below once crbug.com/440919 is fixed.
-  tracked_objects::ScopedTracker tracking_profile1(
+  tracked_objects::ScopedTracker tracking_profile(
       FROM_HERE_WITH_EXPLICIT_FUNCTION(
-          "440919 MessagePumpForUI::ProcessMessageHelper1"));
+          "440919 MessagePumpForUI::ProcessMessageHelper"));
 
   TRACE_EVENT1("base", "MessagePumpForUI::ProcessMessageHelper",
                "message", msg.message);
@@ -366,18 +361,8 @@
   if (msg.message == kMsgHaveWork && msg.hwnd == message_hwnd_)
     return ProcessPumpReplacementMessage();
 
-  // TODO(vadimt): Remove ScopedTracker below once crbug.com/440919 is fixed.
-  tracked_objects::ScopedTracker tracking_profile2(
-      FROM_HERE_WITH_EXPLICIT_FUNCTION(
-          "440919 MessagePumpForUI::ProcessMessageHelper2"));
-
   if (CallMsgFilter(const_cast<MSG*>(&msg), kMessageFilterCode))
     return true;
-
-  // TODO(vadimt): Remove ScopedTracker below once crbug.com/440919 is fixed.
-  tracked_objects::ScopedTracker tracking_profile3(
-      FROM_HERE_WITH_EXPLICIT_FUNCTION(
-          "440919 MessagePumpForUI::ProcessMessageHelper3"));
 
   uint32_t action = MessagePumpDispatcher::POST_DISPATCH_PERFORM_DEFAULT;
   if (state_->dispatcher)
@@ -393,11 +378,6 @@
 }
 
 bool MessagePumpForUI::ProcessPumpReplacementMessage() {
-  // TODO(vadimt): Remove ScopedTracker below once crbug.com/440919 is fixed.
-  tracked_objects::ScopedTracker tracking_profile(
-      FROM_HERE_WITH_EXPLICIT_FUNCTION(
-          "440919 MessagePumpForUI::ProcessPumpReplacementMessage"));
-
   // When we encounter a kMsgHaveWork message, this method is called to peek
   // and process a replacement message, such as a WM_PAINT or WM_TIMER.  The
   // goal is to make the kMsgHaveWork as non-intrusive as possible, even though