Creating a framework for suppressing pollution of the profiler data

base/run_loop.cc

Index: base/run_loop.cc
diff --git a/base/run_loop.cc b/base/run_loop.cc
index 8344aa41b1631f6946e242e9ef0efbafdee23279..c28c50c8f74dc6c22f8cd17a67c949c47a5780b7 100644
--- a/base/run_loop.cc
+++ b/base/run_loop.cc
@@ -5,6 +5,7 @@
 #include "base/run_loop.h"
 
 #include "base/bind.h"
+#include "base/tracked_objects.h"
 
 #if defined(OS_WIN)
 #include "base/message_loop/message_pump_dispatcher.h"
@@ -46,7 +47,14 @@ RunLoop::~RunLoop() {
 void RunLoop::Run() {
   if (!BeforeRun())
     return;
-  loop_->RunHandler();
+  {
+    // Use task stopwatch to exclude the loop run time from the current task, if
+    // any.
+    tracked_objects::TaskStopwatch stopwatch;
+    stopwatch.Start(tracked_objects::ThreadData::Now());
+    loop_->RunHandler();
+    stopwatch.Stop(tracked_objects::ThreadData::Now());
+  }
   AfterRun();
 }