Revert of Profiler-instrumentation of the startup time

chrome/app/chrome_main.cc

Index: chrome/app/chrome_main.cc
diff --git a/chrome/app/chrome_main.cc b/chrome/app/chrome_main.cc
index b80d1dfcb623f1dd8c9f7aeeedbd88ae4b25fcba..360b7e5def0c4a6700bf22110fe0ef2a7d5f356f 100644
--- a/chrome/app/chrome_main.cc
+++ b/chrome/app/chrome_main.cc
@@ -4,8 +4,6 @@
 
 #include "chrome/app/chrome_main_delegate.h"
 
-#include "base/profiler/scoped_tracker.h"
-#include "chrome/common/chrome_version_info.h"
 #include "content/public/app/content_main.h"
 
 #if defined(OS_WIN)
@@ -65,22 +63,6 @@
   params.argv = argv;
 #endif
 
-  // TODO(vadimt): Remove the switch statement below once crbug.com/453640 is
-  // fixed.
-  // Enable profiler instrumentation depending on the channel.
-  switch (chrome::VersionInfo::GetChannel()) {
-    case chrome::VersionInfo::CHANNEL_UNKNOWN:
-    case chrome::VersionInfo::CHANNEL_CANARY:
-      tracked_objects::ScopedTracker::Enable();
-      break;
-
-    case chrome::VersionInfo::CHANNEL_DEV:
-    case chrome::VersionInfo::CHANNEL_BETA:
-    case chrome::VersionInfo::CHANNEL_STABLE:
-      // Don't enable instrumentation.
-      break;
-  }
-
   int rv = content::ContentMain(params);
 
 #if defined(OS_WIN)