Removed unnecessary call to initialize the COM library

to fix the crash because CoInitialize() call failed.

BUG=85589
TEST=thread_watcher unit tests
R=willchan
Review URL: http://codereview.chromium.org/7301009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@91714 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/metrics/thread_watcher.cc

@@ -649,12 +649,6 @@ void WatchDogThread::Init() {
   // This thread shouldn't be allowed to perform any blocking disk I/O.
   base::ThreadRestrictions::SetIOAllowed(false);
 
-#if defined(OS_WIN)
-  // Initializes the COM library on the current thread.
-  HRESULT result = CoInitialize(NULL);
-  CHECK(result == S_OK);
-#endif
-
   base::AutoLock lock(lock_);
   CHECK(!watchdog_thread_);
   watchdog_thread_ = this;
@@ -664,11 +658,3 @@ void WatchDogThread::CleanUp() {
   base::AutoLock lock(lock_);
   watchdog_thread_ = NULL;
 }
-
-void WatchDogThread::CleanUpAfterMessageLoopDestruction() {
-#if defined(OS_WIN)
-  // Closes the COM library on the current thread. CoInitialize must be balanced
-  // by a corresponding call to CoUninitialize.
-  CoUninitialize();
-#endif
-}

chrome/browser/metrics/thread_watcher.h

@@ -455,7 +455,6 @@ class WatchDogThread : public base::Thread {
  protected:
   virtual void Init();
   virtual void CleanUp();
-  virtual void CleanUpAfterMessageLoopDestruction();
 
  private:
   static bool PostTaskHelper(