Revert 136990 - Make sure the thread calling CoCreateGuid is CoInitialized.

base/win/event_trace_controller_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Unit tests for event trace controller.
 
 #include <objbase.h>
 #include <initguid.h>
 
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/process.h"
 #include "base/scoped_temp_dir.h"
 #include "base/stringprintf.h"
 #include "base/sys_info.h"
 #include "base/win/event_trace_controller.h"
 #include "base/win/event_trace_provider.h"
 #include "base/win/scoped_handle.h"
-#include "base/win/scoped_com_initializer.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
 using base::win::EtwTraceController;
 using base::win::EtwTraceProvider;
 using base::win::EtwTraceProperties;
 
 DEFINE_GUID(kGuidNull,
     0x0000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0);
@@ skipping 91 matching lines @@
     // Allocate a new provider name GUID for each test.
     ASSERT_HRESULT_SUCCEEDED(::CoCreateGuid(&test_provider_));
   }
 
   virtual void TearDown() {
     EtwTraceProperties prop;
     EtwTraceController::Stop(session_name_.c_str(), &prop);
   }
 
  protected:
-  base::win::ScopedCOMInitializer com_initializer_;
   GUID test_provider_;
   std::wstring session_name_;
 };
 
 }  // namespace
 
 TEST_F(EtwTraceControllerTest, Initialize) {
   EtwTraceController controller;
 
   EXPECT_EQ(NULL, controller.session());
@@ skipping 86 matching lines @@
   EXPECT_EQ(kTestProviderFlags, provider.enable_flags());
 
   EXPECT_HRESULT_SUCCEEDED(controller.Stop(NULL));
 
   provider.WaitForCallback();
 
   // Session should have wound down.
   EXPECT_EQ(0, provider.enable_level());
   EXPECT_EQ(0, provider.enable_flags());
 }