Makes PlatformEventSource creation in Env conditional

content/browser/browser_main_loop.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.
 
 #include "content/browser/browser_main_loop.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/file_util.h"
@@ skipping 1052 matching lines @@
 
 #if defined(USE_AURA)
 
 #if defined(USE_X11)
   if (!gfx::GetXDisplay())
     return false;
 #endif
 
   // Env creates the compositor. Aura widgets need the compositor to be created
   // before they can be initialized by the browser.
-  aura::Env::CreateInstance();
+  aura::Env::CreateInstance(true);
 #endif  // defined(USE_AURA)
 
   if (parts_)
     parts_->ToolkitInitialized();
 
   return true;
 }
 
 void BrowserMainLoop::MainMessageLoopRun() {
 #if defined(OS_ANDROID)
@@ skipping 46 matching lines @@
       base::TimeDelta::FromSeconds(delay_secs));
 }
 
 void BrowserMainLoop::EndStartupTracing(const base::FilePath& trace_file) {
   is_tracing_startup_ = false;
   TracingController::GetInstance()->DisableRecording(
       trace_file, base::Bind(&OnStoppedStartupTracing));
 }
 
 }  // namespace content