Revert of aura: Require explicit ownership of the Env instance.

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/location.h"
 #include "base/logging.h"
@@ skipping 904 matching lines @@
     RenderProcessHostImpl::ShutDownInProcessRenderer();
 #endif
 
   if (parts_) {
     TRACE_EVENT0("shutdown",
                  "BrowserMainLoop::Subsystem:PostMainMessageLoopRun");
     parts_->PostMainMessageLoopRun();
   }
 
 #if defined(USE_AURA)
-  env_.reset();
+  aura::Env::DeleteInstance();
 #endif
 
   trace_memory_controller_.reset();
   system_stats_monitor_.reset();
 
 #if !defined(OS_IOS)
   // Destroying the GpuProcessHostUIShims on the UI thread posts a task to
   // delete related objects on the GPU thread. This must be done before
   // stopping the GPU thread. The GPU thread will close IPC channels to renderer
   // processes so this has to happen before stopping the IO thread.
@@ skipping 198 matching lines @@
   BrowserGpuChannelHostFactory::Initialize(established_gpu_channel);
 #elif defined(USE_AURA) || defined(OS_MACOSX)
   established_gpu_channel = true;
   if (!GpuDataManagerImpl::GetInstance()->CanUseGpuBrowserCompositor() ||
       parsed_command_line_.HasSwitch(switches::kDisableGpuEarlyInit)) {
     established_gpu_channel = always_uses_gpu = false;
   }
   BrowserGpuChannelHostFactory::Initialize(established_gpu_channel);
   ImageTransportFactory::Initialize();
 #if defined(USE_AURA)
-  env_->set_context_factory(GetContextFactory());
+  if (aura::Env::GetInstance()) {
+    aura::Env::GetInstance()->set_context_factory(GetContextFactory());
+  }
 #endif  // defined(USE_AURA)
 #endif  // defined(OS_ANDROID)
 
   // Enable the GpuMemoryBuffer dump provider with IO thread affinity. Note that
   // unregistration happens on the IO thread (See
   // BrowserProcessSubThread::IOThreadPreCleanUp).
   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
       BrowserGpuMemoryBufferManager::current(), io_thread_->task_runner());
 
   {
@@ skipping 124 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.
-  env_ = 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 58 matching lines @@
   DCHECK(is_tracing_startup_);
 
   is_tracing_startup_ = false;
   TracingController::GetInstance()->DisableRecording(
       TracingController::CreateFileSink(
           startup_trace_file_,
           base::Bind(OnStoppedStartupTracing, startup_trace_file_)));
 }
 
 }  // namespace content