Android: Handle readback helper context init failure

content/browser/renderer_host/render_widget_host_view_android.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/renderer_host/render_widget_host_view_android.h"
 
 #include <android/bitmap.h>
 
 #include "base/android/build_info.h"
 #include "base/basictypes.h"
@@ skipping 172 matching lines @@
   limits.max_transfer_buffer_size = std::min(
       3 * full_screen_texture_size_in_bytes, kDefaultMaxTransferBufferSize);
   limits.mapped_memory_reclaim_limit =
       WebGraphicsContext3DCommandBufferImpl::kNoLimit;
   bool lose_context_when_out_of_memory = false;
   scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context(
       new WebGraphicsContext3DCommandBufferImpl(
           0,  // offscreen
           url, gpu_channel_host.get(), attrs, lose_context_when_out_of_memory,
           limits, nullptr));
-  if (context->InitializeOnCurrentThread())
+  if (context->InitializeOnCurrentThread()) {
     context->pushGroupMarkerEXT(
         base::StringPrintf("CmdBufferImageTransportFactory-%p",
                            context.get()).c_str());
+  } else {
+    context.reset();
+  }
+
   return context.Pass();
 }
 
 // This can only be used for readback postprocessing. It may return null if the
 // channel was lost and not reestablished yet.
 GLHelper* GetPostReadbackGLHelper() {
   static GLHelperHolder* g_readback_helper_holder = nullptr;
 
   if (g_readback_helper_holder && g_readback_helper_holder->IsLost()) {
     delete g_readback_helper_holder;
@@ skipping 1680 matching lines @@
   results->orientationAngle = display.RotationAsDegree();
   results->orientationType =
       RenderWidgetHostViewBase::GetOrientationTypeForMobile(display);
   gfx::DeviceDisplayInfo info;
   results->depth = info.GetBitsPerPixel();
   results->depthPerComponent = info.GetBitsPerComponent();
   results->isMonochrome = (results->depthPerComponent == 0);
 }
 
 } // namespace content