Gracefully handling texture creation failure

cc/output/gl_renderer.cc

 // Copyright 2010 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 "cc/output/gl_renderer.h"
 
 #include <algorithm>
 #include <limits>
 #include <set>
 #include <string>
@@ skipping 647 matching lines @@
   desc.fFlags = kRenderTarget_GrTextureFlagBit | kNoStencil_GrTextureFlagBit;
   desc.fSampleCnt = 0;
   desc.fWidth = source.width();
   desc.fHeight = source.height();
   desc.fConfig = kSkia8888_GrPixelConfig;
   desc.fOrigin = kBottomLeft_GrSurfaceOrigin;
   GrAutoScratchTexture scratch_texture(
       use_gr_context->context(), desc, GrContext::kExact_ScratchTexMatch);
   skia::RefPtr<GrTexture> backing_store =
       skia::AdoptRef(scratch_texture.detach());
+  if (backing_store.get() == NULL)
+    return SkBitmap();
 
   // Create a device and canvas using that backing store.
   SkGpuDevice device(use_gr_context->context(), backing_store.get());
   SkCanvas canvas(&device);
 
   // Draw the source bitmap through the filter to the canvas.
   SkPaint paint;
   paint.setImageFilter(filter);
   canvas.clear(SK_ColorTRANSPARENT);
 
@@ skipping 2496 matching lines @@
     context_support_->ScheduleOverlayPlane(
         overlay.plane_z_order,
         overlay.transform,
         pending_overlay_resources_.back()->texture_id(),
         overlay.display_rect,
         overlay.uv_rect);
   }
 }
 
 }  // namespace cc