Fix crashes when NinePatchLayer doesn't have a resource.

cc/layers/nine_patch_layer.cc

 // Copyright 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 "cc/layers/nine_patch_layer.h"
 
 #include "cc/layers/nine_patch_layer_impl.h"
 #include "cc/resources/prioritized_resource.h"
 #include "cc/resources/resource_update.h"
 #include "cc/resources/resource_update_queue.h"
@@ skipping 54 matching lines @@
     gfx::Rect content_rect(0, 0, bitmap_.width(), bitmap_.height());
     ResourceUpdate upload = ResourceUpdate::Create(resource_->texture(),
                                                    &bitmap_,
                                                    content_rect,
                                                    content_rect,
                                                    gfx::Vector2d());
     queue->AppendFullUpload(upload);
     bitmap_dirty_ = false;
     updated = true;
   }
+
+  // NinePatchLayer must push properties every commit to make sure
+  // NinePatchLayerImpl::resource_id_ is valid.
+  // http://crbug.com/276482
+  needs_push_properties_ = true;

[danakj, 2013/08/20 18:18:04]

Cool, just move this to the end of PushPropertiesTo() instead of doing it in
Update(), and this LGTM.

   return updated;
 }
 
 void NinePatchLayer::CreateUpdaterIfNeeded() {
   if (updater_.get())
     return;
 
   updater_ = ImageLayerUpdater::Create();
 }
 
@@ skipping 22 matching lines @@
 
   if (resource_) {
     DCHECK(!bitmap_.isNull());
     layer_impl->SetResourceId(resource_->texture()->resource_id());
     layer_impl->SetLayout(
         gfx::Size(bitmap_.width(), bitmap_.height()), image_aperture_);
   }
 }
 
 }  // namespace cc