Update from https://crrev.com/316786

cc/resources/resource_provider.h

 // 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.
 
 #ifndef CC_RESOURCES_RESOURCE_PROVIDER_H_
 #define CC_RESOURCES_RESOURCE_PROVIDER_H_
 
 #include <deque>
 #include <set>
 #include <string>
@@ skipping 314 matching lines @@
     gfx::Size size_;
     ResourceFormat format_;
     base::ThreadChecker thread_checker_;
 
     DISALLOW_COPY_AND_ASSIGN(ScopedWriteLockGpuMemoryBuffer);
   };
 
   class CC_EXPORT ScopedWriteLockGr {
    public:
     ScopedWriteLockGr(ResourceProvider* resource_provider,
-                      ResourceProvider::ResourceId resource_id,
-                      bool use_distance_field_text,
-                      bool can_use_lcd_text,
-                      int msaa_sample_count);
+                      ResourceProvider::ResourceId resource_id);
     ~ScopedWriteLockGr();
 
-    SkSurface* get_sk_surface() { return sk_surface_.get(); }
+    void InitSkSurface(bool use_worker_context,
+                       bool use_distance_field_text,
+                       bool can_use_lcd_text,
+                       int msaa_sample_count);
+    void ReleaseSkSurface();
+
+    SkSurface* sk_surface() { return sk_surface_.get(); }
+    ResourceProvider::Resource* resource() { return resource_; }
 
    private:
     ResourceProvider* resource_provider_;
     ResourceProvider::Resource* resource_;
     base::ThreadChecker thread_checker_;
     skia::RefPtr<SkSurface> sk_surface_;
 
     DISALLOW_COPY_AND_ASSIGN(ScopedWriteLockGr);
   };
 
@@ skipping 67 matching lines @@
 
   // Copy pixels from source to destination.
   void CopyResource(ResourceId source_id, ResourceId dest_id);
 
   void WaitSyncPointIfNeeded(ResourceId id);
 
   void WaitReadLockIfNeeded(ResourceId id);
 
   static GLint GetActiveTextureUnit(gpu::gles2::GLES2Interface* gl);
 
+  OutputSurface* output_surface() { return output_surface_; }
+
  private:
   struct Resource {
     enum Origin { Internal, External, Delegated };
 
     Resource();
     ~Resource();
     Resource(unsigned texture_id,
              const gfx::Size& size,
              Origin origin,
              GLenum target,
@@ skipping 114 matching lines @@
   void LazyAllocate(Resource* resource);
 
   void BindImageForSampling(Resource* resource);
   // Binds the given GL resource to a texture target for sampling using the
   // specified filter for both minification and magnification. Returns the
   // texture target used. The resource must be locked for reading.
   GLenum BindForSampling(ResourceId resource_id, GLenum unit, GLenum filter);
 
   // Returns NULL if the output_surface_ does not have a ContextProvider.
   gpu::gles2::GLES2Interface* ContextGL() const;
-  class GrContext* GrContext() const;
+  class GrContext* GrContext(bool worker_context) const;
 
   OutputSurface* output_surface_;
   SharedBitmapManager* shared_bitmap_manager_;
   gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager_;
   BlockingTaskRunner* blocking_main_thread_task_runner_;
   bool lost_output_surface_;
   int highp_threshold_min_;
   ResourceId next_id_;
   ResourceMap resources_;
   int next_child_;
@@ skipping 76 matching lines @@
   return format_gl_data_format[format];
 }
 
 inline GLenum GLInternalFormat(ResourceFormat format) {
   return GLDataFormat(format);
 }
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_RESOURCE_PROVIDER_H_