Add workaround for Mac stencil buffer leak

gpu/skia_bindings/grcontext_for_gles2_interface.h

 // Copyright (c) 2013 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 GPU_SKIA_BINDINGS_GRCONTEXT_FOR_GLES2_INTERFACE_H_
 #define GPU_SKIA_BINDINGS_GRCONTEXT_FOR_GLES2_INTERFACE_H_
 
 #include "base/macros.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
 
 class GrContext;
 
 namespace gpu {
+struct Capabilities;
+
 namespace gles2 {
 class GLES2Interface;
 }
 }
 
 namespace skia_bindings {
 
 // This class binds an offscreen GrContext to an offscreen context3d. The
 // context3d is used by the GrContext so must be valid as long as this class
 // is alive.
 class GrContextForGLES2Interface {
  public:
-  explicit GrContextForGLES2Interface(gpu::gles2::GLES2Interface* gl);
+  explicit GrContextForGLES2Interface(gpu::gles2::GLES2Interface* gl,
+                                      const gpu::Capabilities& capabilities);
   virtual ~GrContextForGLES2Interface();
 
   GrContext* get() { return gr_context_.get(); }
 
   void OnLostContext();
   void ResetContext(uint32_t state);
   void FreeGpuResources();
 
  private:
   sk_sp<class GrContext> gr_context_;
 
   DISALLOW_COPY_AND_ASSIGN(GrContextForGLES2Interface);
 };
 
 }  // namespace skia_bindings
 
 #endif  // GPU_SKIA_BINDINGS_GRCONTEXT_FOR_GLES2_INTERFACE_H_