Add missing include to fix build.

gpu/skia_bindings/grcontext_for_gles2_interface.cc

 // 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.
 
 #include "gpu/skia_bindings/grcontext_for_gles2_interface.h"
 
 #include <stddef.h>
 #include <string.h>
 #include <utility>
 
 #include "base/lazy_instance.h"
 #include "base/macros.h"
 #include "base/sys_info.h"
 #include "base/trace_event/trace_event.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "gpu/command_buffer/common/capabilities.h"
 #include "gpu/skia_bindings/gl_bindings_skia_cmd_buffer.h"
 #include "third_party/skia/include/gpu/GrContext.h"
+#include "third_party/skia/include/gpu/GrContextOptions.h"
 #include "third_party/skia/include/gpu/gl/GrGLInterface.h"
 
 namespace skia_bindings {
 
 GrContextForGLES2Interface::GrContextForGLES2Interface(
     gpu::gles2::GLES2Interface* gl,
     const gpu::Capabilities& capabilities) {
   GrContextOptions options;
   options.fAvoidStencilBuffers = capabilities.avoid_stencil_buffers;
   sk_sp<GrGLInterface> interface(
@@ skipping 46 matching lines @@
 
 void GrContextForGLES2Interface::FreeGpuResources() {
   if (gr_context_) {
     TRACE_EVENT_INSTANT0("gpu", "GrContext::freeGpuResources",
                          TRACE_EVENT_SCOPE_THREAD);
     gr_context_->freeGpuResources();
   }
 }
 
 }  // namespace skia_bindings