[cc] Fix CompositorFrameSinkSupport BeginFrameAck interface.

content/browser/frame_host/render_widget_host_view_guest_unittest.cc

 // Copyright 2014 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 "content/browser/frame_host/render_widget_host_view_guest.h"
 
 #include <stdint.h>
 #include <utility>
 
 #include "base/macros.h"
@@ skipping 199 matching lines @@
  private:
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewGuestSurfaceTest);
 };
 
 namespace {
 cc::CompositorFrame CreateDelegatedFrame(float scale_factor,
                                          gfx::Size size,
                                          const gfx::Rect& damage) {
   cc::CompositorFrame frame;
   frame.metadata.device_scale_factor = scale_factor;
+  frame.metadata.begin_frame_ack = cc::BeginFrameAck(0, 1, 1, 0, true);
 
   std::unique_ptr<cc::RenderPass> pass = cc::RenderPass::Create();
   pass->SetNew(1, gfx::Rect(size), damage, gfx::Transform());
   frame.render_pass_list.push_back(std::move(pass));
   return frame;
 }
 }  // anonymous namespace
 
 TEST_F(RenderWidgetHostViewGuestSurfaceTest, TestGuestSurface) {
   gfx::Size view_size(100, 100);
@@ skipping 57 matching lines @@
 
   view_->OnSwapCompositorFrame(
       0, local_surface_id,
       CreateDelegatedFrame(scale_factor, view_size, view_rect));
   // Since guest is not attached, the CompositorFrame must be processed but the
   // frame must be evicted to return the resources immediately.
   EXPECT_FALSE(view_->has_frame());
 }
 
 }  // namespace content