ozone: dri: add synchronous SwapBuffers support on surfaceless

ui/ozone/platform/dri/test/mock_dri_wrapper.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 "ui/ozone/platform/dri/test/mock_dri_wrapper.h"
 
 #include <xf86drm.h>
 #include <xf86drmMode.h>
 
 #include "base/logging.h"
@@ skipping 115 matching lines @@
   remove_framebuffer_call_count_++;
   return true;
 }
 
 ScopedDrmFramebufferPtr MockDriWrapper::GetFramebuffer(uint32_t framebuffer) {
   return ScopedDrmFramebufferPtr();
 }
 
 bool MockDriWrapper::PageFlip(uint32_t crtc_id,
                               uint32_t framebuffer,
+                              bool is_sync,
                               const PageFlipCallback& callback) {
   page_flip_call_count_++;
   current_framebuffer_ = framebuffer;
   if (page_flip_expectation_) {
     if (use_sync_flips_)
       callback.Run(0, 0, 0);
     else
       callbacks_.push(callback);
   }
 
@@ skipping 68 matching lines @@
 
 void MockDriWrapper::RunCallbacks() {
   while (!callbacks_.empty()) {
     PageFlipCallback callback = callbacks_.front();
     callbacks_.pop();
     callback.Run(0, 0, 0);
   }
 }
 
 }  // namespace ui