cc: Add OutputSurface state snapshots.

content/browser/compositor/browser_compositor_output_surface.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/compositor/browser_compositor_output_surface.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "cc/output/output_surface_client.h"
 #include "cc/scheduler/begin_frame_source.h"
 #include "components/display_compositor/compositor_overlay_candidate_validator.h"
 #include "content/browser/compositor/reflector_impl.h"
 #include "services/ui/public/cpp/gpu/context_provider_command_buffer.h"
 
 namespace content {
 
 BrowserCompositorOutputSurface::BrowserCompositorOutputSurface(
     scoped_refptr<cc::ContextProvider> context_provider,
     const UpdateVSyncParametersCallback& update_vsync_parameters_callback,
     std::unique_ptr<display_compositor::CompositorOverlayCandidateValidator>
         overlay_candidate_validator)
     : OutputSurface(std::move(context_provider)),
-      update_vsync_parameters_callback_(update_vsync_parameters_callback),
       reflector_(nullptr) {
   overlay_candidate_validator_ = std::move(overlay_candidate_validator);
+  update_vsync_parameters_callback_ = base::Bind(
+      &BrowserCompositorOutputSurface::OnUpdateVSyncParametersFromGpu,
+      base::Unretained(this), update_vsync_parameters_callback);
 }
 
 BrowserCompositorOutputSurface::BrowserCompositorOutputSurface(
     std::unique_ptr<cc::SoftwareOutputDevice> software_device,
     const UpdateVSyncParametersCallback& update_vsync_parameters_callback)
-    : OutputSurface(std::move(software_device)),
-      update_vsync_parameters_callback_(update_vsync_parameters_callback),
-      reflector_(nullptr) {}
+    : OutputSurface(std::move(software_device)), reflector_(nullptr) {
+  update_vsync_parameters_callback_ = base::Bind(
+      &BrowserCompositorOutputSurface::OnUpdateVSyncParametersFromGpu,
+      base::Unretained(this), update_vsync_parameters_callback);
+}
 
 BrowserCompositorOutputSurface::BrowserCompositorOutputSurface(
     const scoped_refptr<cc::VulkanContextProvider>& vulkan_context_provider,
     const UpdateVSyncParametersCallback& update_vsync_parameters_callback)
-    : OutputSurface(std::move(vulkan_context_provider)),
-      update_vsync_parameters_callback_(update_vsync_parameters_callback),
-      reflector_(nullptr) {}
+    : OutputSurface(std::move(vulkan_context_provider)), reflector_(nullptr) {
+  update_vsync_parameters_callback_ = base::Bind(
+      &BrowserCompositorOutputSurface::OnUpdateVSyncParametersFromGpu,
+      base::Unretained(this), update_vsync_parameters_callback);
+}
 
 BrowserCompositorOutputSurface::~BrowserCompositorOutputSurface() {
   if (reflector_)
     reflector_->DetachFromOutputSurface();
   DCHECK(!reflector_);
 }
 
+void BrowserCompositorOutputSurface::OnUpdateVSyncParametersFromGpu(
+    const UpdateVSyncParametersCallback& callback,
+    base::TimeTicks timebase,
+    base::TimeDelta interval) {
+  last_vsync_timebase_ = timebase;
+  callback.Run(timebase, interval);
+}
+
 void BrowserCompositorOutputSurface::SetReflector(ReflectorImpl* reflector) {
   // Software mirroring is done by doing a GL copy out of the framebuffer - if
   // we have overlays then that data will be missing.
   if (overlay_candidate_validator_) {
     overlay_candidate_validator_->SetSoftwareMirrorMode(reflector != nullptr);
   }
   reflector_ = reflector;
 
   OnReflectorChanged();
 }
 
 void BrowserCompositorOutputSurface::OnReflectorChanged() {
 }
 
 cc::OverlayCandidateValidator*
 BrowserCompositorOutputSurface::GetOverlayCandidateValidator() const {
   return overlay_candidate_validator_.get();
 }
 
 bool BrowserCompositorOutputSurface::HasExternalStencilTest() const {
   return false;
 }
 
 void BrowserCompositorOutputSurface::ApplyExternalStencil() {}
 
 }  // namespace content