Get rid of virtual Display::CreateScheduler.

content/browser/compositor/browser_compositor_output_surface.cc

Index: content/browser/compositor/browser_compositor_output_surface.cc
diff --git a/content/browser/compositor/browser_compositor_output_surface.cc b/content/browser/compositor/browser_compositor_output_surface.cc
index 66183edd4d410ba9af3b3ff621f29128581b135e..361bbb98c06265b3d9ba63cfc6cf86f68d4157e6 100644
--- a/content/browser/compositor/browser_compositor_output_surface.cc
+++ b/content/browser/compositor/browser_compositor_output_surface.cc
@@ -12,6 +12,7 @@
 #include "base/strings/string_number_conversions.h"
 #include "cc/base/switches.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 "content/common/gpu/client/context_provider_command_buffer.h"
@@ -21,14 +22,12 @@ namespace content {
 BrowserCompositorOutputSurface::BrowserCompositorOutputSurface(
     scoped_refptr<cc::ContextProvider> context_provider,
     scoped_refptr<ui::CompositorVSyncManager> vsync_manager,
-    base::SingleThreadTaskRunner* task_runner,
+    cc::SyntheticBeginFrameSource* begin_frame_source,
     std::unique_ptr<display_compositor::CompositorOverlayCandidateValidator>
         overlay_candidate_validator)
     : OutputSurface(std::move(context_provider), nullptr, nullptr),
       vsync_manager_(std::move(vsync_manager)),
-      synthetic_begin_frame_source_(new cc::SyntheticBeginFrameSource(
-          task_runner,
-          cc::BeginFrameArgs::DefaultInterval())),
+      synthetic_begin_frame_source_(begin_frame_source),
       reflector_(nullptr),
       use_begin_frame_scheduling_(
           base::CommandLine::ForCurrentProcess()->HasSwitch(
@@ -40,12 +39,10 @@ BrowserCompositorOutputSurface::BrowserCompositorOutputSurface(
 BrowserCompositorOutputSurface::BrowserCompositorOutputSurface(
     std::unique_ptr<cc::SoftwareOutputDevice> software_device,
     const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager,
-    base::SingleThreadTaskRunner* task_runner)
+    cc::SyntheticBeginFrameSource* begin_frame_source)
     : OutputSurface(nullptr, nullptr, std::move(software_device)),
       vsync_manager_(vsync_manager),
-      synthetic_begin_frame_source_(new cc::SyntheticBeginFrameSource(
-          task_runner,
-          cc::BeginFrameArgs::DefaultInterval())),
+      synthetic_begin_frame_source_(begin_frame_source),
       reflector_(nullptr),
       use_begin_frame_scheduling_(
           base::CommandLine::ForCurrentProcess()->HasSwitch(
@@ -56,12 +53,10 @@ BrowserCompositorOutputSurface::BrowserCompositorOutputSurface(
 BrowserCompositorOutputSurface::BrowserCompositorOutputSurface(
     const scoped_refptr<cc::VulkanContextProvider>& vulkan_context_provider,
     const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager,
-    base::SingleThreadTaskRunner* task_runner)
+    cc::SyntheticBeginFrameSource* begin_frame_source)
     : OutputSurface(std::move(vulkan_context_provider)),
       vsync_manager_(vsync_manager),
-      synthetic_begin_frame_source_(new cc::SyntheticBeginFrameSource(
-          task_runner,
-          cc::BeginFrameArgs::DefaultInterval())),
+      synthetic_begin_frame_source_(begin_frame_source),
       reflector_(nullptr) {
   Initialize();
 }
@@ -88,9 +83,6 @@ bool BrowserCompositorOutputSurface::BindToClient(
   if (!OutputSurface::BindToClient(client))
     return false;
 
-  // Pass begin frame source up to Display to use for DisplayScheduler.
-  client->SetBeginFrameSource(synthetic_begin_frame_source_.get());
-
   // Don't want vsync notifications until there is a client.
   if (!use_begin_frame_scheduling_)
     vsync_manager_->AddObserver(this);