Revert of "Route DXGI Frame Statistics to VSyncProvider"

ui/gl/gl_surface_egl.h

Index: ui/gl/gl_surface_egl.h
diff --git a/ui/gl/gl_surface_egl.h b/ui/gl/gl_surface_egl.h
index cf10a1c6aa905cb2d432dfe7944e92af31a808ae..d9caa8fe55b020fa0cc93a76636fba9d17b2948c 100644
--- a/ui/gl/gl_surface_egl.h
+++ b/ui/gl/gl_surface_egl.h
@@ -24,7 +24,6 @@
 #include "ui/gl/gl_export.h"
 #include "ui/gl/gl_surface.h"
 #include "ui/gl/gl_surface_overlay.h"
-#include "ui/gl/sync_control_vsync_provider.h"
 
 namespace gl {
 
@@ -48,25 +47,6 @@ GL_EXPORT void GetEGLInitDisplays(bool supports_angle_d3d,
                                   const base::CommandLine* command_line,
                                   std::vector<DisplayType>* init_displays);
 
-// VSync provider for EGL surface;
-class GL_EXPORT EGLSyncControlVSyncProvider : public SyncControlVSyncProvider {
- public:
-  explicit EGLSyncControlVSyncProvider(EGLSurface surface);
-  ~EGLSyncControlVSyncProvider() override;
-
- protected:
-  bool GetSyncValues(int64_t* system_time,
-                     int64_t* media_stream_counter,
-                     int64_t* swap_buffer_counter) override;
-
-  bool GetMscRate(int32_t* numerator, int32_t* denominator) override;
-
- private:
-  EGLSurface surface_;
-
-  DISALLOW_COPY_AND_ASSIGN(EGLSyncControlVSyncProvider);
-};
-
 // Interface for EGL surface.
 class GL_EXPORT GLSurfaceEGL : public GLSurface {
  public: