Route DXGI Frame Statistics to VSyncProvider

ui/gl/gl_surface_egl.h

 // Copyright (c) 2012 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.
 
 #ifndef UI_GL_GL_SURFACE_EGL_H_
 #define UI_GL_GL_SURFACE_EGL_H_
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/vsync_provider.h"
 #include "ui/gl/gl_bindings.h"
 #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 {
 
 // If adding a new type, also add it to EGLDisplayType in
 // tools/metrics/histograms/histograms.xml. Don't remove or reorder entries.
 enum DisplayType {
   DEFAULT = 0,
   SWIFT_SHADER = 1,
   ANGLE_WARP = 2,
   ANGLE_D3D9 = 3,
   ANGLE_D3D11 = 4,
   ANGLE_OPENGL = 5,
   ANGLE_OPENGLES = 6,
   DISPLAY_TYPE_MAX = 7,
 };
 
 GL_EXPORT void GetEGLInitDisplays(bool supports_angle_d3d,
                                   bool supports_angle_opengl,
                                   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:
   GLSurfaceEGL();
 
   // Implement GLSurface.
   EGLDisplay GetDisplay() override;
   EGLConfig GetConfig() override;
   GLSurface::Format GetFormat() override;
 
@@ skipping 156 matching lines @@
   ~SurfacelessEGL() override;
 
  private:
   gfx::Size size_;
   DISALLOW_COPY_AND_ASSIGN(SurfacelessEGL);
 };
 
 }  // namespace gl
 
 #endif  // UI_GL_GL_SURFACE_EGL_H_