Mac: Add partial swap support to NSOpenGLContext path

ui/accelerated_widget_mac/accelerated_widget_mac.h

Index: ui/accelerated_widget_mac/accelerated_widget_mac.h
diff --git a/ui/accelerated_widget_mac/accelerated_widget_mac.h b/ui/accelerated_widget_mac/accelerated_widget_mac.h
index 9b9cb53b3697443e888998a487fd71b0a4d93962..d4646bf5001a89b398a452a04d825c4b5f6f653e 100644
--- a/ui/accelerated_widget_mac/accelerated_widget_mac.h
+++ b/ui/accelerated_widget_mac/accelerated_widget_mac.h
@@ -10,6 +10,7 @@
 
 #include "ui/accelerated_widget_mac/accelerated_widget_mac_export.h"
 #include "ui/events/latency_info.h"
+#include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/native_widget_types.h"
 
@@ -78,8 +79,9 @@ class ACCELERATED_WIDGET_MAC_EXPORT AcceleratedWidgetMac
   void GotAcceleratedFrame(
       uint64 surface_handle,
       const std::vector<ui::LatencyInfo>& latency_info,
-      gfx::Size pixel_size,
+      const gfx::Size& pixel_size,
       float scale_factor,
+      const gfx::Rect& pixel_damage_rect,
       const base::Closure& drawn_callback);
 
   void GotSoftwareFrame(float scale_factor, SkCanvas* canvas);
@@ -90,14 +92,17 @@ class ACCELERATED_WIDGET_MAC_EXPORT AcceleratedWidgetMac
   void IOSurfaceLayerDidDrawFrame() override;
   void IOSurfaceLayerHitError() override;
 
-  void GotAcceleratedCAContextFrame(
-      CAContextID ca_context_id, gfx::Size pixel_size, float scale_factor);
+  void GotAcceleratedCAContextFrame(CAContextID ca_context_id,
+                                    const gfx::Size& pixel_size,
+                                    float scale_factor);
 
-  void GotAcceleratedIOSurfaceFrame(
-      IOSurfaceID io_surface_id, gfx::Size pixel_size, float scale_factor);
+  void GotAcceleratedIOSurfaceFrame(IOSurfaceID io_surface_id,
+                                    const gfx::Size& pixel_size,
+                                    float scale_factor);
 
   void GotAcceleratedIOSurfaceFrameNSGL(
-      IOSurfaceID io_surface_id, gfx::Size pixel_size, float scale_factor);
+      IOSurfaceID io_surface_id, const gfx::Size& pixel_size,
+      float scale_factor, const gfx::Rect& pixel_damage_rect);
 
   void AcknowledgeAcceleratedFrame();
 
@@ -160,7 +165,9 @@ ACCELERATED_WIDGET_MAC_EXPORT
 void AcceleratedWidgetMacGotAcceleratedFrame(
     gfx::AcceleratedWidget widget, uint64 surface_handle,
     const std::vector<ui::LatencyInfo>& latency_info,
-    gfx::Size pixel_size, float scale_factor,
+    const gfx::Size& pixel_size,
+    float scale_factor,
+    const gfx::Rect& pixel_damage_rect,
     const base::Closure& drawn_callback,
     bool* disable_throttling, int* renderer_id);