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..5fb0e004c7363fb4398adb8f165acac35e06f1ef 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"
 
@@ -80,6 +81,7 @@ class ACCELERATED_WIDGET_MAC_EXPORT AcceleratedWidgetMac
       const std::vector<ui::LatencyInfo>& latency_info,
       gfx::Size pixel_size,
       float scale_factor,
+      gfx::Rect pixel_damage_rect,

[dcheng, 2015/06/05 23:31:41]

I think gfx::rect (and gfx::Size) are usually passed by reference.

[ccameron, 2015/06/07 19:48:23]

Done -- also changed all other functions' gfx::Size arguments in this file as
well.

       const base::Closure& drawn_callback);
 
   void GotSoftwareFrame(float scale_factor, SkCanvas* canvas);
@@ -97,7 +99,8 @@ class ACCELERATED_WIDGET_MAC_EXPORT AcceleratedWidgetMac
       IOSurfaceID io_surface_id, gfx::Size pixel_size, float scale_factor);
 
   void GotAcceleratedIOSurfaceFrameNSGL(
-      IOSurfaceID io_surface_id, gfx::Size pixel_size, float scale_factor);
+      IOSurfaceID io_surface_id, gfx::Size pixel_size, float scale_factor,
+      gfx::Rect pixel_damage_rect);

[dcheng, 2015/06/05 23:31:41]

Ditto to passing by reference here and elsewhere.

[ccameron, 2015/06/07 19:48:23]

Done.

 
   void AcknowledgeAcceleratedFrame();
 
@@ -160,7 +163,7 @@ 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,
+    gfx::Size pixel_size, float scale_factor, gfx::Rect pixel_damage_rect,
     const base::Closure& drawn_callback,
     bool* disable_throttling, int* renderer_id);