Make delegated software renderer work on Mac

content/browser/renderer_host/render_widget_host_view_mac.h

Index: content/browser/renderer_host/render_widget_host_view_mac.h
diff --git a/content/browser/renderer_host/render_widget_host_view_mac.h b/content/browser/renderer_host/render_widget_host_view_mac.h
index 49ef5a0790c35b0f7f349afec30a8f353f9937ed..d3dfc6591cada44e3e097a65b6ec4314ea84238e 100644
--- a/content/browser/renderer_host/render_widget_host_view_mac.h
+++ b/content/browser/renderer_host/render_widget_host_view_mac.h
@@ -186,15 +186,11 @@ class Layer;
                              actualRange:(NSRangePointer)actualRange;
 @end
 
-@interface SoftwareLayer : CALayer {
- @private
-  content::RenderWidgetHostViewMac* renderWidgetHostView_;
-}
+@interface SoftwareLayer : CALayer
 
-- (id)initWithRenderWidgetHostViewMac:(content::RenderWidgetHostViewMac*)r;
+- (id)init;
 
-// Invalidate the RenderWidgetHostViewMac because it may be going away. If
-// displayed again, it will draw white.
+// Remove the layer from the layer hierarchy.
 - (void)disableRendering;
 
 @end
@@ -371,6 +367,10 @@ class CONTENT_EXPORT RenderWidgetHostViewMac
                              float scale_factor,
                              const std::vector<ui::LatencyInfo>& latency_info);
 
+  void GotBrowserCompositorSoftwareFrame(cc::SoftwareFrameData* frame_data,
+                                         float scale_factor,
+                                         SkCanvas* canvas);
+
   // Draw the IOSurface by making its context current to this view.
   void DrawIOSurfaceWithoutCoreAnimation();