Fix RenderWidgetHostViewMac::SchedulePaintInRect

This function in Aura is intended to be used for layer damage (not
window damage), so make the Mac version do the same.

BUG=none

Review URL: https://codereview.chromium.org/427393005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@287474 0039d316-1c4b-4281-b951-d872f2087c98

content/browser/renderer_host/render_widget_host_view_mac.mm

@@ -427,8 +427,8 @@ RenderWidgetHostImpl* RenderWidgetHostViewMac::GetHost() {
 
 void RenderWidgetHostViewMac::SchedulePaintInRect(
     const gfx::Rect& damage_rect_in_dip) {
-  if (browser_compositor_view_)
-    browser_compositor_view_->GetCompositor()->ScheduleFullRedraw();
+  DCHECK(GetLayer());
+  GetLayer()->SchedulePaint(damage_rect_in_dip);
 }
 
 bool RenderWidgetHostViewMac::IsVisible() {