Add support to send optimal format as part of ScheduleOverlayPlane

content/common/gpu/image_transport_surface_overlay_mac.mm

Index: content/common/gpu/image_transport_surface_overlay_mac.mm
diff --git a/content/common/gpu/image_transport_surface_overlay_mac.mm b/content/common/gpu/image_transport_surface_overlay_mac.mm
index e4fb3e86c777bc9cf7a75cc306a3c54f6aa56a9d..4d526d63e91368d660e8b80dcc2d0623934dc656 100644
--- a/content/common/gpu/image_transport_surface_overlay_mac.mm
+++ b/content/common/gpu/image_transport_surface_overlay_mac.mm
@@ -736,9 +736,11 @@ bool ImageTransportSurfaceOverlayMac::SetBackbufferAllocation(bool allocated) {
 bool ImageTransportSurfaceOverlayMac::ScheduleOverlayPlane(
     int z_order,
     gfx::OverlayTransform transform,
+    gfx::BufferFormat storage_format,
     gl::GLImage* image,
     const gfx::Rect& pixel_frame_rect,
-    const gfx::RectF& crop_rect) {
+    const gfx::RectF& crop_rect,
+    bool handle_scaling) {
   DCHECK_EQ(transform, gfx::OVERLAY_TRANSFORM_NONE);
   if (transform != gfx::OVERLAY_TRANSFORM_NONE)
     return false;