Mac CoreAnimation compositor in the browser process

ui/accelerated_widget_mac/ca_layer_tree_coordinator.mm

Index: ui/accelerated_widget_mac/ca_layer_tree_coordinator.mm
diff --git a/ui/accelerated_widget_mac/ca_layer_tree_coordinator.mm b/ui/accelerated_widget_mac/ca_layer_tree_coordinator.mm
index 5aaeb023ea057b420843ff63ccac5cd4bda4144e..b7a369a2c7ecf7f0b323938801c3cf1f8ea0101f 100644
--- a/ui/accelerated_widget_mac/ca_layer_tree_coordinator.mm
+++ b/ui/accelerated_widget_mac/ca_layer_tree_coordinator.mm
@@ -8,6 +8,7 @@
 
 #include "base/trace_event/trace_event.h"
 #include "ui/base/cocoa/animation_utils.h"
+#include "ui/gfx/geometry/dip_util.h"
 
 namespace ui {
 
@@ -15,7 +16,7 @@
     : allow_remote_layers_(allow_remote_layers) {
   if (allow_remote_layers_) {
     root_ca_layer_.reset([[CALayer alloc] init]);
-    [root_ca_layer_ setGeometryFlipped:YES];
+    // [root_ca_layer_ setGeometryFlipped:YES];
     [root_ca_layer_ setOpaque:YES];
 
     fullscreen_low_power_layer_.reset(
@@ -29,6 +30,9 @@
                                     float scale_factor) {
   pixel_size_ = pixel_size;
   scale_factor_ = scale_factor;
+
+  gfx::Rect dip_rect = gfx::Rect(gfx::ConvertSizeToDIP(scale_factor_, pixel_size_));
+  [root_ca_layer_ setFrame:dip_rect.ToCGRect()];
 }
 
 bool CALayerTreeCoordinator::SetPendingGLRendererBackbuffer(