Mac software video: Use AVSampleBufferDisplayLayer

ui/accelerated_widget_mac/ca_renderer_layer_tree.mm

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/accelerated_widget_mac/ca_renderer_layer_tree.h"
 
 #include <AVFoundation/AVFoundation.h>
 #include <CoreMedia/CoreMedia.h>
 #include <CoreVideo/CoreVideo.h>
 #include <GLES2/gl2extchromium.h>
@@ skipping 309 matching lines @@
       ca_edge_aa_mask |= kCALayerTopEdge;
     if (edge_aa_mask & GL_CA_LAYER_EDGE_BOTTOM_CHROMIUM)
       ca_edge_aa_mask |= kCALayerBottomEdge;
   }
 
   // Only allow 4:2:0 frames which fill the layer's contents to be promoted to
   // AV layers.
   if (IOSurfaceGetPixelFormat(io_surface) ==
           kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange &&
       contents_rect == gfx::RectF(0, 0, 1, 1)) {
-    // Enable only for hardware decoded frames, to see if flashing bugs are
-    // particular to software IOSurfaces.
-    // https://crbug.com/598269
-    if (cv_pixel_buffer)
-      use_av_layer = true;
+    use_av_layer = true;
   }
 }
 
 CARendererLayerTree::ContentLayer::ContentLayer(ContentLayer&& layer)
     : io_surface(layer.io_surface),
       cv_pixel_buffer(layer.cv_pixel_buffer),
       contents_rect(layer.contents_rect),
       rect(layer.rect),
       background_color(layer.background_color),
       ca_edge_aa_mask(layer.ca_edge_aa_mask),
@@ skipping 297 matching lines @@
     [ca_layer setMagnificationFilter:ca_filter];
     [ca_layer setMinificationFilter:ca_filter];
   }
 
   static bool show_borders = base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kShowMacOverlayBorders);
   if (show_borders) {
     base::ScopedCFTypeRef<CGColorRef> color;
     if (update_anything) {
       if (use_av_layer) {
-        // Green represents an AV layer that changed this frame.
-        color.reset(CGColorCreateGenericRGB(0, 1, 0, 1));
+        // Yellow represents an AV layer that changed this frame.
+        color.reset(CGColorCreateGenericRGB(1, 1, 0, 1));
       } else {
         // Pink represents a CALayer that changed this frame.
         color.reset(CGColorCreateGenericRGB(1, 0, 1, 1));
       }
     } else {
       // Grey represents a CALayer that has not changed.
-      color.reset(CGColorCreateGenericRGB(0, 0, 0, 0.1));
+      color.reset(CGColorCreateGenericRGB(0.5, 0.5, 0.5, 1));
     }
     [ca_layer setBorderWidth:1];
     [ca_layer setBorderColor:color];
   }
 }
 
 }  // namespace ui