Add NV12 buffer scanout support from exo to ozone.

gpu/command_buffer/common/gpu_memory_buffer_support.cc

 // 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 "gpu/command_buffer/common/gpu_memory_buffer_support.h"
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2extchromium.h>
 
 #include "base/logging.h"
@@ skipping 96 matching lines @@
       return capabilities.texture_rg;
     case gfx::BufferFormat::UYVY_422:
       return capabilities.image_ycbcr_422;
     case gfx::BufferFormat::BGR_565:
     case gfx::BufferFormat::RGBA_4444:
     case gfx::BufferFormat::RGBA_8888:
     case gfx::BufferFormat::RGBX_8888:
     case gfx::BufferFormat::YVU_420:
       return true;
     case gfx::BufferFormat::YUV_420_BIPLANAR:
+#if defined(OS_CHROMEOS) && defined(ARCH_CPU_ARM_FAMILY)
+      // TODO(dcastagna): Determine ycbcr_420v_image on CrOS at runtime
+      // querying minigbm. crbug.com/646148
+      return true;
+#else
       return capabilities.image_ycbcr_420v;
+#endif
   }
 
   NOTREACHED();
   return false;
 }
 
 bool IsImageSizeValidForGpuMemoryBufferFormat(const gfx::Size& size,
                                               gfx::BufferFormat format) {
   switch (format) {
     case gfx::BufferFormat::ATC:
@@ skipping 18 matching lines @@
       return size.width() % 2 == 0 && size.height() % 2 == 0;
     case gfx::BufferFormat::UYVY_422:
       return size.width() % 2 == 0;
   }
 
   NOTREACHED();
   return false;
 }
 
 }  // namespace gpu