gl: Add YVU_420 support to GLImageOzoneNativePixmap.

ui/ozone/platform/drm/gpu/gbm_buffer.cc

 // Copyright 2014 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/ozone/platform/drm/gpu/gbm_buffer.h"
 
 #include <drm.h>
 #include <fcntl.h>
 #include <gbm.h>
 #include <xf86drm.h>
@@ skipping 40 matching lines @@
   if (fds_.empty())
     return false;
 
   for (const auto& fd : fds_) {
     if (fd.get() == -1)
       return false;
   }
   return true;
 }
 
+size_t GbmBuffer::GetFdCount() const {
+  return fds_.size();
+}
+
 int GbmBuffer::GetFd(size_t plane) const {
   DCHECK_LT(plane, fds_.size());
   return fds_[plane].get();
 }
 
 int GbmBuffer::GetStride(size_t plane) const {
   DCHECK_LT(plane, strides_.size());
   return strides_[plane];
 }
 
@@ skipping 106 matching lines @@
 }
 
 void* GbmPixmap::GetEGLClientBuffer() const {
   return nullptr;
 }
 
 bool GbmPixmap::AreDmaBufFdsValid() const {
   return buffer_->AreFdsValid();
 }
 
+size_t GbmPixmap::GetDmaBufFdCount() const {
+  return buffer_->GetFdCount();
+}
+
 int GbmPixmap::GetDmaBufFd(size_t plane) const {
   return buffer_->GetFd(plane);
 }
 
 int GbmPixmap::GetDmaBufPitch(size_t plane) const {
   return buffer_->GetStride(plane);
 }
 
 int GbmPixmap::GetDmaBufOffset(size_t plane) const {
   return buffer_->GetOffset(plane);
@@ skipping 49 matching lines @@
   DCHECK(!processing_callback_.is_null());
   if (!processing_callback_.Run(this, processed_pixmap_)) {
     LOG(ERROR) << "Failed processing NativePixmap";
     return nullptr;
   }
 
   return processed_pixmap_->buffer();
 }
 
 }  // namespace ui