[Ozone] Enables overlay render format setting path and by default use UYVY

ui/ozone/platform/drm/gpu/drm_device.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/drm_device.h"
 
 #include <fcntl.h>
 #include <sys/mman.h>
 #include <unistd.h>
 #include <xf86drm.h>
@@ skipping 281 matching lines @@
                          NULL);
 }
 
 ScopedDrmConnectorPtr DrmDevice::GetConnector(uint32_t connector_id) {
   DCHECK(file_.IsValid());
   TRACE_EVENT1("drm", "DrmDevice::GetConnector", "connector", connector_id);
   return ScopedDrmConnectorPtr(
       drmModeGetConnector(file_.GetPlatformFile(), connector_id));
 }
 
-bool DrmDevice::AddFramebuffer(uint32_t width,
-                               uint32_t height,
-                               uint8_t depth,
-                               uint8_t bpp,
-                               uint32_t stride,
-                               uint32_t handle,
-                               uint32_t* framebuffer) {
+bool DrmDevice::AddFramebuffer2(uint32_t width,
+                                uint32_t height,
+                                uint32_t format,
+                                uint32_t handles[4],
+                                uint32_t strides[4],
+                                uint32_t offsets[4],
+                                uint32_t* framebuffer,
+                                uint32_t flags) {
   DCHECK(file_.IsValid());
-  TRACE_EVENT1("drm", "DrmDevice::AddFramebuffer", "handle", handle);
-  return !drmModeAddFB(file_.GetPlatformFile(), width, height, depth, bpp,
-                       stride, handle, framebuffer);
+  TRACE_EVENT1("drm", "DrmDevice::AddFramebuffer", "handle", handles[0]);
+  return !drmModeAddFB2(file_.GetPlatformFile(), width, height, format, handles,
+                        strides, offsets, framebuffer, 0);

[kalyank, 2015/11/06 17:30:26]

we should set whatever is passed in |flags| here and not 0. 

[william.xie1, 2015/11/06 18:24:02]

Done.

 }
 
 bool DrmDevice::RemoveFramebuffer(uint32_t framebuffer) {
   DCHECK(file_.IsValid());
   TRACE_EVENT1("drm", "DrmDevice::RemoveFramebuffer", "framebuffer",
                framebuffer);
   return !drmModeRmFB(file_.GetPlatformFile(), framebuffer);
 }
 
 bool DrmDevice::PageFlip(uint32_t crtc_id,
@@ skipping 212 matching lines @@
     b.push_back(lut[i].b);
   }
 
   DCHECK(file_.IsValid());
   TRACE_EVENT0("drm", "DrmDevice::SetGamma");
   return (drmModeCrtcSetGamma(file_.GetPlatformFile(), crtc_id, r.size(), &r[0],
                               &g[0], &b[0]) == 0);
 }
 
 }  // namespace ui