ozone: Add ability to set clinet capabilities which we will need for atomic

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 557 matching lines @@
     // If successful the payload will be removed by the event
     ignore_result(payload.release());
     return true;
   }
   return false;
 #else
   return false;
 #endif  // defined(USE_DRM_ATOMIC)
 }
 
+bool DrmDevice::SetCapability(uint64_t capability, uint64_t value) {
+  DCHECK(file_.IsValid());
+  return !drmSetClientCap(file_.GetPlatformFile(), capability, value);
+}
+
 bool DrmDevice::SetMaster() {
   DCHECK(file_.IsValid());
   return (drmSetMaster(file_.GetPlatformFile()) == 0);
 }
 
 bool DrmDevice::DropMaster() {
   DCHECK(file_.IsValid());
   return (drmDropMaster(file_.GetPlatformFile()) == 0);
 }
 
@@ skipping 19 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