[Ozone-Dri] Gracefully handle DRM devices with no resources

ui/ozone/platform/dri/dri_wrapper.cc

Index: ui/ozone/platform/dri/dri_wrapper.cc
diff --git a/ui/ozone/platform/dri/dri_wrapper.cc b/ui/ozone/platform/dri/dri_wrapper.cc
index 9cdc994353a2ec65886d71d342abad08ffaf8fa9..9964266342c8b1e8689b5121f897d9b0d83a97f0 100644
--- a/ui/ozone/platform/dri/dri_wrapper.cc
+++ b/ui/ozone/platform/dri/dri_wrapper.cc
@@ -163,10 +163,15 @@ DriWrapper::~DriWrapper() {
     watcher_->Shutdown();
 }
 
-void DriWrapper::Initialize() {
+bool DriWrapper::Initialize() {
   plane_manager_.reset(new HardwareDisplayPlaneManagerLegacy());
-  if (!plane_manager_->Initialize(this))
-    LOG(ERROR) << "Failed to initialize the plane manager";
+  if (!plane_manager_->Initialize(this)) {
+    LOG(ERROR) << "Failed to initialize the plane manager for "
+               << device_path_.value();
+    return false;

[alexst (slow to review), 2015/02/23 21:46:32]

Should reset the plane manager here since it's in an invalid state? I know we
clean up the whole wrapper later, but I prefer we don't leave partially
initialized state since it's unclear from here that failed init means deletion
later.

[dnicoara, 2015/02/23 21:49:10]

Done.

+  }
+
+  return true;
 }
 
 void DriWrapper::InitializeTaskRunner(