[Ozone-Dri] Do not call AddFramebuffer with cursor buffers

ui/ozone/platform/dri/dri_window_delegate_impl.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/dri/dri_window_delegate_impl.h"
 
 #include "base/trace_event/trace_event.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkDevice.h"
 #include "third_party/skia/include/core/SkSurface.h"
@@ skipping 56 matching lines @@
       device_manager_->GetDrmDevice(gfx::kNullAcceleratedWidget);
 
   uint64_t cursor_width = 64;
   uint64_t cursor_height = 64;
   drm->GetCapability(DRM_CAP_CURSOR_WIDTH, &cursor_width);
   drm->GetCapability(DRM_CAP_CURSOR_HEIGHT, &cursor_height);
 
   SkImageInfo info = SkImageInfo::MakeN32Premul(cursor_width, cursor_height);
   for (size_t i = 0; i < arraysize(cursor_buffers_); ++i) {
     cursor_buffers_[i] = new DriBuffer(drm);
-    if (!cursor_buffers_[i]->Initialize(info)) {
+    // Don't register a framebuffer for cursors since they are special (they
+    // aren't modesetting buffers and drivers may fail to register them due to
+    // their small sizes).
+    if (!cursor_buffers_[i]->Initialize(
+            info, false /* should_register_framebuffer */)) {
       LOG(ERROR) << "Failed to initialize cursor buffer";
       return;
     }
   }
 }
 
 void DriWindowDelegateImpl::Shutdown() {
   TRACE_EVENT1("dri", "DriWindowDelegateImpl::Shutdown", "widget", widget_);
   screen_manager_->RemoveObserver(this);
   device_manager_->RemoveDrmDevice(widget_);
@@ skipping 104 matching lines @@
 
 void DriWindowDelegateImpl::UpdateWidgetToDrmDeviceMapping() {
   scoped_refptr<DriWrapper> drm = nullptr;
   if (controller_)
     drm = controller_->GetAllocationDriWrapper();
 
   device_manager_->UpdateDrmDevice(widget_, drm);
 }
 
 }  // namespace ui