ozone: Don't assume AddFB succeeds when importing buffers.

ui/ozone/platform/drm/gpu/gbm_buffer_base.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_base.h"
 
 #include <gbm.h>
 
 #include "base/logging.h"
 #include "ui/ozone/platform/drm/common/drm_util.h"
@@ skipping 22 matching lines @@
     uint32_t strides[4] = {0};
     strides[0] = gbm_bo_get_stride(bo);
     uint32_t offsets[4] = {0};
     uint64_t modifiers[4] = {0};
     modifiers[0] = modifier;
 
     // AddFramebuffer2 only considers the modifiers if addfb_flags has
     // DRM_MODE_FB_MODIFIERS set. We only set that when we've created
     // a bo with modifiers, otherwise, we rely on the "no modifiers"
     // behavior doing the right thing.
-    if (!drm_->AddFramebuffer2(gbm_bo_get_width(bo), gbm_bo_get_height(bo),
-                               framebuffer_pixel_format_, handles, strides,
-                               offsets, modifiers, &framebuffer_,
-                               addfb_flags)) {
-      PLOG(ERROR) << "Failed to register buffer";
-      return;
-    }
+    drm_->AddFramebuffer2(gbm_bo_get_width(bo), gbm_bo_get_height(bo),
+                          framebuffer_pixel_format_, handles, strides, offsets,
+                          modifiers, &framebuffer_, addfb_flags);
   }
 }
 
 GbmBufferBase::~GbmBufferBase() {
   if (framebuffer_)
     drm_->RemoveFramebuffer(framebuffer_);
 }
 
 uint32_t GbmBufferBase::GetFramebufferId() const {
   return framebuffer_;
@@ skipping 14 matching lines @@
 
 const DrmDevice* GbmBufferBase::GetDrmDevice() const {
   return drm_.get();
 }
 
 bool GbmBufferBase::RequiresGlFinish() const {
   return !drm_->is_primary_device();
 }
 
 }  // namespace ui