[Ozone-Gbm] Explicitly crash if trying software rendering on GBM

ui/ozone/platform/dri/gbm_surface_factory.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/gbm_surface_factory.h"
 
 #include <gbm.h>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "third_party/khronos/EGL/egl.h"
 #include "ui/ozone/common/egl_util.h"
 #include "ui/ozone/platform/dri/dri_window_delegate_impl.h"
 #include "ui/ozone/platform/dri/dri_window_delegate_manager.h"
 #include "ui/ozone/platform/dri/drm_device_manager.h"
 #include "ui/ozone/platform/dri/gbm_buffer.h"
 #include "ui/ozone/platform/dri/gbm_surface.h"
 #include "ui/ozone/platform/dri/gbm_surfaceless.h"
 #include "ui/ozone/platform/dri/gbm_wrapper.h"
 #include "ui/ozone/platform/dri/hardware_display_controller.h"
 #include "ui/ozone/public/native_pixmap.h"
 #include "ui/ozone/public/overlay_candidates_ozone.h"
 #include "ui/ozone/public/ozone_switches.h"
+#include "ui/ozone/public/surface_ozone_canvas.h"
 #include "ui/ozone/public/surface_ozone_egl.h"
 
 namespace ui {
 namespace {
 
 class SingleOverlay : public OverlayCandidatesOzone {
  public:
   SingleOverlay() {}
   ~SingleOverlay() override {}
 
@@ skipping 72 matching lines @@
 
   return kConfigAttribs;
 }
 
 bool GbmSurfaceFactory::LoadEGLGLES2Bindings(
       AddGLLibraryCallback add_gl_library,
       SetGLGetProcAddressProcCallback set_gl_get_proc_address) {
   return LoadDefaultEGLGLES2Bindings(add_gl_library, set_gl_get_proc_address);
 }
 
+scoped_ptr<SurfaceOzoneCanvas> GbmSurfaceFactory::CreateCanvasForWidget(
+    gfx::AcceleratedWidget widget) {
+  LOG(FATAL) << "Software rendering mode is not supported with GBM platform";
+  return nullptr;
+}
+
 scoped_ptr<SurfaceOzoneEGL> GbmSurfaceFactory::CreateEGLSurfaceForWidget(
     gfx::AcceleratedWidget widget) {
   scoped_refptr<GbmWrapper> gbm = GetGbmDevice(widget);
   DCHECK(gbm);
 
   scoped_ptr<GbmSurface> surface(
       new GbmSurface(window_manager_->GetWindowDelegate(widget), gbm));
   if (!surface->Initialize())
     return nullptr;
 
@@ skipping 81 matching lines @@
   return false;
 }
 
 scoped_refptr<GbmWrapper> GbmSurfaceFactory::GetGbmDevice(
     gfx::AcceleratedWidget widget) {
   return static_cast<GbmWrapper*>(
       drm_device_manager_->GetDrmDevice(widget).get());
 }
 
 }  // namespace ui