[macOS] Do not subscribe to display callbacks when GPU is disabled

The callbacks are handled as a GPU info update, which will lead to a
crash because the shared contexts cannot be initialized.

Additionally, check if the context state could be successfully
initialized before trying to update the GPU info.

Pick-to: 108-based
Task-number: QTBUG-114752
Change-Id: Idfe7de3e429c49d57874bb82f503e7bb863aa899
Reviewed-on: https://codereview.qt-project.org/c/qt/qtwebengine-chromium/+/492881
Reviewed-by: Michal Klocek <[email protected]>

Author: mibrunin

chromium/components/viz/service/gl/gpu_service_impl.cc

@@ -545,7 +545,10 @@ void GpuServiceImpl::UpdateGPUInfo() {
 
 void GpuServiceImpl::UpdateGPUInfoGL() {
   DCHECK(main_runner_->BelongsToCurrentThread());
-  gpu::CollectGraphicsInfoGL(&gpu_info_, GetContextState()->display());
+  scoped_refptr<gpu::SharedContextState> context_state = GetContextState();
+  if (!context_state.get())
+    return;
+  gpu::CollectGraphicsInfoGL(&gpu_info_, context_state->display());
   gpu_host_->DidUpdateGPUInfo(gpu_info_);
 }
 

chromium/content/browser/gpu/gpu_data_manager_impl_private.cc

@@ -510,7 +510,9 @@ GpuDataManagerImplPrivate::GpuDataManagerImplPrivate(GpuDataManagerImpl* owner)
   }
 
 #if BUILDFLAG(IS_MAC)
-  CGDisplayRegisterReconfigurationCallback(DisplayReconfigCallback, owner_);
+  if (!command_line->HasSwitch(switches::kDisableGpu)) {
+    CGDisplayRegisterReconfigurationCallback(DisplayReconfigCallback, owner_);
+  }
 #endif  // BUILDFLAG(IS_MAC)
 
   // For testing only.