gpu: Move ContextProviderCommandBuffer into mus gpu client-lib.

content/browser/compositor/gpu_output_surface_mac.mm

Index: content/browser/compositor/gpu_output_surface_mac.mm
diff --git a/content/browser/compositor/gpu_output_surface_mac.mm b/content/browser/compositor/gpu_output_surface_mac.mm
index 9751c35be5b1eb76f6c5dd8e5522d28dd3bf7fc3..3a50527451dad04a35710417479f755ee7d75c07 100644
--- a/content/browser/compositor/gpu_output_surface_mac.mm
+++ b/content/browser/compositor/gpu_output_surface_mac.mm
@@ -7,9 +7,9 @@
 #include "cc/output/output_surface_client.h"
 #include "cc/output/output_surface_frame.h"
 #include "components/display_compositor/compositor_overlay_candidate_validator.h"
-#include "content/common/gpu/client/context_provider_command_buffer.h"
 #include "gpu/GLES2/gl2extchromium.h"
 #include "gpu/ipc/client/gpu_process_hosted_ca_layer_tree_params.h"
+#include "services/ui/public/cpp/gpu/context_provider_command_buffer.h"
 #include "ui/accelerated_widget_mac/accelerated_widget_mac.h"
 #include "ui/base/cocoa/remote_layer_api.h"
 #include "ui/compositor/compositor.h"
@@ -50,7 +50,7 @@ struct GpuOutputSurfaceMac::RemoteLayers {
 
 GpuOutputSurfaceMac::GpuOutputSurfaceMac(
     gfx::AcceleratedWidget widget,
-    scoped_refptr<ContextProviderCommandBuffer> context,
+    scoped_refptr<ui::ContextProviderCommandBuffer> context,
     gpu::SurfaceHandle surface_handle,
     const UpdateVSyncParametersCallback& update_vsync_parameters_callback,
     std::unique_ptr<display_compositor::CompositorOverlayCandidateValidator>