services/ui: Remove deprecated gpu code

content/browser/renderer_host/render_process_host_impl.cc

Index: content/browser/renderer_host/render_process_host_impl.cc
diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index 0de0be4a4f8c0e815be76ea25ab784bc5e62d71d..2fd8e2872a0957efb70bd3c7b9ab388cc9a0d1e6 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -235,10 +235,6 @@
 #include "content/common/media/media_stream_messages.h"
 #endif
 
-#if defined(MOJO_SHELL_CLIENT) && defined(USE_AURA)
-#include "services/ui/common/switches.h"  // nogncheck
-#endif
-
 #if defined(USE_MINIKIN_HYPHENATION)
 #include "content/browser/hyphenation/hyphenation_impl.h"
 #endif
@@ -1604,7 +1600,6 @@ void RenderProcessHostImpl::PropagateBrowserCommandLineToRenderer(
 #endif
 #if defined(MOJO_SHELL_CLIENT) && defined(USE_AURA)
     switches::kUseMusInRenderer,
-    ui::switches::kUseMojoGpuCommandBufferInMus,
 #endif
   };
   renderer_cmd->CopySwitchesFrom(browser_cmd, kSwitchNames,