Revert of Mandoline UI Process: Update namespaces and file names

components/mus/gles2/gpu_state.h

Index: components/mus/gles2/gpu_state.h
diff --git a/components/mus/gles2/gpu_state.h b/components/mus/gles2/gpu_state.h
index 59148b7859d9e3f7ba9b459cc7d37dc1f2003dd1..48640531f8af353207c8051ac7d0ca1bb9f29fb5 100644
--- a/components/mus/gles2/gpu_state.h
+++ b/components/mus/gles2/gpu_state.h
@@ -13,7 +13,7 @@
 #include "gpu/command_buffer/service/sync_point_manager.h"
 #include "ui/gl/gl_share_group.h"
 
-namespace mus {
+namespace gles2 {
 
 // We need to share these across all CommandBuffer instances so that contexts
 // they create can share resources with each other via mailboxes.
@@ -50,6 +50,6 @@
   scoped_refptr<gpu::gles2::MailboxManager> mailbox_manager_;
 };
 
-}  // namespace mus
+}  // namespace gles2
 
 #endif  // COMPONENTS_MUS_GLES2_GPU_STATE_H_