Mandoline UI Process: Update namespaces and file names

components/mus/gles2/mojo_buffer_backing.h

Index: components/mus/gles2/mojo_buffer_backing.h
diff --git a/components/mus/gles2/mojo_buffer_backing.h b/components/mus/gles2/mojo_buffer_backing.h
index 04da87be33fef033be976ef9507cc1c7c8d3af55..730dd33a345446a355f30da6bfc27bec1e5e1c49 100644
--- a/components/mus/gles2/mojo_buffer_backing.h
+++ b/components/mus/gles2/mojo_buffer_backing.h
@@ -10,7 +10,7 @@
 #include "gpu/command_buffer/common/buffer.h"
 #include "third_party/mojo/src/mojo/public/cpp/system/core.h"
 
-namespace gles2 {
+namespace mus {
 
 class MojoBufferBacking : public gpu::BufferBacking {
  public:
@@ -34,6 +34,6 @@ class MojoBufferBacking : public gpu::BufferBacking {
   DISALLOW_COPY_AND_ASSIGN(MojoBufferBacking);
 };
 
-}  // namespace gles2
+}  // namespace mus
 
 #endif  // COMPONENTS_MUS_GLES2_MOJO_BUFFER_BACKING_H_