Mandoline UI Process: Update namespaces and file names

components/mus/gles2/mojo_buffer_backing.cc

Index: components/mus/gles2/mojo_buffer_backing.cc
diff --git a/components/mus/gles2/mojo_buffer_backing.cc b/components/mus/gles2/mojo_buffer_backing.cc
index bdb745bef47ce16a4ebf4d6c4c0a327f6c6b087a..1beadb32cda3620f0c0b9d7fd264709c32ff55e0 100644
--- a/components/mus/gles2/mojo_buffer_backing.cc
+++ b/components/mus/gles2/mojo_buffer_backing.cc
@@ -6,7 +6,7 @@
 
 #include "base/logging.h"
 
-namespace gles2 {
+namespace mus {
 
 MojoBufferBacking::MojoBufferBacking(mojo::ScopedSharedBufferHandle handle,
                                      void* memory,
@@ -37,4 +37,4 @@ size_t MojoBufferBacking::GetSize() const {
   return size_;
 }
 
-}  // namespace gles2
+}  // namespace mus