Mandoline UI Process: Update namespaces and file names

components/mus/gles2/gpu_state.cc

Index: components/mus/gles2/gpu_state.cc
diff --git a/components/mus/gles2/gpu_state.cc b/components/mus/gles2/gpu_state.cc
index 4553cf70bd023fc495d625577cd7ffa4cdb44414..48932e6aaff65f224c2be7374b8403ed23f368f6 100644
--- a/components/mus/gles2/gpu_state.cc
+++ b/components/mus/gles2/gpu_state.cc
@@ -5,7 +5,7 @@
 
 #include "components/mus/gles2/gpu_state.h"
 
-namespace gles2 {
+namespace mus {
 
 GpuState::GpuState()
     : control_thread_("gpu_command_buffer_control"),
@@ -21,4 +21,4 @@ void GpuState::StopControlThread() {
   control_thread_.Stop();
 }
 
-}  // namespace gles2
+}  // namespace mus