Mandoline UI Process: Update namespaces and file names

components/mus/gles2/gpu_memory_tracker.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_MUS_GLES2_GPU_MEMORY_TRACKER_H_
 #define COMPONENTS_MUS_GLES2_GPU_MEMORY_TRACKER_H_
 
 #include "gpu/command_buffer/service/memory_tracking.h"
 
-namespace gles2 {
+namespace mus {
 
 // TODO(fsamuel, rjkroege): This is a stub implementation that needs to be
 // completed for proper memory tracking.
 class GpuMemoryTracker : public gpu::gles2::MemoryTracker {
  public:
   GpuMemoryTracker();
 
-  // gpu::gles2::MemoryTracker implementation:
+  // gpu::MemoryTracker implementation:
   void TrackMemoryAllocatedChange(
       size_t old_size,
       size_t new_size,
       gpu::gles2::MemoryTracker::Pool pool) override;
   bool EnsureGPUMemoryAvailable(size_t size_needed) override;
   uint64_t ClientTracingId() const override;
   int ClientId() const override;
 
  private:
   ~GpuMemoryTracker() override;
 
   DISALLOW_COPY_AND_ASSIGN(GpuMemoryTracker);
 };
 
-}  // namespace gles2
+}  // namespace mus
 
 #endif  // COMPONENTS_MUS_GLES2_GPU_MEMORY_TRACKER_H_