Standardize usage of virtual/override/final in mojo/

mojo/services/gles2/command_buffer_impl.cc

 // Copyright 2013 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.
 
 #include "mojo/services/gles2/command_buffer_impl.h"
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/memory/shared_memory.h"
 #include "gpu/command_buffer/common/constants.h"
@@ skipping 10 matching lines @@
 #include "ui/gl/gl_surface.h"
 
 namespace mojo {
 
 namespace {
 
 class MemoryTrackerStub : public gpu::gles2::MemoryTracker {
  public:
   MemoryTrackerStub() {}
 
-  virtual void TrackMemoryAllocatedChange(size_t old_size,
-                                          size_t new_size,
-                                          gpu::gles2::MemoryTracker::Pool pool)
-      override {}
+  void TrackMemoryAllocatedChange(
+      size_t old_size,
+      size_t new_size,
+      gpu::gles2::MemoryTracker::Pool pool) override {}
 
-  virtual bool EnsureGPUMemoryAvailable(size_t size_needed) override {
-    return true;
-  };
+  bool EnsureGPUMemoryAvailable(size_t size_needed) override { return true; };
 
  private:
-  virtual ~MemoryTrackerStub() {}
+  ~MemoryTrackerStub() override {}
 
   DISALLOW_COPY_AND_ASSIGN(MemoryTrackerStub);
 };
 
 }  // anonymous namespace
 
 CommandBufferImpl::CommandBufferImpl(
     gfx::GLShareGroup* share_group,
     gpu::gles2::MailboxManager* mailbox_manager)
     : widget_(gfx::kNullAcceleratedWidget),
@@ skipping 143 matching lines @@
 void CommandBufferImpl::OnParseError() {
   gpu::CommandBuffer::State state = command_buffer_->GetLastState();
   client()->LostContext(state.context_lost_reason);
 }
 
 void CommandBufferImpl::OnResize(gfx::Size size, float scale_factor) {
   surface_->Resize(size);
 }
 
 }  // namespace mojo