Mojo: Convert OVERRIDE -> override in mojo/{embedder,system}.

mojo/system/shared_buffer_dispatcher.h

Index: mojo/system/shared_buffer_dispatcher.h
diff --git a/mojo/system/shared_buffer_dispatcher.h b/mojo/system/shared_buffer_dispatcher.h
index fb5c32e79827772009bac475181115080d863f79..8c2e7f1f52c6d75f8db8972749ed2a14a62c235c 100644
--- a/mojo/system/shared_buffer_dispatcher.h
+++ b/mojo/system/shared_buffer_dispatcher.h
@@ -47,7 +47,7 @@ class MOJO_SYSTEM_IMPL_EXPORT SharedBufferDispatcher : public SimpleDispatcher {
       scoped_refptr<SharedBufferDispatcher>* result);
 
   // |Dispatcher| public methods:
-  virtual Type GetType() const OVERRIDE;
+  virtual Type GetType() const override;
 
   // The "opposite" of |SerializeAndClose()|. (Typically this is called by
   // |Dispatcher::Deserialize()|.)
@@ -72,25 +72,25 @@ class MOJO_SYSTEM_IMPL_EXPORT SharedBufferDispatcher : public SimpleDispatcher {
       MojoDuplicateBufferHandleOptions* out_options);
 
   // |Dispatcher| protected methods:
-  virtual void CloseImplNoLock() OVERRIDE;
+  virtual void CloseImplNoLock() override;
   virtual scoped_refptr<Dispatcher>
-      CreateEquivalentDispatcherAndCloseImplNoLock() OVERRIDE;
+  CreateEquivalentDispatcherAndCloseImplNoLock() override;
   virtual MojoResult DuplicateBufferHandleImplNoLock(
       UserPointer<const MojoDuplicateBufferHandleOptions> options,
-      scoped_refptr<Dispatcher>* new_dispatcher) OVERRIDE;
+      scoped_refptr<Dispatcher>* new_dispatcher) override;
   virtual MojoResult MapBufferImplNoLock(
       uint64_t offset,
       uint64_t num_bytes,
       MojoMapBufferFlags flags,
-      scoped_ptr<embedder::PlatformSharedBufferMapping>* mapping) OVERRIDE;
+      scoped_ptr<embedder::PlatformSharedBufferMapping>* mapping) override;
   virtual void StartSerializeImplNoLock(Channel* channel,
                                         size_t* max_size,
-                                        size_t* max_platform_handles) OVERRIDE;
+                                        size_t* max_platform_handles) override;
   virtual bool EndSerializeAndCloseImplNoLock(
       Channel* channel,
       void* destination,
       size_t* actual_size,
-      embedder::PlatformHandleVector* platform_handles) OVERRIDE;
+      embedder::PlatformHandleVector* platform_handles) override;
 
   scoped_refptr<embedder::PlatformSharedBuffer> shared_buffer_;