replace OVERRIDE and FINAL with override and final in ppapi/

ppapi/proxy/ppb_buffer_proxy.h

Index: ppapi/proxy/ppb_buffer_proxy.h
diff --git a/ppapi/proxy/ppb_buffer_proxy.h b/ppapi/proxy/ppb_buffer_proxy.h
index 6c8fcc2fe4e006924a3a6021fcef52294732248b..7566c08cf1a4aa1fe1dfdd1103f299b9bc52b335 100644
--- a/ppapi/proxy/ppb_buffer_proxy.h
+++ b/ppapi/proxy/ppb_buffer_proxy.h
@@ -27,16 +27,16 @@ class Buffer : public thunk::PPB_Buffer_API, public Resource {
   virtual ~Buffer();
 
   // Resource overrides.
-  virtual thunk::PPB_Buffer_API* AsPPB_Buffer_API() OVERRIDE;
+  virtual thunk::PPB_Buffer_API* AsPPB_Buffer_API() override;
 
   // PPB_Buffer_API implementation.
-  virtual PP_Bool Describe(uint32_t* size_in_bytes) OVERRIDE;
-  virtual PP_Bool IsMapped() OVERRIDE;
-  virtual void* Map() OVERRIDE;
-  virtual void Unmap() OVERRIDE;
+  virtual PP_Bool Describe(uint32_t* size_in_bytes) override;
+  virtual PP_Bool IsMapped() override;
+  virtual void* Map() override;
+  virtual void Unmap() override;
 
   // Trusted
-  virtual int32_t GetSharedMemory(int* handle) OVERRIDE;
+  virtual int32_t GetSharedMemory(int* handle) override;
 
  private:
   base::SharedMemory shm_;