Standardize usage of virtual/override/final in content/renderer/

content/renderer/pepper/ppb_buffer_impl.h

Index: content/renderer/pepper/ppb_buffer_impl.h
diff --git a/content/renderer/pepper/ppb_buffer_impl.h b/content/renderer/pepper/ppb_buffer_impl.h
index b2c316b32e22aa078bdf8ecfbdbca18ebbf83d96..b2067809a2bbedbfb4d4c02415884537f2bb9d74 100644
--- a/content/renderer/pepper/ppb_buffer_impl.h
+++ b/content/renderer/pepper/ppb_buffer_impl.h
@@ -27,19 +27,19 @@ class PPB_Buffer_Impl : public ppapi::Resource,
   uint32_t size() const { return size_; }
 
   // Resource overrides.
-  virtual ppapi::thunk::PPB_Buffer_API* AsPPB_Buffer_API() override;
+  ppapi::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;
+  PP_Bool Describe(uint32_t* size_in_bytes) override;
+  PP_Bool IsMapped() override;
+  void* Map() override;
+  void Unmap() override;
 
   // Trusted.
-  virtual int32_t GetSharedMemory(int* handle) override;
+  int32_t GetSharedMemory(int* handle) override;
 
  private:
-  virtual ~PPB_Buffer_Impl();
+  ~PPB_Buffer_Impl() override;
 
   explicit PPB_Buffer_Impl(PP_Instance instance);
   bool Init(uint32_t size);