Standardize usage of virtual/override/final in gpu/

gpu/command_buffer/service/query_manager_unittest.cc

Index: gpu/command_buffer/service/query_manager_unittest.cc
diff --git a/gpu/command_buffer/service/query_manager_unittest.cc b/gpu/command_buffer/service/query_manager_unittest.cc
index f6335e82ae558383edf0456550097ee825cf31b2..b4f1653d55096d44a29280e749a4e8fc73681a5c 100644
--- a/gpu/command_buffer/service/query_manager_unittest.cc
+++ b/gpu/command_buffer/service/query_manager_unittest.cc
@@ -96,11 +96,9 @@ class QueryManagerTest : public GpuServiceTest {
       ClearSharedMemory();
     }
 
-    virtual ~MockCommandBufferEngine() {
-    }
+    ~MockCommandBufferEngine() override {}
 
-    virtual scoped_refptr<gpu::Buffer> GetSharedMemoryBuffer(int32 shm_id)
-        override {
+    scoped_refptr<gpu::Buffer> GetSharedMemoryBuffer(int32 shm_id) override {
       return shm_id == kSharedMemoryId ? valid_buffer_ : invalid_buffer_;
     }
 
@@ -108,23 +106,21 @@ class QueryManagerTest : public GpuServiceTest {
       memset(data_, kInitialMemoryValue, kSharedBufferSize);
     }
 
-    virtual void set_token(int32 token) override {
-      DCHECK(false);
-    }
+    void set_token(int32 token) override { DCHECK(false); }
 
-    virtual bool SetGetBuffer(int32 /* transfer_buffer_id */) override {
+    bool SetGetBuffer(int32 /* transfer_buffer_id */) override {
       DCHECK(false);
       return false;
     }
 
     // Overridden from CommandBufferEngine.
-    virtual bool SetGetOffset(int32 offset) override {
+    bool SetGetOffset(int32 offset) override {
       DCHECK(false);
       return false;
     }
 
     // Overridden from CommandBufferEngine.
-    virtual int32 GetGetOffset() override {
+    int32 GetGetOffset() override {
       DCHECK(false);
       return 0;
     }