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

content/browser/renderer_host/input/touch_emulator_unittest.cc

Index: content/browser/renderer_host/input/touch_emulator_unittest.cc
diff --git a/content/browser/renderer_host/input/touch_emulator_unittest.cc b/content/browser/renderer_host/input/touch_emulator_unittest.cc
index 498da56220af11507e81a5a3d94cd8dbe1567ddf..caaf894da23c6f1620e101b09c8ef0faa9995689 100644
--- a/content/browser/renderer_host/input/touch_emulator_unittest.cc
+++ b/content/browser/renderer_host/input/touch_emulator_unittest.cc
@@ -67,13 +67,11 @@ class TouchEmulatorTest : public testing::Test,
 #endif
   }
 
-  virtual void ForwardGestureEvent(
-      const blink::WebGestureEvent& event) override {
+  void ForwardGestureEvent(const blink::WebGestureEvent& event) override {
     forwarded_events_.push_back(event.type);
   }
 
-  virtual void ForwardEmulatedTouchEvent(
-      const blink::WebTouchEvent& event) override {
+  void ForwardEmulatedTouchEvent(const blink::WebTouchEvent& event) override {
     forwarded_events_.push_back(event.type);
     EXPECT_EQ(1U, event.touchesLength);
     EXPECT_EQ(last_mouse_x_, event.touches[0].position.x);
@@ -86,9 +84,9 @@ class TouchEmulatorTest : public testing::Test,
     }
   }
 
-  virtual void SetCursor(const WebCursor& cursor) override {}
+  void SetCursor(const WebCursor& cursor) override {}
 
-  virtual void ShowContextMenuAtPoint(const gfx::Point& point) override {}
+  void ShowContextMenuAtPoint(const gfx::Point& point) override {}
 
  protected:
   TouchEmulator* emulator() const {