remove some new OVERRIDE instances in ui/

BUG=417463

Review URL: https://codereview.chromium.org/636233004

Cr-Commit-Position: refs/heads/master@{#299444}

ui/app_list/cocoa/apps_grid_controller.mm

@@ -111,7 +111,7 @@ class AppsGridDelegateBridge : public AppListItemListObserver {
     [parent_ listItemMovedFromIndex:from_index
                        toModelIndex:to_index];
   }
-  virtual void OnAppListItemHighlight(size_t index, bool highlight) OVERRIDE {
+  virtual void OnAppListItemHighlight(size_t index, bool highlight) override {
     // NSCollectionView (or -[AppsGridController scrollToPage]) ensures only one
     // item is highlighted, so clearing a highlight isn't necessary.
     if (!highlight)

ui/compositor/compositor.cc

@@ -74,15 +74,15 @@ class SatisfySwapPromise : public cc::SwapPromise {
   explicit SatisfySwapPromise(uint32_t id) : id_(id) {}
 
  private:
-  virtual void DidSwap(cc::CompositorFrameMetadata* metadata) OVERRIDE {
+  virtual void DidSwap(cc::CompositorFrameMetadata* metadata) override {
     metadata->satisfies_sequences.push_back(id_);
   }
 
-  virtual void DidNotSwap(DidNotSwapReason reason) OVERRIDE {
+  virtual void DidNotSwap(DidNotSwapReason reason) override {
     // TODO(jbauman): Send to the SurfaceManager immediately.
     DCHECK(false);
   }
-  virtual int64 TraceId() const OVERRIDE { return 0; }
+  virtual int64 TraceId() const override { return 0; }
   uint32_t id_;
 };
 

ui/ozone/platform/dri/dri_window.h

@@ -52,8 +52,8 @@ class DriWindow : public PlatformWindow,
   virtual uint32_t DispatchEvent(const PlatformEvent& event) override;
 
   // ChannelObserver:
-  virtual void OnChannelEstablished() OVERRIDE;
-  virtual void OnChannelDestroyed() OVERRIDE;
+  virtual void OnChannelEstablished() override;
+  virtual void OnChannelDestroyed() override;
 
  private:
   PlatformWindowDelegate* delegate_;   // Not owned.

ui/views/widget/native_widget_mac_interactive_uitest.mm

@@ -51,7 +51,7 @@ class NativeWidgetMacInteractiveUITest::Observer : public TestWidgetObserver {
   Observer(NativeWidgetMacInteractiveUITest* parent, Widget* widget)
       : TestWidgetObserver(widget), parent_(parent) {}
 
-  virtual void OnWidgetActivationChanged(Widget* widget, bool active) OVERRIDE {
+  virtual void OnWidgetActivationChanged(Widget* widget, bool active) override {
     if (active)
       parent_->activationCount_++;
     else