Revert of Add OnDisplayMetricsChanged in DisplayObserver.

content/browser/renderer_host/render_widget_host_view_aura.cc

Index: content/browser/renderer_host/render_widget_host_view_aura.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.cc b/content/browser/renderer_host/render_widget_host_view_aura.cc
index 7670a94ed4d4cd3f3e1da7540485fee25745c399..b02b325a545b87df62f5fe6674795eeb918e2de8 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
@@ -1528,23 +1528,22 @@
 ////////////////////////////////////////////////////////////////////////////////
 // RenderWidgetHostViewAura, gfx::DisplayObserver implementation:
 
-void RenderWidgetHostViewAura::OnDisplayAdded(
-    const gfx::Display& new_display) {
-}
-
-void RenderWidgetHostViewAura::OnDisplayRemoved(
-    const gfx::Display& old_display) {
-}
-
-void RenderWidgetHostViewAura::OnDisplayMetricsChanged(
-    const gfx::Display& display, uint32_t metrics) {
-  // The screen info should be updated regardless of the metric change.
+void RenderWidgetHostViewAura::OnDisplayBoundsChanged(
+    const gfx::Display& display) {
   gfx::Screen* screen = gfx::Screen::GetScreenFor(window_);
   if (display.id() == screen->GetDisplayNearestWindow(window_).id()) {
     UpdateScreenInfo(window_);
     current_cursor_.SetDisplayInfo(display);
     UpdateCursorIfOverSelf();
   }
+}
+
+void RenderWidgetHostViewAura::OnDisplayAdded(
+    const gfx::Display& new_display) {
+}
+
+void RenderWidgetHostViewAura::OnDisplayRemoved(
+    const gfx::Display& old_display) {
 }
 
 ////////////////////////////////////////////////////////////////////////////////