Move didFocus from WebWidgetClient to WebViewClient.

content/renderer/render_view_impl.h

Index: content/renderer/render_view_impl.h
diff --git a/content/renderer/render_view_impl.h b/content/renderer/render_view_impl.h
index 25cfceb685950e353661e82364578711dadd28f6..47f0c2b141f54ee400d79c1ba13dca3bc4afa0ef 100644
--- a/content/renderer/render_view_impl.h
+++ b/content/renderer/render_view_impl.h
@@ -284,7 +284,6 @@ class CONTENT_EXPORT RenderViewImpl
   // blink::WebWidgetClient implementation ------------------------------------
 
   // Most methods are handled by RenderWidget.
-  void didFocus() override;
   void show(blink::WebNavigationPolicy policy) override;
   void didHandleGestureEvent(const blink::WebGestureEvent& event,
                              bool event_cancelled) override;
@@ -381,6 +380,7 @@ class CONTENT_EXPORT RenderViewImpl
   void draggableRegionsChanged() override;
   void pageImportanceSignalsChanged() override;
   void didAutoResize(const blink::WebSize& newSize) override;
+  void didFocus() override;
 
 #if defined(OS_ANDROID)
   void scheduleContentIntent(const blink::WebURL& intent,