Update function signatures for focused element change notifications

- Replace 'Node' in function names with 'Element'
- Replace Node/WebNode arguments with Element/WebElement
- Update arguments' variable names.

This CL has no behavior changes.

Change-Id: I5fb783ad9cf3cbe7944de933d5331f57822c8eea
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1609749
Reviewed-by: Kinuko Yasuda <[email protected]>
Reviewed-by: Bo <[email protected]>
Reviewed-by: Rouslan Solomakhin <[email protected]>
Reviewed-by: sebsg <[email protected]>
Commit-Queue: Kent Tamura <[email protected]>
Cr-Commit-Position: refs/heads/master@{#662003}
diff --git a/android_webview/renderer/aw_render_frame_ext.h b/android_webview/renderer/aw_render_frame_ext.h
index 23f95e61..389a6bf 100644
--- a/android_webview/renderer/aw_render_frame_ext.h
+++ b/android_webview/renderer/aw_render_frame_ext.h
@@ -44,7 +44,7 @@
                                 ui::PageTransition transition) override;
 
   bool OnMessageReceived(const IPC::Message& message) override;
-  void FocusedNodeChanged(const blink::WebNode& node) override;
+  void FocusedElementChanged(const blink::WebElement& element) override;
   void OnDestruct() override;
 
   void OnDocumentHasImagesRequest(uint32_t id);