[WIP] Add support for Android SuggestionSpans when editing text

third_party/WebKit/public/web/WebViewClient.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 254 matching lines @@
   void convertViewportToWindow(WebRect* rect) override {}
   void convertWindowToViewport(WebFloatRect* rect) override {}
   void didHandleGestureEvent(const WebGestureEvent& event,
                              bool eventCancelled) override {}
   void didOverscroll(const WebFloatSize& overscrollDelta,
                      const WebFloatSize& accumulatedOverscroll,
                      const WebFloatPoint& positionInViewport,
                      const WebFloatSize& velocityInViewport) override {}
   void hasTouchEventHandlers(bool) override {}
   WebLayerTreeView* initializeLayerTreeView() override { return nullptr; }
+  void handlePotentialTextSuggestionTap() override {}

[dcheng, 2017/02/18 00:04:37]

Is this work supposed to be associated only with the WebView? It seems like it
should probably be associated with the WebFrameWidget, to match how the other
IME stuff works.

(We could/should even move this to a private section, since this is a new
method)

   void resetInputMethod() override {}
   WebScreenInfo screenInfo() override { return WebScreenInfo(); }
   void setTouchAction(WebTouchAction touchAction) override {}
   void showVirtualKeyboardOnElementFocus() override {}
   void showUnhandledTapUIIfNeeded(const WebPoint& tappedPosition,
                                   const WebNode& tappedNode,
                                   bool pageChanged) override {}
   void show(WebNavigationPolicy) override {}
   virtual WebWidgetClient* widgetClient() { return this; }
 
  protected:
   ~WebViewClient() {}
 };
 
 }  // namespace blink
 
 #endif