Add canUpdateLayout & canHandleGestureEvent to WebViewClient.

components/plugins/renderer/webview_plugin.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_PLUGINS_RENDERER_WEBVIEW_PLUGIN_H_
 #define COMPONENTS_PLUGINS_RENDERER_WEBVIEW_PLUGIN_H_
 
 #include <list>
 #include <memory>
 
@@ skipping 133 matching lines @@
                         public blink::WebFrameClient {
    public:
     WebViewHelper(WebViewPlugin* plugin,
                   const content::WebPreferences& preferences);
     ~WebViewHelper() override;
 
     blink::WebView* web_view() { return web_view_; }
 
     // WebViewClient methods:
     bool acceptsLoadDrops() override;
+    bool canHandleGestureEvent() override;
+    bool canUpdateLayout() override;
 
     // WebWidgetClient methods:
     void setToolTipText(const blink::WebString&,
                         blink::WebTextDirection) override;
     void startDragging(blink::WebReferrerPolicy,
                        const blink::WebDragData&,
                        blink::WebDragOperationsMask,
                        const blink::WebImage&,
                        const blink::WebPoint&) override;
     // TODO(ojan): Remove this override and have this class use a non-null
@@ skipping 12 matching lines @@
     // Owned by us, deleted via |close()|.
     blink::WebView* web_view_;
   };
   WebViewHelper web_view_helper_;
 
   // Should be invalidated when destroy() is called.
   base::WeakPtrFactory<WebViewPlugin> weak_factory_;
 };
 
 #endif  // COMPONENTS_PLUGINS_RENDERER_WEBVIEW_PLUGIN_H_