Find working in app_shell.

chrome/browser/guest_view/web_view/chrome_web_view_guest_delegate.h

 // Copyright 2014 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 CHROME_BROWSER_GUEST_VIEW_WEB_VIEW_CHROME_WEB_VIEW_GUEST_DELEGATE_H_
 #define CHROME_BROWSER_GUEST_VIEW_WEB_VIEW_CHROME_WEB_VIEW_GUEST_DELEGATE_H_
 
 #include "chrome/browser/extensions/api/web_view/chrome_web_view_internal_api.h"
-#include "extensions/browser/guest_view/web_view/web_view_find_helper.h"
 #include "extensions/browser/guest_view/web_view/web_view_guest.h"
 #include "extensions/browser/guest_view/web_view/web_view_guest_delegate.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
 #endif
 
 class RenderViewContextMenu;
 
 namespace ui {
 class SimpleMenuModel;
 }  // namespace ui
 
 class ChromeWebViewGuestDelegate : public extensions::WebViewGuestDelegate {
  public :
   explicit ChromeWebViewGuestDelegate(

[Ken Rockot(use gerrit already), 2014/09/17 22:17:31]

Tangential comment: Might be worth adding a note here that web_view_guest must
outlive - and is not owned by - the delegate instance.

[lfg, 2014/09/17 22:34:42]

No sure I followed this. The stronger guarantee here, is that the delegate is
actually owned by the web_view_guest, so that guarantees that the web_view_guest
will outlive it.

       extensions::WebViewGuest* web_view_guest);
   virtual ~ChromeWebViewGuestDelegate();
 
   // WebViewGuestDelegate implementation.
-  virtual void Find(
-      const base::string16& search_text,
-      const blink::WebFindOptions& options,
-      extensions::WebViewInternalFindFunction* find_function)
-          OVERRIDE;
-  virtual void FindReply(content::WebContents* source,
-                         int request_id,
-                         int number_of_matches,
-                         const gfx::Rect& selection_rect,
-                         int active_match_ordinal,
-                         bool final_update) OVERRIDE;
   virtual double GetZoom() OVERRIDE;
   virtual bool HandleContextMenu(
       const content::ContextMenuParams& params) OVERRIDE;
   virtual void OnAttachWebViewHelpers(content::WebContents* contents) OVERRIDE;
   virtual void OnEmbedderDestroyed() OVERRIDE;
   virtual void OnDidCommitProvisionalLoadForFrame(bool is_main_frame) OVERRIDE;
   virtual void OnDidInitialize() OVERRIDE;
   virtual void OnDocumentLoadedInFrame(
       content::RenderFrameHost* render_frame_host) OVERRIDE;
   virtual void OnGuestDestroyed() OVERRIDE;
-  virtual void OnRenderProcessGone() OVERRIDE;
   virtual void OnSetZoom(double zoom_factor) OVERRIDE;
   virtual void OnShowContextMenu(
       int request_id,
       const MenuItemVector* items) OVERRIDE;
-  virtual void StopFinding(content::StopFindAction) OVERRIDE;
+
+  extensions::WebViewGuest* web_view_guest() const { return web_view_guest_; }
 
  private:
-  friend void extensions::WebViewFindHelper::DispatchFindUpdateEvent(
-      bool canceled,
-      bool final_update);
-
   content::WebContents* guest_web_contents() const {
     return web_view_guest()->web_contents();
   }
 
   // Returns the top level items (ignoring submenus) as Value.
   static scoped_ptr<base::ListValue> MenuModelToValue(
       const ui::SimpleMenuModel& menu_model);
 
   void InjectChromeVoxIfNeeded(content::RenderViewHost* render_view_host);
 
 #if defined(OS_CHROMEOS)
   // Notification of a change in the state of an accessibility setting.
   void OnAccessibilityStatusChanged(
       const chromeos::AccessibilityStatusEventDetails& details);
 #endif
 
-  // Handles find requests and replies for the webview find API.
-  extensions::WebViewFindHelper find_helper_;
-
   // A counter to generate a unique request id for a context menu request.
   // We only need the ids to be unique for a given WebViewGuest.
   int pending_context_menu_request_id_;
 
   // Set to |true| if ChromeVox was already injected in main frame.
   bool chromevox_injected_;
 
   // Stores the current zoom factor.
   double current_zoom_factor_;
 
   // Holds the RenderViewContextMenu that has been built but yet to be
   // shown. This is .Reset() after ShowContextMenu().
   scoped_ptr<RenderViewContextMenu> pending_menu_;
 
 #if defined(OS_CHROMEOS)
   // Subscription to receive notifications on changes to a11y settings.
   scoped_ptr<chromeos::AccessibilityStatusSubscription>
       accessibility_subscription_;
 #endif
 
+  extensions::WebViewGuest* const web_view_guest_;
+
   DISALLOW_COPY_AND_ASSIGN(ChromeWebViewGuestDelegate);
 };
 
 #endif  // CHROME_BROWSER_GUEST_VIEW_WEB_VIEW_CHROME_WEB_VIEW_GUEST_DELEGATE_H_