Implement a shell of FindRequestManager, and hook it up to WebContentsImpl.

content/browser/web_contents/web_contents_impl.h

 // Copyright (c) 2012 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 CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 
 #include <stdint.h>
 
 #include <functional>
@@ skipping 38 matching lines @@
 #include "ui/gfx/geometry/rect_f.h"
 #include "ui/gfx/geometry/size.h"
 
 struct ViewHostMsg_DateTimeDialogValue_Params;
 
 namespace content {
 class BrowserPluginEmbedder;
 class BrowserPluginGuest;
 class DateTimeChooserAndroid;
 class DownloadItem;
+class FindRequestManager;
 class GeolocationServiceContext;
 class InterstitialPageImpl;
 class JavaScriptDialogManager;
 class LoaderIOThreadNotifier;
 class ManifestManagerHost;
 class MediaWebContentsObserver;
 class PluginContentOriginWhitelist;
 class PowerSaveBlocker;
 class RenderViewHost;
 class RenderViewHostDelegateView;
@@ skipping 308 matching lines @@
   void ExitFullscreen(bool will_cause_resize) override;
   void ResumeLoadingCreatedWebContents() override;
   void OnMediaSessionStateChanged();
   void ResumeMediaSession() override;
   void SuspendMediaSession() override;
   void StopMediaSession() override;
 
 #if defined(OS_ANDROID)
   base::android::ScopedJavaLocalRef<jobject> GetJavaWebContents() override;
   virtual WebContentsAndroid* GetWebContentsAndroid();
+  void ActivateNearestFindResult(float x, float y) override;
+  void RequestFindMatchRects(int current_version) override;
 #elif defined(OS_MACOSX)
   void SetAllowOtherViews(bool allow) override;
   bool GetAllowOtherViews() override;
 #endif
 
   // Implementation of PageNavigator.
   WebContents* OpenURL(const OpenURLParams& params) override;
 
   // Implementation of IPC::Sender.
   bool Send(IPC::Message* message) override;
@@ skipping 342 matching lines @@
                            LoadResourceFromMemoryCacheWithEmptySecurityInfo);
   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest,
                            ResetJavaScriptDialogOnUserNavigate);
   FRIEND_TEST_ALL_PREFIXES(FormStructureBrowserTest, HTMLFiles);
   FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest, HistoryNavigate);
   FRIEND_TEST_ALL_PREFIXES(RenderFrameHostManagerTest, PageDoesBackAndReload);
   FRIEND_TEST_ALL_PREFIXES(SitePerProcessBrowserTest, CrossSiteIframe);
   FRIEND_TEST_ALL_PREFIXES(SitePerProcessAccessibilityBrowserTest,
                            CrossSiteIframeAccessibility);
 
+  // So FindRequestManager can access FindReply/FindMatchRectsReply.
+  friend class FindRequestManager;

[lfg, 2016/04/04 18:57:32]

Those functions can be public in WebContentsImpl instead of this.

+
   // So InterstitialPageImpl can access SetIsLoading.
   friend class InterstitialPageImpl;
 
   // TODO(brettw) TestWebContents shouldn't exist!
   friend class TestWebContents;
 
   class DestructionObserver;
 
   // Represents a WebContents node in a tree of WebContents structure.
   //
@@ skipping 13 matching lines @@
 
     void ConnectToOuterWebContents(WebContentsImpl* outer_web_contents,
                                    RenderFrameHostImpl* outer_contents_frame);
 
     WebContentsImpl* outer_web_contents() { return outer_web_contents_; }
     int outer_contents_frame_tree_node_id() {
       return outer_contents_frame_tree_node_id_;
     }
 
    private:
-    // The outer Webontents.
+    // The outer WebContents.
     WebContentsImpl* outer_web_contents_;
     // The ID of the FrameTreeNode in outer WebContents that is hosting us.
     int outer_contents_frame_tree_node_id_;
     // List of inner WebContents that we host.
     ChildrenSet inner_web_contents_tree_nodes_;
   };
 
   // See WebContents::Create for a description of these parameters.
   WebContentsImpl(BrowserContext* browser_context);
 
@@ skipping 77 matching lines @@
                                    bool user_gesture);
   void OnFindReply(int request_id,
                    int number_of_matches,
                    const gfx::Rect& selection_rect,
                    int active_match_ordinal,
                    bool final_update);
 #if defined(OS_ANDROID)
   void OnFindMatchRectsReply(int version,
                              const std::vector<gfx::RectF>& rects,
                              const gfx::RectF& active_rect);
-
+  void OnGetNearestFindResultReply(int request_id, float distance);
   void OnOpenDateTimeDialog(
       const ViewHostMsg_DateTimeDialogValue_Params& value);
 #endif
   void OnDomOperationResponse(const std::string& json_string);
   void OnAppCacheAccessed(const GURL& manifest_url, bool blocked_by_policy);
   void OnOpenColorChooser(int color_chooser_id,
                           SkColor color,
                           const std::vector<ColorSuggestion>& suggestions);
   void OnEndColorChooser(int color_chooser_id);
   void OnSetSelectedColorInColorChooser(int color_chooser_id, SkColor color);
@@ skipping 133 matching lines @@
 
   // Internal helper to create WebUI objects associated with |this|. |url| is
   // used to determine which WebUI should be created (if any). |frame_name|
   // corresponds to the name of a frame that the WebUI should be created for (or
   // the main frame if empty).
   WebUI* CreateWebUI(const GURL& url, const std::string& frame_name);
 
   void SetJavaScriptDialogManagerForTesting(
       JavaScriptDialogManager* dialog_manager);
 
+  // Returns the FindRequestManager, or creates one if it doesn't already exist.
+  FindRequestManager* GetOrCreateFindRequestManager();
+
+  // Called by FindRequestManager when find replies come in from a renderer
+  // process.
+  void FindReply(int request_id,
+                 int number_of_matches,
+                 const gfx::Rect& selection_rect,
+                 int active_match_ordinal,
+                 bool final_update);
+
+#if defined(OS_ANDROID)
+  // Called by FindRequestManager when all of the match rects are in.
+  void FindMatchRectsReply(int version,
+                           const std::vector<gfx::RectF>& rects,
+                           const gfx::RectF& active_rect);
+#endif
+
   // Data for core operation ---------------------------------------------------
 
   // Delegate for notifying our owner about stuff. Not owned by us.
   WebContentsDelegate* delegate_;
 
   // Handles the back/forward list and loading.
   NavigationControllerImpl controller_;
 
   // The corresponding view.
   scoped_ptr<WebContentsView> view_;
@@ skipping 31 matching lines @@
   // Manages the frame tree of the page and process swaps in each node.
   FrameTree frame_tree_;
 
   // If this WebContents is part of a "tree of WebContents", then this contains
   // information about the structure.
   scoped_ptr<WebContentsTreeNode> node_;
 
   // SavePackage, lazily created.
   scoped_refptr<SavePackage> save_package_;
 
+  // Manages/coordinates find-in-page requests. Created lazily.
+  scoped_ptr<FindRequestManager> find_request_manager_;
+
   // Data for loading state ----------------------------------------------------
 
   // Indicates whether the current load is to a different document. Only valid
   // if is_loading_ is true.
   bool is_load_to_different_document_;
 
   // Indicates if the tab is considered crashed.
   base::TerminationStatus crashed_status_;
   int crashed_error_code_;
 
@@ skipping 248 matching lines @@
   // Adds/removes a callback called on creation of each new WebContents.
   static void AddCreatedCallbackForTesting(const CreatedCallback& callback);
   static void RemoveCreatedCallbackForTesting(const CreatedCallback& callback);
 
   DISALLOW_COPY_AND_ASSIGN(FriendZone);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_