Mojoify the RequestThumbnailForContextNode IPC message and reply

chrome/browser/ui/tab_contents/core_tab_helper.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 CHROME_BROWSER_UI_TAB_CONTENTS_CORE_TAB_HELPER_H_
 #define CHROME_BROWSER_UI_TAB_CONTENTS_CORE_TAB_HELPER_H_
 
 #include <string>
 
 #include "base/callback.h"
-#include "base/id_map.h"
 #include "base/macros.h"
+#include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
+#include "chrome/common/thumbnail_capturer.mojom.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
 #include "ui/gfx/geometry/size.h"
 #include "url/gurl.h"
 
 class CoreTabHelperDelegate;
 
 // Per-tab class to handle functionality that is core to the operation of tabs.
 class CoreTabHelper : public content::WebContentsObserver,
                       public content::WebContentsUserData<CoreTabHelper> {
  public:
-  using ContextNodeThumbnailCallback =
-      base::Callback<void(const std::string&, const gfx::Size&)>;
-
   ~CoreTabHelper() override;
 
   // Initial title assigned to NavigationEntries from Navigate.
   static base::string16 GetDefaultTitle();
 
   // Returns a human-readable description the tab's loading state.
   base::string16 GetStatusText() const;
 
   // Notification that tab closing has started.  This can be called multiple
   // times, subsequent calls are ignored.
@@ skipping 11 matching lines @@
   // Set the time during close when the tab is no longer visible.
   void OnUnloadDetachedStarted();
 
   void UpdateContentRestrictions(int content_restrictions);
 
   // Perform an image search for the image that triggered the context menu.  The
   // |src_url| is passed to the search request and is not used directly to fetch
   // the image resources.
   void SearchByImageInNewTab(content::RenderFrameHost* render_frame_host,
                              const GURL& src_url);
-  void RequestThumbnailForContextNode(
-      content::RenderFrameHost* render_frame_host,
-      int minimum_size,
-      gfx::Size maximum_size,
-      const ContextNodeThumbnailCallback& callback);
 
   CoreTabHelperDelegate* delegate() const { return delegate_; }
   void set_delegate(CoreTabHelperDelegate* d) { delegate_ = d; }
 
   void set_new_tab_start_time(const base::TimeTicks& time) {
     new_tab_start_time_ = time;
   }
 
   base::TimeTicks new_tab_start_time() const { return new_tab_start_time_; }
   int content_restrictions() const { return content_restrictions_; }
 
  private:
   explicit CoreTabHelper(content::WebContents* web_contents);
   friend class content::WebContentsUserData<CoreTabHelper>;
 
   static bool GetStatusTextForWebContents(base::string16* status_text,
                                           content::WebContents* source);
 
   // content::WebContentsObserver overrides:
   void DidStartLoading() override;
   void WasShown() override;
   void WebContentsDestroyed() override;
   void BeforeUnloadFired(const base::TimeTicks& proceed_time) override;
   void BeforeUnloadDialogCancelled() override;
-  bool OnMessageReceived(const IPC::Message& message,
-                         content::RenderFrameHost* render_frame_host) override;
 
-  void OnRequestThumbnailForContextNodeACK(const std::string& thumbnail_data,
-                                           const gfx::Size& original_size,
-                                           int callback_id);
-  void DoSearchByImageInNewTab(const GURL& src_url,
-                               const std::string& thumbnail_data,
-                               const gfx::Size& original_size);
+  void DoSearchByImageInNewTab(
+      chrome::mojom::ThumbnailCapturerPtr thumbnail_capturer,
+      const GURL& src_url,
+      const std::vector<uint8_t>& thumbnail_data,
+      const gfx::Size& original_size);
 
   // Delegate for notifying our owner about stuff. Not owned by us.
   CoreTabHelperDelegate* delegate_;
 
   // The time when we started to create the new tab page.  This time is from
   // before we created this WebContents.
   base::TimeTicks new_tab_start_time_;
 
   // The time that we started to close this WebContents.
   base::TimeTicks close_start_time_;
 
   // The time when onbeforeunload ended.
   base::TimeTicks before_unload_end_time_;
 
   // The time when the tab was removed from view during close.
   base::TimeTicks unload_detached_start_time_;
 
   // Content restrictions, used to disable print/copy etc based on content's
   // (full-page plugins for now only) permissions.
   int content_restrictions_;
 
-  IDMap<std::unique_ptr<ContextNodeThumbnailCallback>> thumbnail_callbacks_;
+  base::WeakPtrFactory<CoreTabHelper> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CoreTabHelper);
 };
 
 #endif  // CHROME_BROWSER_UI_TAB_CONTENTS_CORE_TAB_HELPER_H_