Add picker view for Web Share Target.

chrome/browser/ui/browser_dialogs.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_BROWSER_DIALOGS_H_
 #define CHROME_BROWSER_UI_BROWSER_DIALOGS_H_
 
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 134 matching lines @@
                                       net::URLRequest* request);
 
 // Shows the toolkit-views based BookmarkEditor.
 void ShowBookmarkEditorViews(gfx::NativeWindow parent_window,
                              Profile* profile,
                              const BookmarkEditor::EditDetails& details,
                              BookmarkEditor::Configuration configuration);
 
 void ShowPaymentRequestDialog(payments::PaymentRequest* request);
 
+// Shows the dialog to choose a share target app. |targets| is a list of app
+// titles that will be shown in a list. Calls |callback| with true if an app was
+// chosen, or false if the dialog was cancelled.
+// TODO(mgiuca): Callback should provide info about the picked app.
+void ShowWebShareTargetPickerDialog(gfx::NativeWindow parent_window,
+                                    const std::vector<base::string16>& targets,
+                                    const base::Callback<void(bool)>& callback);
+
 #if defined(OS_MACOSX)
 
 // This is a class so that it can be friended from ContentSettingBubbleContents,
 // which allows it to call SetAnchorRect().
 class ContentSettingBubbleViewsBridge {
  public:
   static void Show(gfx::NativeView parent_view,
                    ContentSettingBubbleModel* model,
                    content::WebContents* web_contents,
                    const gfx::Point& anchor);
@@ skipping 22 matching lines @@
 using BubbleShowPtr =
     void (*)(content::WebContents*,
              const std::vector<arc::ArcNavigationThrottle::AppInfo>&,
              const IntentPickerResponse&);
 
 BubbleShowPtr ShowIntentPickerBubble();
 
 #endif  // OS_CHROMEOS
 
 #endif  // CHROME_BROWSER_UI_BROWSER_DIALOGS_H_