Adds support for new-tab targeted loads initiated from the renderer.

services/navigation/public/cpp/view_delegate.h

 // Copyright 2016 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 SERVICES_NAVIGATION_PUBLIC_CPP_VIEW_DELEGATE_H_
 #define SERVICES_NAVIGATION_PUBLIC_CPP_VIEW_DELEGATE_H_
 
 #include <memory>
 
 namespace gfx {
@@ skipping 18 matching lines @@
   // user input event.
   virtual void ViewCreated(View* source,
                            std::unique_ptr<View> new_view,
                            bool is_popup,
                            const gfx::Rect& requested_bounds,
                            bool user_gesture) = 0;
 
   // Called when an action within the page has requested that the View be
   // closed.
   virtual void Close(View* source) = 0;
+
+  // Called when the application in the source view wants the delegate to
+  // navigate the view according to |params|.
+  virtual void OpenURL(View* source, mojom::OpenURLParamsPtr params) = 0;
 };
 
 }  // namespace navigation
 
 #endif  // SERVICES_NAVIGATION_PUBLIC_CPP_VIEW_DELEGATE_H_