Implement TouchSelectionEditing controls for OOPIF.

content/browser/frame_host/cross_process_frame_connector.cc

 // 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.
 
 #include "content/browser/frame_host/cross_process_frame_connector.h"
 
 #include "cc/surfaces/surface.h"
 #include "cc/surfaces/surface_hittest.h"
 #include "cc/surfaces/surface_manager.h"
 #include "content/browser/compositor/surface_utils.h"
@@ skipping 283 matching lines @@
            proxy_node->frame_tree()->SubtreeNodes(proxy_node)) {
         if (node != proxy_node && node->current_frame_host()->is_local_root())
           node->current_frame_host()->GetRenderWidgetHost()->SendScreenRects();
       }
     }
   }
 }
 
 RenderWidgetHostViewBase*
 CrossProcessFrameConnector::GetRootRenderWidgetHostView() {
+  // Tests may not have frame_proxy_in_parent_renderer_ set.
+  if (!frame_proxy_in_parent_renderer_)
+    return nullptr;
+
   RenderFrameHostImpl* top_host = frame_proxy_in_parent_renderer_->
       frame_tree_node()->frame_tree()->root()->current_frame_host();
 
   // This method should return the root RWHV from the top-level WebContents,
   // in the case of nested WebContents.
   while (top_host->frame_tree_node()->render_manager()->ForInnerDelegate()) {
     top_host = top_host->frame_tree_node()->render_manager()->
         GetOuterDelegateNode()->frame_tree()->root()->current_frame_host();
   }
 
@@ skipping 17 matching lines @@
 
   if (parent) {
     return static_cast<RenderWidgetHostViewBase*>(
         parent->current_frame_host()->GetView());
   }
 
   return nullptr;
 }
 
 }  // namespace content