PlzNavigate: Fix the FindInPageControllerTest.SearchWithinSpecialURL browser test.

content/browser/frame_host/navigator_impl.cc

 // Copyright 2013 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/navigator_impl.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/string_util.h"
 #include "base/time/time.h"
+#include "content/browser/child_process_security_policy_impl.h"
 #include "content/browser/frame_host/debug_urls.h"
 #include "content/browser/frame_host/frame_tree.h"
 #include "content/browser/frame_host/frame_tree_node.h"
 #include "content/browser/frame_host/navigation_controller_impl.h"
 #include "content/browser/frame_host/navigation_entry_impl.h"
 #include "content/browser/frame_host/navigation_handle_impl.h"
 #include "content/browser/frame_host/navigation_request.h"
 #include "content/browser/frame_host/navigation_request_info.h"
 #include "content/browser/frame_host/navigator_delegate.h"
 #include "content/browser/frame_host/render_frame_host_impl.h"
+#include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/site_instance_impl.h"
 #include "content/browser/webui/web_ui_controller_factory_registry.h"
 #include "content/browser/webui/web_ui_impl.h"
 #include "content/common/frame_messages.h"
 #include "content/common/navigation_params.h"
 #include "content/common/page_messages.h"
 #include "content/common/site_isolation_policy.h"
 #include "content/common/view_messages.h"
 #include "content/public/browser/browser_context.h"
@@ skipping 1093 matching lines @@
                                         nullptr,  // body
                                         navigation_request->common_params(),
                                         navigation_request->request_params(),
                                         navigation_request->is_view_source());
     return;
   }
 
   frame_tree_node->CreatedNavigationRequest(std::move(scoped_request));
   navigation_request->CreateNavigationHandle(entry.GetUniqueID());
 
+  // Grant access to the process associated with the RFH to ensure that the
+  // navigation completes.
+  if (frame_tree_node->current_frame_host()->GetProcess()) {
+    ChildProcessSecurityPolicyImpl::GetInstance()->GrantRequestURL(

[nasko, 2016/10/21 21:21:07]

Why are we doing this grant here? The process is either allowed or not.

[ananta, 2016/10/21 21:53:01]

If we don't grant access here(e.g. file://), it fails in the redirect phase in
navigationrequest

+        frame_tree_node->current_frame_host()->GetProcess()->GetID(),
+        dest_url);
+  }
+
   // Have the current renderer execute its beforeunload event if needed. If it
   // is not needed then NavigationRequest::BeginNavigation should be directly
   // called instead.
   if (should_dispatch_beforeunload && !IsRendererDebugURL(dest_url)) {
     navigation_request->SetWaitingForRendererResponse();
     frame_tree_node->current_frame_host()->DispatchBeforeUnload(
         true, reload_type != ReloadType::NONE);
   } else {
     navigation_request->BeginNavigation();
   }
@@ skipping 91 matching lines @@
     if (navigation_handle)
       navigation_handle->update_entry_id_for_transfer(entry->GetUniqueID());
 
     controller_->SetPendingEntry(std::move(entry));
     if (delegate_)
       delegate_->NotifyChangedNavigationState(content::INVALIDATE_TYPE_URL);
   }
 }
 
 }  // namespace content