PlzNavigate: make ctrl+click works.

content/renderer/render_frame_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/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 5115 matching lines @@
       pending_navigation_params_->common_params.navigation_start =
           base::TimeTicks::Now();
     }
   }
 
   // PlzNavigate: if the navigation is not synchronous, send it to the browser.
   // This includes navigations with no request being sent to the network stack.
   if (IsBrowserSideNavigationEnabled() &&
       info.urlRequest.checkForBrowserSideNavigation() &&
       ShouldMakeNetworkRequestForURL(url)) {
-    BeginNavigation(info);
-    return blink::WebNavigationPolicyHandledByClient;
+    if (info.defaultPolicy == blink::WebNavigationPolicyCurrentTab) {
+      BeginNavigation(info);
+      return blink::WebNavigationPolicyHandledByClient;
+    } else {
+      LoadURLExternally(info.urlRequest, info.defaultPolicy);
+      return blink::WebNavigationPolicyIgnore;
+    }
   }
 
   return info.defaultPolicy;
 }
 
 void RenderFrameImpl::OnGetSavableResourceLinks() {
   std::vector<GURL> resources_list;
   std::vector<SavableSubframe> subframes;
   SavableResourcesResult result(&resources_list, &subframes);
 
@@ skipping 1247 matching lines @@
   // event target. Potentially a Pepper plugin will receive the event.
   // In order to tell whether a plugin gets the last mouse event and which it
   // is, we set |pepper_last_mouse_event_target_| to null here. If a plugin gets
   // the event, it will notify us via DidReceiveMouseEvent() and set itself as
   // |pepper_last_mouse_event_target_|.
   pepper_last_mouse_event_target_ = nullptr;
 #endif
 }
 
 }  // namespace content