Don't navigate in WebContentsDelegate::OpenURLFromTab.

content/public/browser/web_contents_delegate.cc

 // 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.
 
 #include "content/public/browser/web_contents_delegate.h"
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/memory/singleton.h"
 #include "build/build_config.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/security_style_explanations.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/bindings_policy.h"
 #include "content/public/common/security_style.h"
 #include "content/public/common/url_constants.h"
 #include "ui/gfx/geometry/rect.h"
 
 namespace content {
 
 WebContentsDelegate::WebContentsDelegate() {
 }
 
 WebContents* WebContentsDelegate::OpenURLFromTab(WebContents* source,
                                                  const OpenURLParams& params) {
-  // This default implementation only handles CURRENT_TAB.
-  if (params.disposition != CURRENT_TAB)
-    return nullptr;
-
-  NavigationController::LoadURLParams load_url_params(params.url);
-  load_url_params.source_site_instance = params.source_site_instance;
-  load_url_params.transition_type = params.transition;
-  load_url_params.frame_tree_node_id = params.frame_tree_node_id;
-  load_url_params.referrer = params.referrer;
-  load_url_params.redirect_chain = params.redirect_chain;
-  load_url_params.extra_headers = params.extra_headers;
-  load_url_params.is_renderer_initiated = params.is_renderer_initiated;
-  load_url_params.transferred_global_request_id =
-      params.transferred_global_request_id;
-  load_url_params.should_replace_current_entry =
-      params.should_replace_current_entry;
-
-  // Only allows the browser-initiated navigation to use POST.
-  if (params.uses_post && !params.is_renderer_initiated) {
-    load_url_params.load_type =
-        NavigationController::LOAD_TYPE_BROWSER_INITIATED_HTTP_POST;
-    load_url_params.browser_initiated_post_data =
-        params.browser_initiated_post_data;
-  }
-
-  source->GetController().LoadURLWithParams(load_url_params);
-  return source;
+  return nullptr;
 }
 
 bool WebContentsDelegate::ShouldTransferNavigation() {
   return true;
 }
 
 bool WebContentsDelegate::IsPopupOrPanel(const WebContents* source) const {
   return false;
 }
 
@@ skipping 216 matching lines @@
     SecurityStyleExplanations* security_style_explanations) {
   return content::SECURITY_STYLE_UNKNOWN;
 }
 
 void WebContentsDelegate::ShowCertificateViewerInDevTools(
     WebContents* web_contents,
     int cert_id) {
 }
 
 }  // namespace content