Don't navigate in WebContentsDelegate::OpenURLFromTab.

content/public/browser/web_contents_delegate.cc

Index: content/public/browser/web_contents_delegate.cc
diff --git a/content/public/browser/web_contents_delegate.cc b/content/public/browser/web_contents_delegate.cc
index e247f5b0ae2c8750c59f8d4734144e2d7db913db..0a1d3f13480a1a8270755bf9f3d5cb78c3fabafa 100644
--- a/content/public/browser/web_contents_delegate.cc
+++ b/content/public/browser/web_contents_delegate.cc
@@ -23,33 +23,7 @@ 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() {