To fix the cross-site post submission bug.

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index c4bb81bd89f424e150f7d490c74d6878cc253710..baaa0dde695a0ccfd775d582b211ebea6e5bd18e 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -212,11 +212,8 @@ void MakeNavigateParams(const NavigationEntryImpl& entry,
   params->allow_download = !entry.IsViewSourceMode();
   params->is_post = entry.GetHasPostData();
   if(entry.GetBrowserInitiatedPostData()) {
-      params->browser_initiated_post_data.assign(
-          entry.GetBrowserInitiatedPostData()->front(),
-          entry.GetBrowserInitiatedPostData()->front() +
-              entry.GetBrowserInitiatedPostData()->size());
-
+      params->browser_initiated_post_data =
+          entry.GetBrowserInitiatedPostData();
   }
 
   if (reload_type == NavigationControllerImpl::RELOAD_ORIGINAL_REQUEST_URL &&
@@ -2875,6 +2872,26 @@ void WebContentsImpl::RequestOpenURL(RenderViewHost* rvh,
                      GlobalRequestID());
 }
 
+void WebContentsImpl::RequestOpenPostURL(
+    RenderViewHost* rvh,
+    const GURL& url,
+    const Referrer& referrer,
+    WindowOpenDisposition disposition,
+    int64 source_frame_id,
+    const ViewMsg_PostRequest_Params& request) {
+  // If this came from a swapped out RenderViewHost, we only allow the request
+  // if we are still in the same BrowsingInstance.
+  if (static_cast<RenderViewHostImpl*>(rvh)->is_swapped_out() &&
+      !rvh->GetSiteInstance()->IsRelatedSiteInstance(GetSiteInstance())) {
+    return;
+  }
+
+  // Delegate to RequestTransferURL because this is just the generic
+  // case where |old_request_id| is empty.
+  RequestTransferPostURL(url, referrer, disposition, source_frame_id,
+                     GlobalRequestID(), request);
+}
+
 void WebContentsImpl::RequestTransferURL(
     const GURL& url,
     const Referrer& referrer,
@@ -2916,6 +2933,53 @@ void WebContentsImpl::RequestTransferURL(
   }
 }
 
+void WebContentsImpl::RequestTransferPostURL(
+    const GURL& url,
+    const content::Referrer& referrer,
+    WindowOpenDisposition disposition,
+    int64 source_frame_id,
+    const GlobalRequestID& old_request_id,
+    const ViewMsg_PostRequest_Params& request) {
+  WebContents* new_contents = NULL;
+  content::PageTransition transition_type = content::PAGE_TRANSITION_LINK;
+  if (render_manager_.web_ui()) {
+    // When we're a Web UI, it will provide a page transition type for us (this
+    // is so the new tab page can specify AUTO_BOOKMARK for automatically
+    // generated suggestions).
+    //
+    // Note also that we hide the referrer for Web UI pages. We don't really
+    // want web sites to see a referrer of "chrome://blah" (and some
+    // chrome: URLs might have search terms or other stuff we don't want to
+    // send to the site), so we send no referrer.
+    OpenURLParams params(url, content::Referrer(), source_frame_id, disposition,
+        render_manager_.web_ui()->GetLinkTransitionType(),
+        false /* is_renderer_initiated */);
+    params.transferred_global_request_id = old_request_id;
+    new_contents = OpenURL(params);
+    transition_type = render_manager_.web_ui()->GetLinkTransitionType();
+  } else {
+    OpenURLParams params(url, referrer, source_frame_id, disposition,
+        content::PAGE_TRANSITION_LINK, true /* is_renderer_initiated */);
+    params.transition = content::PAGE_TRANSITION_FORM_SUBMIT;
+
+    params.browser_initiated_post_data = request.request_body;
+    params.extra_headers = request.extra_header;
+
+    params.transferred_global_request_id = old_request_id;
+    new_contents = OpenURL(params);
+  }
+  if (new_contents) {
+    // Notify observers.
+    FOR_EACH_OBSERVER(WebContentsObserver, observers_,
+                      DidOpenRequestedURL(new_contents,
+                                          url,
+                                          referrer,
+                                          disposition,
+                                          transition_type,
+                                          source_frame_id));
+  }
+}
+
 void WebContentsImpl::RouteCloseEvent(RenderViewHost* rvh) {
   // Tell the active RenderViewHost to run unload handlers and close, as long
   // as the request came from a RenderViewHost in the same BrowsingInstance.