Allow view-source of pages fully-blocked by Blink's XSS filter.

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 4728e229c40b8a76dda82f08ff20f162195e4728..315435d35b786f89a571ea441e7e0d2dcf029d29 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -523,6 +523,7 @@ bool WebContentsImpl::OnMessageReceived(RenderViewHost* render_view_host,
                         OnDidDisplayInsecureContent)
     IPC_MESSAGE_HANDLER(ViewHostMsg_DidRunInsecureContent,
                         OnDidRunInsecureContent)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_DidDetectXSS, OnDidDetectXSS)
     IPC_MESSAGE_HANDLER(ViewHostMsg_GoToEntryAtOffset, OnGoToEntryAtOffset)
     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateZoomLimits, OnUpdateZoomLimits)
     IPC_MESSAGE_HANDLER(ViewHostMsg_EnumerateDirectory, OnEnumerateDirectory)
@@ -2552,6 +2553,21 @@ void WebContentsImpl::OnDidRunInsecureContent(
       GetController().GetBrowserContext());
 }
 
+void WebContentsImpl::OnDidDetectXSS(int32 page_id,
+                                     const GURL& url,
+                                     bool blocked_entire_page) {
+  if (!blocked_entire_page)
+    return;
+
+  // Preserve the entry for a possible subsequent view-source operation.
+  int entry_index = controller_.GetEntryIndexWithPageID(
+      GetRenderViewHost()->GetSiteInstance(), page_id);
+  NavigationEntry* entry =
+      entry_index < 0 ? NULL : controller_.GetEntryAtIndex(entry_index);
+
+  controller_.SetBlockedPageEntry(entry);
+}
+
 void WebContentsImpl::OnDocumentLoadedInFrame() {
   CHECK(render_frame_message_source_);
   CHECK(!render_view_message_source_);