Whitelist unreachable webdata pages for content settings

chrome/renderer/content_settings_observer.cc

Index: chrome/renderer/content_settings_observer.cc
diff --git a/chrome/renderer/content_settings_observer.cc b/chrome/renderer/content_settings_observer.cc
index fea2747a4fa9b11a3dcdf016b77f12605a785dba..8c2493b14c0d57ba4c2a440de78b1a0f10fd783f 100644
--- a/chrome/renderer/content_settings_observer.cc
+++ b/chrome/renderer/content_settings_observer.cc
@@ -319,6 +319,9 @@ bool ContentSettingsObserver::IsWhitelistedForContentSettings(WebFrame* frame) {
 bool ContentSettingsObserver::IsWhitelistedForContentSettings(
     const WebSecurityOrigin& origin,
     const GURL& document_url) {
+  if (document_url == GURL(content::kUnreachableWebDataURL))
+    return true;
+
   if (origin.isUnique())
     return false;  // Uninitialized document?