Whitelist unreachable webdata pages for content settings

chrome/renderer/content_settings_observer.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 "chrome/renderer/content_settings_observer.h"
 
 #include "chrome/common/render_messages.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/renderer/document_state.h"
 #include "content/public/renderer/navigation_state.h"
@@ skipping 301 matching lines @@
 }
 
 bool ContentSettingsObserver::IsWhitelistedForContentSettings(WebFrame* frame) {
   return IsWhitelistedForContentSettings(frame->document().securityOrigin(),
                                          frame->document().url());
 }
 
 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?
 
   if (EqualsASCII(origin.protocol(), chrome::kChromeUIScheme))
     return true;  // Browser UI elements should still work.
 
   if (EqualsASCII(origin.protocol(), chrome::kChromeDevToolsScheme))
     return true;  // DevTools UI elements should still work.
 
   if (EqualsASCII(origin.protocol(), chrome::kExtensionScheme))
     return true;
 
   if (EqualsASCII(origin.protocol(), chrome::kChromeInternalScheme))
     return true;
 
   // If the scheme is ftp: or file:, an empty file name indicates a directory
   // listing, which requires JavaScript to function properly.
   const char* kDirProtocols[] = { chrome::kFtpScheme, chrome::kFileScheme };
   for (size_t i = 0; i < arraysize(kDirProtocols); ++i) {
     if (EqualsASCII(origin.protocol(), kDirProtocols[i])) {
       return document_url.SchemeIs(kDirProtocols[i]) &&
              document_url.ExtractFileName().empty();
     }
   }
 
   return false;
 }