Do not sanitize about:blank/#foo & about:blank?foo

content/public/common/url_utils.h

Index: content/public/common/url_utils.h
diff --git a/content/public/common/url_utils.h b/content/public/common/url_utils.h
index 89ac3212c01896d10af86166ed8e9cc702f30628..71cb47becf0521e8733b4319e98747d566222d1f 100644
--- a/content/public/common/url_utils.h
+++ b/content/public/common/url_utils.h
@@ -18,6 +18,10 @@ CONTENT_EXPORT bool HasWebUIScheme(const GURL& url);
 // Check whether we can do the saving page operation for the specified URL.
 CONTENT_EXPORT bool IsSavableURL(const GURL& url);
 
+// Check whether the url is of the form about:blank, about:blank?foo or
+// about:blank/#foo.
+CONTENT_EXPORT bool IsAboutBlankURL(const GURL& url);
+
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_URL_UTILS_H_