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extensions/common/constants.cc

Index: extensions/common/constants.cc
diff --git a/extensions/common/constants.cc b/extensions/common/constants.cc
index b73906121fc110e5cd1a2e0ce932aecacb2e7cc4..04671894143707b97390ef53f53797ec19d75555 100644
--- a/extensions/common/constants.cc
+++ b/extensions/common/constants.cc
@@ -5,6 +5,7 @@
 #include "extensions/common/constants.h"
 
 #include "base/files/file_path.h"
+#include "url/gurl.h"
 
 namespace extensions {
 
@@ -37,4 +38,8 @@ const base::FilePath::CharType kExtensionFileExtension[] =
 const base::FilePath::CharType kExtensionKeyFileExtension[] =
     FILE_PATH_LITERAL(".pem");
 
+bool IsSourceFromAnExtension(const base::string16& source) {
+  return GURL(source).SchemeIs(kExtensionScheme);
+}
+
 }  // namespace extensions