Added code for localizing scripts CSS before injection takes place.

BUG=39899
TEST=browser_tests:ExtensionApiTest.ContentScriptCSSLocalization


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=97365

Review URL: http://codereview.chromium.org/7552028

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@97927 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/common/extensions/extension_set.h b/chrome/common/extensions/extension_set.h
index dbd16ad..a27c626 100644
--- a/chrome/common/extensions/extension_set.h
+++ b/chrome/common/extensions/extension_set.h
@@ -6,6 +6,7 @@
 #define CHROME_COMMON_EXTENSIONS_EXTENSION_SET_H_
 #pragma once
 
+#include <map>
 #include <string>
 #include <vector>
 
@@ -18,6 +19,8 @@
 // Only one extension can be in the set with a given ID.
 class ExtensionSet {
  public:
+  typedef std::pair<FilePath, std::string> ExtensionPathAndDefaultLocale;
+
   ExtensionSet();
   ~ExtensionSet();