[Extensions] Add support for reporting abuse on extension uninstallation

extensions/common/extension_urls.h

Index: extensions/common/extension_urls.h
diff --git a/extensions/common/extension_urls.h b/extensions/common/extension_urls.h
index 2440a835f9c8c97712c806f215a00b5d1c643639..c651fcf7384dc0f6f9c7a70eb9579ab910570e69 100644
--- a/extensions/common/extension_urls.h
+++ b/extensions/common/extension_urls.h
@@ -70,6 +70,9 @@ GURL GetWebstoreSearchPageUrl(const std::string& query);
 // have been overridden by a command line flag for testing purposes.
 GURL GetWebstoreUpdateUrl();
 
+// Returns the url to visit to report abuse for the given |extension_id|.
+GURL GetWebstoreReportAbuseUrl(const std::string& extension_id);
+
 // Returns whether the URL is the webstore update URL (just considering host
 // and path, not scheme, query, etc.)
 bool IsWebstoreUpdateUrl(const GURL& update_url);