Allow update URLs in external_extensions.json.

Doc updates will follow in another CL.

BUG=48117
TEST=ExtensionsServiceTest.(UpdatePendingExternalCrx,UpdatePendingCrxThemeMismatch,ExternalPrefProvider), ExtensionManagmentTest.ExternalUrlUpdate, manual testing.

Review URL: http://codereview.chromium.org/3005057

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@56701 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 9 insertions, 4 deletions

diff --git a/chrome/browser/extensions/external_extension_provider.h b/chrome/browser/extensions/external_extension_provider.h
index 7291f5b..eddea62 100644
--- a/chrome/browser/extensions/external_extension_provider.h
+++ b/chrome/browser/extensions/external_extension_provider.h
@@ -24,10 +24,15 @@ class ExternalExtensionProvider {
   // is not transferred to the visitor.
   class Visitor {
    public:
-     virtual void OnExternalExtensionFound(const std::string& id,
-                                           const Version* version,
-                                           const FilePath& path,
-                                           Extension::Location location) = 0;
+     virtual void OnExternalExtensionFileFound(
+         const std::string& id,
+         const Version* version,
+         const FilePath& path,
+         Extension::Location location) = 0;
+
+     virtual void OnExternalExtensionUpdateUrlFound(
+         const std::string& id,
+         const GURL& update_url) = 0;
 
    protected:
      virtual ~Visitor() {}