Send an onInstalled event for shared module update

extensions/browser/extension_system.h

Index: extensions/browser/extension_system.h
diff --git a/extensions/browser/extension_system.h b/extensions/browser/extension_system.h
index e658138c55f384289679e48daf3123112f8c05b4..0b7a34819bd9f57b99bbc5821150567457c20319 100644
--- a/extensions/browser/extension_system.h
+++ b/extensions/browser/extension_system.h
@@ -30,6 +30,7 @@ class ContentVerifier;
 class ErrorConsole;
 class EventRouter;
 class Extension;
+class ExtensionSet;
 class ExtensionWarningService;
 class InfoMap;
 class InstallVerifier;
@@ -128,6 +129,12 @@ class ExtensionSystem : public KeyedService {
 
   // Returns the content verifier, if any.
   virtual ContentVerifier* content_verifier() = 0;
+
+  // Get a set of extensions that depend on the given extension.
+  // TODO(elijahtaylor): Move SharedModuleService out of chrome/browser
+  // so it can be retrieved from ExtensionSystem directly.
+  virtual scoped_ptr<const ExtensionSet> GetDependentExtensions(

[asargent_no_longer_on_chrome, 2014/06/09 18:49:29]

nit: it looks like ExtensionSet already only holds "const Extension*" 
refpointers, so I don't think you need to have this return a const ExtensionSet.
(Since an ExtensionSet is just a collection of references to immutable things,
it's weird to pass ownership of this set but prohibit the receiver from
modifying the set)

[elijahtaylor1, 2014/06/09 20:48:34]

Done.

+      const Extension* extension) = 0;
 };
 
 }  // namespace extensions