Add the Chrome version as one of the things we check to see if...

ceee/ie/common/ceee_module_util.h

Index: ceee/ie/common/ceee_module_util.h
===================================================================
--- ceee/ie/common/ceee_module_util.h	(revision 65870)
+++ ceee/ie/common/ceee_module_util.h	(working copy)
@@ -51,10 +51,13 @@
 FilePath GetInstalledExtensionPath();
 base::Time GetInstalledExtensionTime();
 
-// Return true if the extension is outdated compared to the registry
+// Return true if extension installation should be attempted according
+// to the registry. Note that Chrome will silently fail installation of
+// an extension version older than what is already installed.
 bool NeedToInstallExtension();
 
-// Install an extension and sets the right registry values
+// Sets the right registry values to cache the fact that we asked
+// Chrome to install an extension.
 void SetInstalledExtensionPath(const FilePath& path);
 
 // Returns true if the given path ends with .crx or is empty (as an