Make GetCommandExecuteImplClsid return the CLSID as a string directly.

chrome/installer/util/browser_distribution.h

Index: chrome/installer/util/browser_distribution.h
diff --git a/chrome/installer/util/browser_distribution.h b/chrome/installer/util/browser_distribution.h
index 003faad205997594c7de228718c2f74a540f7c50..f4b187cfd607e1415b63be70dd06dbcadf6c2a9e 100644
--- a/chrome/installer/util/browser_distribution.h
+++ b/chrome/installer/util/browser_distribution.h
@@ -140,10 +140,9 @@ class BrowserDistribution {
 
   virtual bool GetChromeChannel(base::string16* channel);
 
-  // Returns true if this distribution includes a DelegateExecute verb handler,
-  // and provides the CommandExecuteImpl class UUID if |handler_class_uuid| is
-  // non-NULL.
-  virtual bool GetCommandExecuteImplClsid(base::string16* handler_class_uuid);
+  // Returns the CommandExecuteImpl class UUID (or empty string if this
+  // distribution doesn't include a DelegateExecute verb handler).
+  virtual base::string16 GetCommandExecuteImplClsid();
 
   virtual void UpdateInstallStatus(bool system_install,
       installer::ArchiveType archive_type,