Remove stale code to delete the metro user data dir. It never shipped.

chrome/installer/util/helper.h

Index: chrome/installer/util/helper.h
diff --git a/chrome/installer/util/helper.h b/chrome/installer/util/helper.h
index 68d873cbcf10ebdd87b210e2b5751254ff5b036f..152a160bc9012447512e0514e0f6e1b8bbe42a6e 100644
--- a/chrome/installer/util/helper.h
+++ b/chrome/installer/util/helper.h
@@ -8,7 +8,6 @@
 #define CHROME_INSTALLER_UTIL_HELPER_H_
 
 #include <string>
-#include <vector>
 
 class BrowserDistribution;
 
@@ -25,16 +24,12 @@ namespace installer {
 //                 location (Document And Settings\<user>\Local Settings...)
 base::FilePath GetChromeInstallPath(bool system_install, BrowserDistribution* dist);
 
-// Returns the path(s) to the directory that holds the user data (primary and,
-// if applicable to |dist|, alternate).  This is always inside a user's local
-// application data folder (e.g., "AppData\Local or "Local Settings\Application
-// Data" in %USERPROFILE%). Note that these are the defaults and do not take
-// into account that they can be overriden with a command line parameter.
-// |paths| may be empty on return, but is guaranteed not to contain empty paths
-// otherwise. If more than one path is returned, they are guaranteed to be
-// siblings.
-void GetChromeUserDataPaths(BrowserDistribution* dist,
-                            std::vector<base::FilePath>* paths);
+// Returns the path to the directory that holds the user data.  This is always
+// inside a user's local application data folder (e.g., "AppData\Local" or
+// "Local Settings\Application Data" in %USERPROFILE%). Note that this is the
+// default user data directory and does not take into account that it can be
+// overriden with a command line parameter.
+base::FilePath GetChromeUserDataPath(BrowserDistribution* dist);
 
 // Returns the distribution corresponding to the current process's binaries.
 // In the case of a multi-install product, this will be the CHROME_BINARIES