Remove some dead app host code.

chrome/installer/util/google_update_util.h

Index: chrome/installer/util/google_update_util.h
diff --git a/chrome/installer/util/google_update_util.h b/chrome/installer/util/google_update_util.h
index 4f240afb28c0920a97f0546328a718c98b486eb3..257e007757f2d37938bb753ef61a63429c6529f2 100644
--- a/chrome/installer/util/google_update_util.h
+++ b/chrome/installer/util/google_update_util.h
@@ -27,18 +27,6 @@ bool UninstallGoogleUpdate(bool system_install);
 // GoogleUpdateSettings::ReenableAutoupdatesForApp() to do the work.
 void ElevateIfNeededToReenableUpdates();
 
-// Returns the value corresponding to |key| in untrusted data passed from
-// Google Update.  Returns an empty string if |key| is absent or if its value
-// contains non-printable characters.
-std::string GetUntrustedDataValue(const std::string& key);
-
-// Returns the value corresponding to |key| in untrusted data passed from
-// |tag|.  |tag| should be a printable list of key-value pairs, e.g.
-// "key1=value1&key2=value2".  Returns an empty string if |key| is absent or if
-// its value contains non-printable characters.
-std::string GetUntrustedDataValueFromTag(const std::string& tag,
-                                         const std::string& key);
-
 }  // namespace google_update
 
 #endif  // CHROME_INSTALLER_UTIL_GOOGLE_UPDATE_UTIL_H_