Revert 239759 "The comment in base64.h implies that base::Base64..."

trunk/src/net/base/keygen_handler_win.cc

Index: trunk/src/net/base/keygen_handler_win.cc
===================================================================
--- trunk/src/net/base/keygen_handler_win.cc	(revision 239920)
+++ trunk/src/net/base/keygen_handler_win.cc	(working copy)
@@ -211,7 +211,10 @@
     }
 
     std::string result;
-    base::Base64Encode(spkac, &result);
+    if (!base::Base64Encode(spkac, &result)) {
+      LOG(ERROR) << "Keygen failed: Couldn't convert signed key into base64";
+      return std::string();
+    }
 
     VLOG(1) << "Keygen succeeded";
     return result;