Support plugin version mid-portions with leading zeros.

base/version.cc

Index: base/version.cc
diff --git a/base/version.cc b/base/version.cc
index 6318b350edcab328feb593a029534ae50b5b84b0..77cbe6ada505784ff10f2c75f43714b8dacf1131 100644
--- a/base/version.cc
+++ b/base/version.cc
@@ -31,6 +31,8 @@ bool ParseVersionNumbers(const std::string& version_str,
 
   for (std::vector<std::string>::const_iterator it = numbers.begin();
        it != numbers.end(); ++it) {
+    if (StartsWithASCII(*it, "+", false))
+      return false;
     int num;
     if (!StringToInt(*it, &num))
       return false;
@@ -42,10 +44,6 @@ bool ParseVersionNumbers(const std::string& version_str,
     if (num > max)
       return false;
 
-    // This throws out things like +3, or 032.
-    if (IntToString(num) != *it)
-      return false;
-
     parsed->push_back(static_cast<uint16>(num));
   }
   return true;