Revert of Revert of Hook up more import/exports in natives.

src/string.js

Index: src/string.js
diff --git a/src/string.js b/src/string.js
index e4683b9abff1796c24bf1d33951bc96674747a44..9798846dc7be3e8e74012fa8be23e259857a162d 100644
--- a/src/string.js
+++ b/src/string.js
@@ -16,10 +16,16 @@
 
 var MathMax;
 var MathMin;
+var RegExpExec;
+var RegExpExecNoTests;
+var RegExpLastMatchInfo;
 
 utils.Import(function(from) {
   MathMax = from.MathMax;
   MathMin = from.MathMin;
+  RegExpExec = from.RegExpExec;
+  RegExpExecNoTests = from.RegExpExecNoTests;
+  RegExpLastMatchInfo = from.RegExpLastMatchInfo;
 });
 
 //-------------------------------------------------------------------
@@ -162,15 +168,15 @@
     // value is discarded.
     var lastIndex = regexp.lastIndex;
     TO_INTEGER_FOR_SIDE_EFFECT(lastIndex);
-    if (!regexp.global) return $regexpExecNoTests(regexp, subject, 0);
-    var result = %StringMatch(subject, regexp, $regexpLastMatchInfo);
+    if (!regexp.global) return RegExpExecNoTests(regexp, subject, 0);
+    var result = %StringMatch(subject, regexp, RegExpLastMatchInfo);
     if (result !== null) $regexpLastMatchInfoOverride = null;
     regexp.lastIndex = 0;
     return result;
   }
   // Non-regexp argument.
   regexp = new GlobalRegExp(regexp);
-  return $regexpExecNoTests(regexp, subject, 0);
+  return RegExpExecNoTests(regexp, subject, 0);
 }
 
 
@@ -195,7 +201,7 @@
 }
 
 
-// This has the same size as the $regexpLastMatchInfo array, and can be used
+// This has the same size as the RegExpLastMatchInfo array, and can be used
 // for functions that expect that structure to be returned.  It is used when
 // the needle is a string rather than a regexp.  In this case we can't update
 // lastMatchArray without erroneously affecting the properties on the global
@@ -237,7 +243,7 @@
 
       if (!search.global) {
         // Non-global regexp search, string replace.
-        var match = $regexpExec(search, subject, 0);
+        var match = RegExpExec(search, subject, 0);
         if (match == null) {
           search.lastIndex = 0
           return subject;
@@ -246,7 +252,7 @@
           return %_SubString(subject, 0, match[CAPTURE0]) +
                  %_SubString(subject, match[CAPTURE1], subject.length)
         }
-        return ExpandReplacement(replace, subject, $regexpLastMatchInfo,
+        return ExpandReplacement(replace, subject, RegExpLastMatchInfo,
                                  %_SubString(subject, 0, match[CAPTURE0])) +
                %_SubString(subject, match[CAPTURE1], subject.length);
       }
@@ -255,17 +261,17 @@
       search.lastIndex = 0;
       if ($regexpLastMatchInfoOverride == null) {
         return %StringReplaceGlobalRegExpWithString(
-            subject, search, replace, $regexpLastMatchInfo);
+            subject, search, replace, RegExpLastMatchInfo);
       } else {
         // We use this hack to detect whether StringReplaceRegExpWithString
         // found at least one hit. In that case we need to remove any
         // override.
-        var saved_subject = $regexpLastMatchInfo[LAST_SUBJECT_INDEX];
-        $regexpLastMatchInfo[LAST_SUBJECT_INDEX] = 0;
+        var saved_subject = RegExpLastMatchInfo[LAST_SUBJECT_INDEX];
+        RegExpLastMatchInfo[LAST_SUBJECT_INDEX] = 0;
         var answer = %StringReplaceGlobalRegExpWithString(
-            subject, search, replace, $regexpLastMatchInfo);
-        if (%_IsSmi($regexpLastMatchInfo[LAST_SUBJECT_INDEX])) {
-          $regexpLastMatchInfo[LAST_SUBJECT_INDEX] = saved_subject;
+            subject, search, replace, RegExpLastMatchInfo);
+        if (%_IsSmi(RegExpLastMatchInfo[LAST_SUBJECT_INDEX])) {
+          RegExpLastMatchInfo[LAST_SUBJECT_INDEX] = saved_subject;
         } else {
           $regexpLastMatchInfoOverride = null;
         }
@@ -431,7 +437,7 @@
   }
   var res = %RegExpExecMultiple(regexp,
                                 subject,
-                                $regexpLastMatchInfo,
+                                RegExpLastMatchInfo,
                                 resultArray);
   regexp.lastIndex = 0;
   if (IS_NULL(res)) {
@@ -440,7 +446,7 @@
     return subject;
   }
   var len = res.length;
-  if (NUMBER_OF_CAPTURES($regexpLastMatchInfo) == 2) {
+  if (NUMBER_OF_CAPTURES(RegExpLastMatchInfo) == 2) {
     // If the number of captures is two then there are no explicit captures in
     // the regexp, just the implicit capture that captures the whole match.  In
     // this case we can simplify quite a bit and end up with something faster.
@@ -494,7 +500,7 @@
 
 
 function StringReplaceNonGlobalRegExpWithFunction(subject, regexp, replace) {
-  var matchInfo = $regexpExec(regexp, subject, 0);
+  var matchInfo = RegExpExec(regexp, subject, 0);
   if (IS_NULL(matchInfo)) {
     regexp.lastIndex = 0;
     return subject;
@@ -542,7 +548,7 @@
   } else {
     regexp = new GlobalRegExp(re);
   }
-  var match = $regexpExec(regexp, TO_STRING_INLINE(this), 0);
+  var match = RegExpExec(regexp, TO_STRING_INLINE(this), 0);
   if (match) {
     return match[CAPTURE0];
   }
@@ -628,7 +634,7 @@
 
 function StringSplitOnRegExp(subject, separator, limit, length) {
   if (length === 0) {
-    if ($regexpExec(separator, subject, 0, 0) != null) {
+    if (RegExpExec(separator, subject, 0, 0) != null) {
       return [];
     }
     return [subject];
@@ -647,7 +653,7 @@
       break;
     }
 
-    var matchInfo = $regexpExec(separator, subject, startIndex);
+    var matchInfo = RegExpExec(separator, subject, startIndex);
     if (matchInfo == null || length === (startMatch = matchInfo[CAPTURE0])) {
       result[result.length] = %_SubString(subject, currentIndex, length);
       break;
@@ -1124,14 +1130,14 @@
     GlobalString.prototype, "constructor", GlobalString, DONT_ENUM);
 
 // Set up the non-enumerable functions on the String object.
-$installFunctions(GlobalString, DONT_ENUM, [
+utils.InstallFunctions(GlobalString, DONT_ENUM, [
   "fromCharCode", StringFromCharCode,
   "fromCodePoint", StringFromCodePoint,
   "raw", StringRaw
 ]);
 
 // Set up the non-enumerable functions on the String prototype object.
-$installFunctions(GlobalString.prototype, DONT_ENUM, [
+utils.InstallFunctions(GlobalString.prototype, DONT_ENUM, [
   "valueOf", StringValueOf,
   "toString", StringToString,
   "charAt", StringCharAtJS,