Create a internal, global native context used only for generated code stubs

src/runtime.js

Index: src/runtime.js
diff --git a/src/runtime.js b/src/runtime.js
index fa71432883a8c7d883741db0f26f58e356158c84..e5ac2210528c7ef46d58f05de1cb0b41468498c2 100644
--- a/src/runtime.js
+++ b/src/runtime.js
@@ -63,10 +63,6 @@ var TO_NUMBER;
 var TO_STRING;
 var TO_NAME;
 
-var StringLengthTFStub;
-var StringAddTFStub;
-var MathFloorStub;
-
 var $defaultNumber;
 var $defaultString;
 var $NaN;
@@ -751,52 +747,6 @@ TO_NAME = function TO_NAME() {
 }
 
 
-/* -----------------------------------------------
-   - - -   J a v a S c r i p t   S t u b s   - - -
-   -----------------------------------------------
-*/
-
-StringLengthTFStub = function StringLengthTFStub(call_conv, minor_key) {
-  var stub = function(receiver, name, i, v) {
-    // i and v are dummy parameters mandated by the InterfaceDescriptor,
-    // (LoadWithVectorDescriptor).
-    return %_StringGetLength(%_JSValueGetValue(receiver));
-  }
-  return stub;
-}
-
-StringAddTFStub = function StringAddTFStub(call_conv, minor_key) {
-  var stub = function(left, right) {
-    return %StringAdd(left, right);
-  }
-  return stub;
-}
-
-MathFloorStub = function MathFloorStub(call_conv, minor_key) {
-  var stub = function(f, i, v) {
-    // |f| is calling function's JSFunction
-    // |i| is TypeFeedbackVector slot # of callee's CallIC for Math.floor call
-    // |v| is the value to floor
-    var r = %_MathFloor(+v);
-    if (%_IsMinusZero(r)) {
-      // Collect type feedback when the result of the floor is -0. This is
-      // accomplished by storing a sentinel in the second, "extra"
-      // TypeFeedbackVector slot corresponding to the Math.floor CallIC call in
-      // the caller's TypeVector.
-      %_FixedArraySet(%_GetTypeFeedbackVector(f), ((i|0)+1)|0, 1);
-      return -0;
-    }
-    // Return integers in smi range as smis.
-    var trunc = r|0;
-    if (trunc === r) {
-      return trunc;
-    }
-    return r;
-  }
-  return stub;
-}
-
-
 /* -------------------------------------
    - - -   C o n v e r s i o n s   - - -
    -------------------------------------