Force inline Math.random.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/85483002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18047 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/math.js

@@ -348,6 +348,7 @@ function SetUpMath() {
     "imul", MathImul
   ));
 
+  %SetInlineBuiltinFlag(MathRandom);
   %SetInlineBuiltinFlag(MathSin);
   %SetInlineBuiltinFlag(MathCos);
   %SetInlineBuiltinFlag(MathTan);