Bring back execScript

Undoing
http://codereview.chromium.org/7060008
https://groups.google.com/forum/#!topic/v8-dev/JTRHrPHFBts

deps/v8/src/v8natives.js

@@ -147,6 +147,17 @@ function GlobalEval(x) {
 }
 
 
+// execScript for IE compatibility.
+function GlobalExecScript(expr, lang) {
+  // NOTE: We don't care about the character casing.
+  if (!lang || /javascript/i.test(lang)) {
+    var f = %CompileString(ToString(expr));
+    f.call(%GlobalReceiver(global));
+  }
+  return null;
+}
+
+
 // ----------------------------------------------------------------------------
 
 
@@ -166,7 +177,8 @@ function SetupGlobal() {
     "isFinite", GlobalIsFinite,
     "parseInt", GlobalParseInt,
     "parseFloat", GlobalParseFloat,
-    "eval", GlobalEval
+    "eval", GlobalEval,
+    "execScript", GlobalExecScript
   ));
 }
 

deps/v8/test/mjsunit/execScript-case-insensitive.js

@@ -0,0 +1,34 @@
+// Copyright 2008 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+var x  = 0;
+execScript('x = 1', 'javascript');
+assertEquals(1, x);
+
+execScript('x = 2', 'JavaScript');
+assertEquals(2, x);
+

deps/v8/test/mjsunit/function-names.js

@@ -128,6 +128,6 @@ var globalFunctions = [
     "encodeURI", "encodeURIComponent", "Error", "TypeError",
     "RangeError", "SyntaxError", "ReferenceError", "EvalError",
     "URIError", "isNaN", "isFinite", "parseInt", "parseFloat",
-    "eval"];
+    "eval", "execScript"];
 
 TestFunctionNames(this, globalFunctions);

deps/v8/test/mjsunit/regress/regress-1341167.js

@@ -0,0 +1,33 @@
+// Copyright 2008 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Make sure that 'this' is bound to the global object when using
+// execScript.
+
+var result;
+execScript("result = this");
+assertTrue(result === this);