Bug 788293 - Remove e4x support. r=jorendorff,terrence,evilpie.

Ding dong!  The witch is dead!

js/src/frontend/BytecodeCompiler.cpp

@@ -158,13 +158,6 @@ frontend::CompileScript(JSContext *cx, HandleObject scopeChain, AbstractFramePtr
         }
     }
 
-    ParseNode *pn;
-#if JS_HAS_XML_SUPPORT
-    pn = NULL;
-    bool onlyXML;
-    onlyXML = true;
-#endif
-
     TokenStream &tokenStream = parser.tokenStream;
     bool canHaveDirectives = true;
     for (;;) {
@@ -176,7 +169,7 @@ frontend::CompileScript(JSContext *cx, HandleObject scopeChain, AbstractFramePtr
             return UnrootedScript(NULL);
         }
 
-        pn = parser.statement();
+        ParseNode *pn = parser.statement();
         if (!pn)
             return UnrootedScript(NULL);
 
@@ -193,29 +186,12 @@ frontend::CompileScript(JSContext *cx, HandleObject scopeChain, AbstractFramePtr
         if (!EmitTree(cx, &bce, pn))
             return UnrootedScript(NULL);
 
-#if JS_HAS_XML_SUPPORT
-        if (!pn->isKind(PNK_SEMI) || !pn->pn_kid || !pn->pn_kid->isXMLItem())
-            onlyXML = false;
-#endif
         parser.freeTree(pn);
     }
 
     if (!SetSourceMap(cx, tokenStream, ss, script))
         return UnrootedScript(NULL);
 
-#if JS_HAS_XML_SUPPORT
-    /*
-     * Prevent XML data theft via <script src="http://victim.com/foo.xml">.
-     * For background, see:
-     *
-     * https://bugzilla.mozilla.org/show_bug.cgi?id=336551
-     */
-    if (pn && onlyXML && !callerFrame) {
-        parser.reportError(NULL, JSMSG_XML_WHOLE_PROGRAM);
-        return UnrootedScript(NULL);
-    }
-#endif
-
     // It's an error to use |arguments| in a function that has a rest parameter.
     if (callerFrame && callerFrame.isFunctionFrame() && callerFrame.fun()->hasRest()) {
         HandlePropertyName arguments = cx->names().arguments;