Bug 1362119 - part 1 - Moving dom/base/Script{Loader,Element}.* in dom/script, r=ehsan

This patch does these things:

1. it moves nsScriptElement, nsScriptLoader, ScriptSettings, nsIScriptElement
   and nsIScriptLoaderObserver in dom/script
2. it renames nsScriptElement to mozilla::dom::ScriptElement
3. it renames nsScriptLaoder to mozilla::dom::ScriptLoader

parser/html/nsParserUtils.cpp

@@ -9,7 +9,6 @@
 #include "nsXPCOM.h"
 #include "nsISupportsPrimitives.h"
 #include "nsXPIDLString.h"
-#include "nsScriptLoader.h"
 #include "nsEscape.h"
 #include "nsIParser.h"
 #include "nsIDTD.h"
@@ -36,6 +35,7 @@
 #include "nsTreeSanitizer.h"
 #include "nsHtml5Module.h"
 #include "mozilla/dom/DocumentFragment.h"
+#include "mozilla/dom/ScriptLoader.h"
 #include "NullPrincipal.h"
 
 #define XHTML_DIV_TAG "div xmlns=\"http://www.w3.org/1999/xhtml\""
@@ -148,7 +148,7 @@ nsParserUtils::ParseFragment(const nsAString& aFragment,
   nsAutoScriptBlockerSuppressNodeRemoved autoBlocker;
 
   // stop scripts
-  RefPtr<nsScriptLoader> loader;
+  RefPtr<ScriptLoader> loader;
   bool scripts_enabled = false;
   if (document) {
     loader = document->ScriptLoader();