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/nsHtml5TreeOpExecutor.cpp

@@ -7,10 +7,10 @@
 #include "mozilla/DebugOnly.h"
 #include "mozilla/Likely.h"
 #include "mozilla/dom/nsCSPService.h"
+#include "mozilla/dom/ScriptLoader.h"
 
 #include "nsError.h"
 #include "nsHtml5TreeOpExecutor.h"
-#include "nsScriptLoader.h"
 #include "nsIContentViewer.h"
 #include "nsIContentSecurityPolicy.h"
 #include "nsIDocShellTreeItem.h"
@@ -953,8 +953,8 @@ nsHtml5TreeOpExecutor::PreloadScript(const nsAString& aURL,
     return;
   }
   mDocument->ScriptLoader()->PreloadURI(uri, aCharset, aType, aCrossOrigin,
-                                        aIntegrity, aScriptFromHead,
-                                        mSpeculationReferrerPolicy);
+                                           aIntegrity, aScriptFromHead,
+                                           mSpeculationReferrerPolicy);
 }
 
 void