Isolated more web usages - Membership and Request stuff

- Moved a few more files

src/Umbraco.Core/Routing/ContentFinderByPageIdQuery.cs

@@ -0,0 +1,37 @@
+using Umbraco.Core.Request;
+
+namespace Umbraco.Web.Routing
+{
+    /// <summary>
+    /// This looks up a document by checking for the umbPageId of a request/query string
+    /// </summary>
+    /// <remarks>
+    /// This is used by library.RenderTemplate and also some of the macro rendering functionality like in
+    /// macroResultWrapper.aspx
+    /// </remarks>
+    public class ContentFinderByPageIdQuery : IContentFinder
+    {
+        private readonly IRequestAccessor _requestAccessor;
+
+        public ContentFinderByPageIdQuery(IRequestAccessor requestAccessor)
+        {
+            _requestAccessor = requestAccessor;
+        }
+
+        public bool TryFindContent(IPublishedRequest frequest)
+        {
+            int pageId;
+            if (int.TryParse(_requestAccessor.GetRequestValue("umbPageID"), out pageId))
+            {
+                var doc = frequest.UmbracoContext.Content.GetById(pageId);
+
+                if (doc != null)
+                {
+                    frequest.PublishedContent = doc;
+                    return true;
+                }
+            }
+            return false;
+        }
+    }
+}