Make <page-size> ledger portrait-oriented

DEVSIX-1495

Autoported commit.
Original commit hash: [9adcd68]

Author: LodrKumquat

itext.tests/itext.html2pdf.tests/itext/html2pdf/attach/impl/layout/PageSizeParserTest.cs

@@ -56,7 +56,7 @@ public virtual void SimpleA4Test() {
 
         [NUnit.Framework.Test]
         public virtual void SimpleLedgerTest() {
-            PageSize expected = PageSize.LEDGER;
+            PageSize expected = PageSize.LEDGER.Rotate();
             PageSize actual = PageSizeParser.FetchPageSize("ledger", 10, 10, PageSize.A0);
             AssertSizesAreSame(expected, actual);
         }

itext.tests/itext.html2pdf.tests/resources/itext/html2pdf/css/w3c/css_page_3/page-size-009.pdf

@@ -66,10 +66,14 @@ static PageSizeParser() {
             pageSizeConstants.Put("jis-b4", new PageSize(729, 1032));
             pageSizeConstants.Put("letter", PageSize.LETTER);
             pageSizeConstants.Put("legal", PageSize.LEGAL);
-            pageSizeConstants.Put("ledger", PageSize.LEDGER);
+            /* according to CSS Paged Media Module Level 3 Editor’s Draft:
+            "ledger - Equivalent to the size of North American ledger: 11 inches wide by 17 inches high"
+            See https://www.w3.org/TR/css-page-3/
+            That makes this <page-size> portrait-oriented, i.e. rotated PageSize.LEDGER.
+            */
+            pageSizeConstants.Put("ledger", PageSize.LEDGER.Rotate());
         }
 
-        // TODO may be use here TABLOID? based on w3c tests, ledger in html is interpreted as portrait-oriented page
         /// <summary>Fetch the page size.</summary>
         /// <param name="pageSizeStr">the name of the page size ("a4", "letter",...)</param>
         /// <param name="em">the em value</param>

itext/itext.html2pdf/itext/html2pdf/attach/impl/layout/PageSizeParser.cs

@@ -1 +1 @@
-0d5591e0170c2a468fe1c96649051f9adb4f7c6d  
+9adcd68b4c42e6cad203f9e30546535afbf33d7f