Added a test that currently is able to print to pdf.

pdf/pdfium/pdfium_engine.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "pdf/pdfium/pdfium_engine.h"
 
 #include <math.h>
 
 #include "base/json/json_writer.h"
 #include "base/logging.h"
@@ skipping 3366 matching lines @@
       FPDF_GetPageSizeByIndex(doc, page_number, &page_width, &page_height);
       if (page_width > *max_page_width) {
         *max_page_width = page_width;
       }
     }
   }
   FPDF_CloseDocument(doc);
   return true;
 }
 
+bool PDFiumEngineExports::GetPDFPageSizeByIndex(
+    const void* pdf_buffer,
+    int buffer_size,
+    int index,
+    double* width,
+    double* height) {
+  FPDF_DOCUMENT doc = FPDF_LoadMemDocument(pdf_buffer, buffer_size, NULL);
+  bool ret_value = false;
+
+  if (!doc)
+    return ret_value;
+
+  if (FPDF_GetPageSizeByIndex(doc, index, width, height))
+    ret_value = true;
+
+  FPDF_CloseDocument(doc);
+
+  return ret_value;
+}
+
 }  // namespace chrome_pdf