Add a scroll offset to PDF documents to account for the top material design toolbar.

pdf/out_of_process_instance.h

 // 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.
 
 #ifndef PDF_OUT_OF_PROCESS_INSTANCE_H_
 #define PDF_OUT_OF_PROCESS_INSTANCE_H_
 
 #include <queue>
 #include <set>
 #include <string>
@@ skipping 315 matching lines @@
   bool did_call_start_loading_;
 
   // If this is true, then don't scroll the plugin in response to DidChangeView
   // messages. This will be true when the extension page is in the process of
   // zooming the plugin so that flickering doesn't occur while zooming.
   bool stop_scrolling_;
 
   // The background color of the PDF viewer.
   uint32 background_color_;
 
+  // The blank space above the first page of the document reserved for the
+  // toolbar.
+  int top_toolbar_height_;
+
   DISALLOW_COPY_AND_ASSIGN(OutOfProcessInstance);
 };
 
 }  // namespace chrome_pdf
 
 #endif  // PDF_OUT_OF_PROCESS_INSTANCE_H_