Display content of the annotation when mouse hover.

pdfium.gyp

 # Copyright 2015 PDFium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'chromium_code': 1,
     'pdf_use_skia%': 0,
     'pdf_enable_v8%': 1,
     'pdf_enable_xfa%': 0, # Set to 1 by standalone.gypi in a standalone build.
@@ skipping 73 matching lines @@
         'pdfwindow',
       ],
       'sources': [
         'fpdfsdk/cfx_systemhandler.cpp',
         'fpdfsdk/cfx_systemhandler.h',
         'fpdfsdk/include/cba_annotiterator.h',
         'fpdfsdk/include/cpdfsdk_annot.h',
         'fpdfsdk/include/cpdfsdk_annothandlermgr.h',
         'fpdfsdk/include/cpdfsdk_annotiterator.h',
         'fpdfsdk/include/cpdfsdk_baannot.h',
+        'fpdfsdk/include/cpdfsdk_baannothandler.h',
         'fpdfsdk/include/cpdfsdk_bfannothandler.h',
         'fpdfsdk/include/cpdfsdk_datetime.h',
         'fpdfsdk/include/cpdfsdk_interform.h',
         'fpdfsdk/include/cpdfsdk_widget.h',
         'fpdfsdk/include/fsdk_actionhandler.h',
         'fpdfsdk/include/fsdk_pauseadapter.h',
         'fpdfsdk/include/ipdfsdk_annothandler.h',
         'fpdfsdk/include/pdfsdk_fieldaction.h',
         'fpdfsdk/cba_annotiterator.cpp',
         'fpdfsdk/cpdfsdk_annot.cpp',
         'fpdfsdk/cpdfsdk_annothandlermgr.cpp',
         'fpdfsdk/cpdfsdk_annotiterator.cpp',
         'fpdfsdk/cpdfsdk_baannot.cpp',
+        'fpdfsdk/cpdfsdk_baannothandler.cpp',
         'fpdfsdk/cpdfsdk_bfannothandler.cpp',
         'fpdfsdk/cpdfsdk_datetime.cpp',
         'fpdfsdk/cpdfsdk_interform.cpp',
         'fpdfsdk/cpdfsdk_widget.cpp',
         'fpdfsdk/fpdfdoc.cpp',
         'fpdfsdk/fpdfeditimg.cpp',
         'fpdfsdk/fpdfeditpage.cpp',
         'fpdfsdk/fpdfformfill.cpp',
         'fpdfsdk/fpdfppo.cpp',
         'fpdfsdk/fpdfsave.cpp',
@@ skipping 1047 matching lines @@
             'fpdfsdk/fpdfxfa/include/fpdfxfa_app.h',
             'fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h',
             'fpdfsdk/fpdfxfa/include/fpdfxfa_page.h',
             'fpdfsdk/fpdfxfa/include/fpdfxfa_util.h',
           ],
         },
       ]
     }],
   ]
 }