SkPDF/Bench: add bench for SkPDFCreateBitmapObject

gyp/bench.gyp

 # Copyright 2015 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 # GYP file to build performance testbench.
 #
 {
   'includes': [
     'apptype_console.gypi',
   ],
@@ skipping 23 matching lines @@
             'skia_static.a',
             '-lhwui',
           ],
           'include_dirs': [
             '../../../frameworks/base/libs/hwui/',
           ],
           'dependencies': [
             'tools.gyp:android_utils',
           ],
         }],
+        [ 'skia_pdf',
+          { 'dependencies': [ 'pdf.gyp:pdf' ],
+            'include_dirs': [ '../src/pdf' ], },
+          { 'dependencies': [ 'pdf.gyp:nopdf' ], }
+        ],
       ],
     },
   ],
 }