Generate bench/Android.mk from gyp.

gyp/bench.gyp

 # GYP file to build performance testbench.
 #
 {
   'includes': [
     'apptype_console.gypi',
   ],
   'targets': [
     {
       'target_name': 'bench',
       'type': 'executable',
@@ skipping 15 matching lines @@
         ['skia_gpu == 1',
           {
             'include_dirs' : [
               '../src/gpu',
             ],
             'dependencies': [
               'gputest.gyp:skgputest',
             ],
           },
         ],
+        ['skia_android_framework == 1',
+          {
+            'libraries': [
+              '-lskia',
+              '-lcutils',
+            ],
+          },
+        ],
       ],
       'includes': [
         'bench.gypi',
         'gmslides.gypi',
       ],
     },
     {
       'target_name' : 'bench_timer',
       'type': 'static_library',
       'sources': [
@@ skipping 46 matching lines @@
         ['skia_gpu == 1', {
           'sources': [
             '../bench/BenchGpuTimer_gl.h',
             '../bench/BenchGpuTimer_gl.cpp',
           ],
         }],
       ],
     }
   ],
 }