fix the android build. now both android_ninja _and_ android_make work.

platform_tools/android/gyp/skia_android.gypi

 {
   'targets': [
     {
       'target_name': 'CopySampleAppDeps',
       'type': 'none',
       'dependencies': [
         'skia_lib.gyp:skia_lib',
         'SampleApp.gyp:SampleApp',
       ],
       'variables': {
@@ skipping 13 matching lines @@
       },
       'copies': [
         # Copy all shared libraries into the Android app's libs folder.  Note
         # that this copy requires us to build SkiaAndroidApp after those
         # libraries, so that they exist by the time it occurs.  If there are no
         # libraries to copy, this will cause an error in Make, but the app will
         # still build.
         {
           'destination': '<(PRODUCT_DIR)/android/libs/<(android_arch)',
           'files': [
-            '<(PRODUCT_DIR)/<(SHARED_LIB_DIR)/libSampleApp.so',
-            '<(PRODUCT_DIR)/<(SHARED_LIB_DIR)/libskia_android.so',
+            '<(SHARED_LIB_DIR)/libSampleApp.so',
+            '<(SHARED_LIB_DIR)/libskia_android.so',
           ],
         },
       ],
     },
     {
       'target_name': 'skia_launcher',
       'type': 'executable',
       'sources': [
         '../launcher/skia_launcher.cpp',
       ],
@@ skipping 33 matching lines @@
             '-Dnative.libs.absolute.dir=<(PRODUCT_DIR)/android/libs',
             '-Dout.final.file=<(PRODUCT_DIR)/android/bin/SkiaAndroid.apk',
             '-Dsdk.dir=<(ANDROID_SDK_ROOT)',
             'debug',
           ],
         },
       ],
     },
   ],
 }