[Android] Create native lib placeholder files

build/java_apk.gypi

Index: build/java_apk.gypi
diff --git a/build/java_apk.gypi b/build/java_apk.gypi
index f32385323dfd94f30743eb93feee0e393ce40df2..27754533db4429947d62d62dad4b732f360b9754 100644
--- a/build/java_apk.gypi
+++ b/build/java_apk.gypi
@@ -173,6 +173,8 @@
     'unsigned_standalone_apk_path': '<(unsigned_standalone_apk_path)',
     'libchromium_android_linker': 'libchromium_android_linker.>(android_product_extension)',
     'extra_native_libs': [],
+    'native_lib_placeholder_stamp': '<(apk_package_native_libs_dir)/<(android_app_abi)/native_lib_placeholder.stamp',
+    'native_lib_placeholders': [],
   },
   # Pass the jar path to the apk's "fake" jar target.  This would be better as
   # direct_dependent_settings, but a variable set by a direct_dependent_settings
@@ -384,6 +386,21 @@
           },
           'includes': ['../build/android/strip_native_libraries.gypi'],
         },
+        {
+          'action_name': 'Create native lib placeholder files for previous releases',
+          'inputs': [
+            '<(DEPTH)/build/android/gyp/create_placeholder_files.py',
+          ],
+          'outputs': [
+            '<(native_lib_placeholder_stamp)',
+          ],
+          'action': [
+            'python', '<(DEPTH)/build/android/gyp/create_placeholder_files.py',
+            '--dest-lib-dir=<(apk_package_native_libs_dir)/<(android_app_abi)/',
+            '--stamp=<(native_lib_placeholder_stamp)',
+            '<@(native_lib_placeholders)',
+          ],
+        },
       ],
       'conditions': [
         ['gyp_managed_install == 1', {