Load non-locale .pak files directly from the .apk on Android (rather than extracting on start-up).

build/java_apk.gypi

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # This file is meant to be included into a target to provide a rule
 # to build Android APKs in a consistent manner.
 #
 # To use this, create a gyp target with the following form:
 # {
 #   'target_name': 'my_package_apk',
@@ skipping 71 matching lines @@
     'proguard_flags_paths': ['<(generated_proguard_file)'],
     'jar_name': 'chromium_apk_<(_target_name).jar',
     'resource_dir%':'<(DEPTH)/build/android/ant/empty/res',
     'R_package%':'',
     'include_all_resources%': 0,
     'additional_R_text_files': [],
     'dependencies_res_zip_paths': [],
     'additional_res_packages': [],
     'additional_bundled_libs%': [],
     'is_test_apk%': 0,
-    # Allow icu data and v8 snapshots to be loaded directly from the .apk.
-    'extensions_to_not_compress%': 'dat,bin',
+    # Allow icu data, v8 snapshots, and pak files to be loaded directly from the .apk.
+    # Note: These are actually suffix matches, not necessarily extensions.
+    'extensions_to_not_compress%': '.dat,.bin,.pak',
     'resource_input_paths': [],
     'intermediate_dir': '<(PRODUCT_DIR)/<(_target_name)',
     'asset_location%': '<(intermediate_dir)/assets',
     'codegen_stamp': '<(intermediate_dir)/codegen.stamp',
     'package_input_paths': [],
     'ordered_libraries_file': '<(intermediate_dir)/native_libraries.json',
     'additional_ordered_libraries_file': '<(intermediate_dir)/additional_native_libraries.json',
     'native_libraries_template': '<(DEPTH)/base/android/java/templates/NativeLibraries.template',
     'native_libraries_java_dir': '<(intermediate_dir)/native_libraries_java/',
     'native_libraries_java_file': '<(native_libraries_java_dir)/NativeLibraries.java',
@@ skipping 916 matching lines @@
             'native_libs_dir': '<(apk_package_native_libs_dir)',
           }, {
             'native_libs_dir': '<(DEPTH)/build/android/ant/empty/res',
           }],
         ],
       },
       'includes': ['android/apkbuilder_action.gypi'],
     },
   ],
 }