Refactor lazy JNI registration support.

build/android/android_exports.gyp

 # Copyright 2014 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.
 
 {
   'targets': [
     {
-      'target_name': 'linker_script_copy',
+      'target_name': 'android_exports',
       'type': 'none',
       'inputs': [
         '<(DEPTH)/build/android/android_exports.lst',
       ],
       'outputs': [
         '<(android_linker_script)',
       ],
       'copies': [
         {
           'destination': '<(SHARED_INTERMEDIATE_DIR)',
           'files': [
             '<@(_inputs)',
          ],
         },
       ],
+      'conditions': [
+        ['component=="static_library"', {
+          'link_settings': {
+            'ldflags': [
+              # Only export symbols that are specified in version script.
+              '-Wl,--version-script=<(android_linker_script)',
+            ],
+            'ldflags!': [
+              '-Wl,--exclude-libs=ALL',
+            ],
+          },
+        }],
+      ],
     },
   ],
 }