Refactor lazy JNI registration support.

build/android/android_exports.gyp

Index: build/android/android_exports.gyp
diff --git a/build/linker_script_copy.gyp b/build/android/android_exports.gyp
similarity index 55%
rename from build/linker_script_copy.gyp
rename to build/android/android_exports.gyp
index 8962725f8e67cbcfd491a11c59a14d54f2f6d823..c259eee3756c495e7198e1a2c922d2a4b2f1a6dd 100644
--- a/build/linker_script_copy.gyp
+++ b/build/android/android_exports.gyp
@@ -5,7 +5,7 @@
 {
   'targets': [
     {
-      'target_name': 'linker_script_copy',
+      'target_name': 'android_exports',
       'type': 'none',
       'inputs': [
         '<(DEPTH)/build/android/android_exports.lst',
@@ -21,6 +21,19 @@
          ],
         },
       ],
+      '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',
+            ],
+          },
+        }],
+      ],
     },
   ],
 }