Remove unneeded JNI registrations.

build/jni_generator.gypi

Index: build/jni_generator.gypi
diff --git a/build/jni_generator.gypi b/build/jni_generator.gypi
index da99331ec522bfc27a3e544c40614bdd025c76ea..9feed28e7016c2e1dde81f4e52c5ff04bbc5b712 100644
--- a/build/jni_generator.gypi
+++ b/build/jni_generator.gypi
@@ -37,6 +37,9 @@
         'base/android/jni_generator/jni_generator_helper.h'
     ),
   },
+  'dependencies': [
+    '<(DEPTH)/build/linker_script_copy.gyp:linker_script_copy',
+  ],
   'rules': [
     {
       'rule_name': 'generate_jni_headers',
@@ -61,6 +64,7 @@
         '<(jni_generator_jarjar_file)',
         '--ptr_type',
         '<(jni_generator_ptr_type)',
+        '--native_exports',
       ],
       'message': 'Generating JNI bindings from <(RULE_INPUT_PATH)',
       'process_outputs_as_sources': 1,
@@ -81,4 +85,18 @@
   # This target exports a hard dependency because it generates header
   # files.
   'hard_dependency': 1,
+  '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',
+        ],
+      },
+    }],
+  ],
 }
+