Android: generates JNI bindings for constructors in system classes.

content/content.gyp

Index: content/content.gyp
diff --git a/content/content.gyp b/content/content.gyp
index 510faeb1ca7503f31d1563a2b99cc15c7e3dc1ad..40eebee345d7b6ea8f66057be96db02479e0ae86 100644
--- a/content/content.gyp
+++ b/content/content.gyp
@@ -298,8 +298,21 @@
           'includes': [ '../build/java.gypi' ],
         },
         {
+          'target_name': 'surface_texture_jni_headers',
+          'type': 'none',
+          'variables': {
+            'jni_gen_dir': 'content',
+            'input_java_class': 'android/graphics/SurfaceTexture.class',
+            'input_jar_file': '<(android_sdk)/android.jar',
+          },
+          'includes': [ '../build/jar_file_jni_generator.gypi' ],
+        },
+        {
           'target_name': 'content_jni_headers',
           'type': 'none',
+          'dependencies': [
+            'surface_texture_jni_headers',
+          ],
           'includes': [ 'content_jni.gypi' ],
         },
       ],