Add Settings[, Oberser] java code and JNI bridge.

blimp/client/core/context/android/blimp_client_context_impl_android.h

Index: blimp/client/core/context/android/blimp_client_context_impl_android.h
diff --git a/blimp/client/core/context/android/blimp_client_context_impl_android.h b/blimp/client/core/context/android/blimp_client_context_impl_android.h
index 6153f2f43727bcf3722f7411a1d949121c3b80eb..fb403657cc1bab563d61f41399493067f216a285 100644
--- a/blimp/client/core/context/android/blimp_client_context_impl_android.h
+++ b/blimp/client/core/context/android/blimp_client_context_impl_android.h
@@ -55,6 +55,11 @@ class BlimpClientContextImplAndroid : public BlimpClientContextImpl {
                         const base::android::JavaRef<jobject>& jobj,
                         const base::android::JavaRef<jobject>& blimp_settings);
 
+  // Returns the Settings java object.
+  base::android::ScopedJavaLocalRef<jobject> GetSettings(
+      JNIEnv* env,
+      const base::android::JavaRef<jobject>& jobj);
+
  protected:
   // BlimpClientContextImpl implementation.
   GURL GetAssignerURL() override;