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

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

Index: blimp/client/core/context/android/blimp_client_context_impl_android.cc
diff --git a/blimp/client/core/context/android/blimp_client_context_impl_android.cc b/blimp/client/core/context/android/blimp_client_context_impl_android.cc
index 198f3872238aa6173f8ffdac7e01d360e763366f..842ea4a762f2a7ee671459b059f77a5f00ff9530 100644
--- a/blimp/client/core/context/android/blimp_client_context_impl_android.cc
+++ b/blimp/client/core/context/android/blimp_client_context_impl_android.cc
@@ -13,6 +13,7 @@
 #include "blimp/client/core/contents/blimp_contents_impl.h"
 #include "blimp/client/core/feedback/android/blimp_feedback_data_android.h"
 #include "blimp/client/core/settings/android/blimp_settings_android.h"
+#include "blimp/client/core/settings/android/settings_android.h"
 #include "blimp/client/public/blimp_client_context.h"
 #include "blimp/client/public/compositor/compositor_dependencies.h"
 #include "jni/BlimpClientContextImpl_jni.h"
@@ -124,5 +125,12 @@ void BlimpClientContextImplAndroid::InitSettingsPage(
   settings_android->SetDelegate(this);
 }
 
+base::android::ScopedJavaLocalRef<jobject>
+BlimpClientContextImplAndroid::GetSettings(
+    JNIEnv* env,
+    const base::android::JavaRef<jobject>& jobj) {
+  return static_cast<SettingsAndroid*>(settings())->GetJavaObject();
+}
+
 }  // namespace client
 }  // namespace blimp