Add BlimpClientContext and factory with real and dummy implementation

blimp/client/core/android/dummy_blimp_jni_registrar.cc

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "blimp/client/public/android/blimp_jni_registrar.h"
+
+#include "base/android/jni_registrar.h"
+#include "blimp/client/core/android/dummy_blimp_client_context_android.h"
+
+namespace blimp {
+namespace client {
+namespace {
+
+base::android::RegistrationMethod kBlimpRegistrationMethods[] = {
+    {"DummyBlimpClientContextAndroid",
+     DummyBlimpClientContextAndroid::RegisterJni},
+};
+
+}  // namespace
+
+// This method is declared in
+// //blimp/client/public/android/blimp_jni_registrar.h, and either this function
+// or the one in //blimp/client/core/android/blimp_jni_registrar.cc
+// should be linked in to any binary blimp::client::RegisterBlimpJni.
+bool RegisterBlimpJni(JNIEnv* env) {
+  return base::android::RegisterNativeMethods(
+      env, kBlimpRegistrationMethods, arraysize(kBlimpRegistrationMethods));
+}
+
+}  // namespace client
+}  // namespace blimp