Adds MediaClientAndroid to support embedder/MediaDrmBridge interaction.

media/base/android/media_drm_bridge_delegate.cc

+// Copyright 2015 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 "media/base/android/media_drm_bridge_delegate.h"
+
+#include "base/logging.h"
+
+namespace media {
+
+MediaDrmBridgeDelegate::MediaDrmBridgeDelegate() {
+}
+
+MediaDrmBridgeDelegate::~MediaDrmBridgeDelegate() {
+}
+
+bool MediaDrmBridgeDelegate::OnCreateSession(
+    const EmeInitDataType init_data_type,
+    const std::vector<uint8_t>& init_data,
+    std::vector<uint8_t>* init_data_out,
+    std::vector<std::string>* optional_parameters_out) {
+  DCHECK(init_data_out->empty());
+  DCHECK(optional_parameters_out->empty());
+  return true;
+}
+
+}  // namespace media