Adds MediaClientAndroid to support embedder/MediaDrmBridge interaction.

media/base/android/media_client_android.cc

Index: media/base/android/media_client_android.cc
diff --git a/media/base/android/media_client_android.cc b/media/base/android/media_client_android.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ad4e11bd8350df08a853b5ed96de21d3e2a4b7bb
--- /dev/null
+++ b/media/base/android/media_client_android.cc
@@ -0,0 +1,37 @@
+// 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_client_android.h"
+
+#include "base/logging.h"
+#include "base/stl_util.h"
+
+namespace media {
+
+static MediaClientAndroid* g_media_client = nullptr;
+
+void SetMediaClientAndroid(MediaClientAndroid* media_client) {
+  DCHECK(!g_media_client);
+  g_media_client = media_client;
+}
+
+MediaClientAndroid* GetMediaClientAndroid() {
+  return g_media_client;
+}
+
+MediaClientAndroid::MediaClientAndroid() {
+}
+
+MediaClientAndroid::~MediaClientAndroid() {
+}
+
+void MediaClientAndroid::AddKeySystemUUIDMappings(KeySystemUuidMap* map) {
+}
+
+media::MediaDrmBridgeDelegate* MediaClientAndroid::GetMediaDrmBridgeDelegate(
+    const std::vector<uint8_t>& scheme_uuid) {
+  return nullptr;
+}
+
+}  // namespace media