Adds MediaClientAndroid to support embedder/MediaDrmBridge interaction.

chrome/browser/android/chrome_media_client_android.cc

Index: chrome/browser/android/chrome_media_client_android.cc
diff --git a/chrome/browser/android/chrome_media_client_android.cc b/chrome/browser/android/chrome_media_client_android.cc
new file mode 100644
index 0000000000000000000000000000000000000000..1f8a542673db9591240e17a3290c6042992a827b
--- /dev/null
+++ b/chrome/browser/android/chrome_media_client_android.cc
@@ -0,0 +1,19 @@
+// 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 "chrome/browser/android/chrome_media_client_android.h"
+
+ChromeMediaClientAndroid::ChromeMediaClientAndroid() {
+}
+
+ChromeMediaClientAndroid::~ChromeMediaClientAndroid() {
+}
+
+media::MediaDrmBridgeDelegate*
+ChromeMediaClientAndroid::GetMediaDrmBridgeDelegate(
+    const std::vector<uint8_t>& scheme_uuid) {
+  if (scheme_uuid == widevine_delegate_.GetUUID())
+    return &widevine_delegate_;
+  return nullptr;
+}