Adds MediaClientAndroid to support embedder/MediaDrmBridge interaction.

android_webview/browser/aw_media_client_android.cc

Index: android_webview/browser/aw_media_client_android.cc
diff --git a/android_webview/browser/aw_media_client_android.cc b/android_webview/browser/aw_media_client_android.cc
new file mode 100644
index 0000000000000000000000000000000000000000..4937ccde5d8efd648737d956923195c11391e2fb
--- /dev/null
+++ b/android_webview/browser/aw_media_client_android.cc
@@ -0,0 +1,60 @@
+// 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 "android_webview/browser/aw_media_client_android.h"
+
+#include <utility>
+
+#include "base/stl_util.h"
+#include "base/strings/string_number_conversions.h"
+#include "base/strings/string_util.h"
+#include "components/cdm/browser/widevine_drm_delegate_android.h"
+
+namespace android_webview {
+
+namespace {
+
+const size_t kGUIDLength = 36U;
+
+std::pair<std::string, media::UUID> CreateMappingFromString(
+    const std::string& key_system_uuid_mapping) {
+  std::vector<std::string> tokens;
+  Tokenize(key_system_uuid_mapping, ",", &tokens);
+
+  std::string key_system;
+  base::TrimWhitespaceASCII(tokens[0], base::TRIM_ALL, &key_system);
+
+  std::vector<uint8_t> uuid;
+  std::string guid(tokens[1]);
+  DCHECK(guid.length() == kGUIDLength);
+  base::RemoveChars(guid, "-", &guid);
+  base::HexStringToBytes(guid, &uuid);
+
+  return std::make_pair(key_system, uuid);
+}
+
+}  // namespace
+
+AwMediaClientAndroid::AwMediaClientAndroid(
+    const std::vector<std::string>& key_system_uuid_mappings)
+    : widevine_delegate_(new cdm::WidevineDrmDelegateAndroid) {
+  for (const std::string& key_system_uuid_mapping : key_system_uuid_mappings) {
+    std::pair<std::string, media::UUID> mapping =
+        CreateMappingFromString(key_system_uuid_mapping);
+    AddKeySystemUUIDMapping(mapping.first, mapping.second);
+  }
+}
+
+AwMediaClientAndroid::~AwMediaClientAndroid() {
+}
+
+media::MediaDrmBridgeDelegate*
+AwMediaClientAndroid::GetMediaDrmBridgeDelegate(
+    const media::UUID& scheme_uuid) const {
+  if (scheme_uuid == widevine_delegate_->GetUUID())
+    return widevine_delegate_.get();
+  return nullptr;
+}
+
+}  // namespace android_webview