Add CdmService to keep track of CDMs

content/common/media/cdm_service.cc

Index: content/common/media/cdm_service.cc
diff --git a/content/common/media/cdm_service.cc b/content/common/media/cdm_service.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c2907af937c170492c45cdef12d1bbffc76f2ddb
--- /dev/null
+++ b/content/common/media/cdm_service.cc
@@ -0,0 +1,56 @@
+// 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 "content/public/common/cdm_service.h"
+
+#include <stddef.h>
+
+#include "content/public/common/content_client.h"
+
+namespace content {
+
+static base::LazyInstance<CdmService>::Leaky g_cdm_service =
+    LAZY_INSTANCE_INITIALIZER;
+
+// static
+CdmService* CdmService::GetInstance() {
+  return g_cdm_service.Pointer();
+}
+
+CdmService::CdmService() {
+  GetContentClient()->AddContentDecryptionModules(&registered_modules_);
+}
+
+CdmService::~CdmService() {}
+
+void CdmService::Register(
+    const std::string& cdm_id,
+    const std::string& version,
+    const base::FilePath& module_library_path,
+    const std::vector<base::string16>& supported_codecs,
+    const std::vector<base::string16>& supported_init_data_types) {
+  DCHECK(!cdm_id.empty());
+  DCHECK(!version.empty());

[ddorwin, 2016/03/18 19:24:18]

Really? What about Android, etc.?

[jrummell, 2016/03/23 21:38:09]

Removed.

+  for (size_t i = 0; i < registered_modules_.size(); i++) {
+    if (registered_modules_[i].cdm_id == cdm_id &&

[ddorwin, 2016/03/18 19:24:18]

As mentioned later, why not just always insert?

[jrummell, 2016/03/23 21:38:09]

Done.

+        registered_modules_[i].version == version) {
+      registered_modules_[i].module_library_path = module_library_path;
+      registered_modules_[i].supported_codecs = supported_codecs;
+      registered_modules_[i].supported_init_data_types =
+          supported_init_data_types;
+      return;
+    }
+  }
+
+  registered_modules_.insert(
+      registered_modules_.begin(),
+      CdmInfo(cdm_id, version, module_library_path, supported_codecs,
+              supported_init_data_types));
+}
+
+const std::vector<CdmInfo>& CdmService::GetAllRegisteredCdms() const {
+  return registered_modules_;
+}
+
+}  // namespace media