Update MediaKeys interface for EME

content/renderer/media/webcontentdecryptionmoduleresult_helper.h

+// Copyright 2014 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.
+
+#ifndef CONTENT_RENDERER_MEDIA_WEBCONTENTDECRYPTIONMODULERESULT_HELPER_H_
+#define CONTENT_RENDERER_MEDIA_WEBCONTENTDECRYPTIONMODULERESULT_HELPER_H_
+
+#include <map>
+
+#include "base/basictypes.h"
+#include "media/base/cdm_promise.h"
+#include "third_party/WebKit/public/platform/WebContentDecryptionModuleResult.h"
+
+namespace content {
+
+// Used to convert a WebContentDecryptionModuleResult into a CdmPromise so that
+// it can be passed through Chromium. When CdmPromise::resolve(T) is called,
+// OnResolve(T) will be called and will call the appropriate complete...()
+// method on WebContentDecryptionModuleResult. If CdmPromise::reject() is called
+// instead, WebContentDecryptionModuleResult::completeWithError() is called.
+template <typename T>
+class WebCdmPromiseTemplate : public media::CdmPromiseTemplate<T> {

[ddorwin, 2014/09/24 17:37:47]

While thinking about how to name this file, I realized that this name is
probably not accurate. (Sorry. :( )
WebCdmResultWrapper? WebCdmResultWrapperPromise? WDYT?

[jrummell, 2014/09/24 22:32:32]

CdmResultPromise it is.

+ public:
+  WebCdmPromiseTemplate(blink::WebContentDecryptionModuleResult result);
+  WebCdmPromiseTemplate(blink::WebContentDecryptionModuleResult result,
+                        const std::string& uma_name);
+
+ protected:
+  virtual void OnResolve(const T& result);
+  void OnReject(media::MediaKeys::Exception exception_code,
+                uint32 system_code,
+                const std::string& error_message);
+
+  blink::WebContentDecryptionModuleResult webCDMResult_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebCdmPromiseTemplate);
+};
+
+// Specialization for no parameter to resolve().
+template <>
+class WebCdmPromiseTemplate<void> : public media::CdmPromiseTemplate<void> {
+ public:
+  WebCdmPromiseTemplate(blink::WebContentDecryptionModuleResult result);
+  WebCdmPromiseTemplate(blink::WebContentDecryptionModuleResult result,
+                        const std::string& uma_name);
+
+ protected:
+  virtual void OnResolve();
+  void OnReject(media::MediaKeys::Exception exception_code,
+                uint32 system_code,
+                const std::string& error_message);
+
+  blink::WebContentDecryptionModuleResult webCDMResult_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebCdmPromiseTemplate);
+};
+
+typedef WebCdmPromiseTemplate<void> WebSimpleCdmPromise;
+typedef WebCdmPromiseTemplate<media::KeyIdsVector> WebKeyIdsPromise;
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_MEDIA_WEBCONTENTDECRYPTIONMODULERESULT_HELPER_H_