Create Pepper-based CDM for EME WD (Blink changes)

Source/modules/encryptedmedia/MediaKeysClient.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 MediaKeysClient_h
+#define MediaKeysClient_h
+
+#include "wtf/PassOwnPtr.h"
+#include "wtf/text/WTFString.h"
+
+namespace blink {
+class WebContentDecryptionModule;
+}
+
+namespace WebCore {
+
+class ExecutionContext;
+class Page;
+
+class MediaKeysClient {
+public:
+    virtual PassOwnPtr<blink::WebContentDecryptionModule> createContentDecryptionModule(ExecutionContext*, const String& keySystem) = 0;
+
+protected:
+    virtual ~MediaKeysClient() { }
+};
+
+void provideMediaKeysTo(Page&, MediaKeysClient*);

[acolwell GONE FROM CHROMIUM, 2014/03/19 00:28:54]

I still think this is weird. Is there any reason not to just put this in a
static  MediaKeysController::provideTo(Page&) method and call that. It seems
like that would make things a lot clearer at the call site and this decl
wouldn't seem out of place.

[jrummell, 2014/03/20 19:17:32]

Done. Still have to provide the client since we need MediaKeysClientImpl, and
MediaKeysController in modules/ can't see it.

+
+} // namespace WebCore
+
+#endif // MediaKeysClient_h
+