Separate encrypted media functions out of WebMediaPlayerClient interface

public/platform/WebMediaPlayerEncryptedMediaClient.h

+/*
+ * Copyright (C) 2009 Google Inc. All rights reserved.

[ddorwin, 2015/07/09 18:37:50]

2012

And any other changes from https://codereview.chromium.org/1055503002/.

[Srirama, 2015/07/10 15:17:44]

Done. No other changes were present.

+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef WebMediaPlayerEncryptedMediaClient_h
+#define WebMediaPlayerEncryptedMediaClient_h
+
+namespace blink {
+
+class WebMediaPlayerEncryptedMediaClient {
+public:
+    enum MediaKeyErrorCode {
+        MediaKeyErrorCodeUnknown = 1,
+        MediaKeyErrorCodeClient,
+        MediaKeyErrorCodeService,
+        MediaKeyErrorCodeOutput,
+        MediaKeyErrorCodeHardwareChange,
+        MediaKeyErrorCodeDomain
+    };
+
+    virtual void keyAdded(const WebString& keySystem, const WebString& sessionId) = 0;
+    virtual void keyError(const WebString& keySystem, const WebString& sessionId, MediaKeyErrorCode, unsigned short systemCode) = 0;
+    virtual void keyMessage(const WebString& keySystem, const WebString& sessionId, const unsigned char* message, unsigned messageLength, const WebURL& defaultURL) = 0;
+    virtual void encrypted(WebEncryptedMediaInitDataType, const unsigned char* initData, unsigned initDataLength) = 0;
+    virtual void didBlockPlaybackWaitingForKey() = 0;
+    virtual void didResumePlaybackBlockedForKey() = 0;
+
+protected:
+    ~WebMediaPlayerEncryptedMediaClient() { }
+};
+
+} // namespace blink
+
+#endif