Make unprefixed EME APIs use platform and Chromium.

public/platform/WebContentDecryptionModuleSession.h

Index: public/platform/WebContentDecryptionModuleSession.h
diff --git a/public/webview/WebInbandTextTrack.h b/public/platform/WebContentDecryptionModuleSession.h
similarity index 61%
copy from public/webview/WebInbandTextTrack.h
copy to public/platform/WebContentDecryptionModuleSession.h
index cebdf20b8552aee6e4cc4977ebcf6cb7ebbc1e02..6791de5eaac03437640e11f2cc4ce2c19166cda1 100644
--- a/public/webview/WebInbandTextTrack.h
+++ b/public/platform/WebContentDecryptionModuleSession.h
@@ -28,49 +28,41 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef WebInbandTextTrack_h
-#define WebInbandTextTrack_h
+#ifndef WebContentDecryptionModuleSession_h
+#define WebContentDecryptionModuleSession_h
 
 namespace WebKit {
 
 class WebString;
-class WebInbandTextTrackClient;
+class WebURL;
 
-class WebInbandTextTrack {
-public:
-    enum Kind {
-        KindSubtitles,
-        KindCaptions,
-        KindDescriptions,
-        KindChapters,
-        KindMetadata,
-        KindNone
-    };
-
-    enum Mode {
-        ModeDisabled,
-        ModeHidden,
-        ModeShowing
-    };
+// Abstract interface to the Chromium content decryption module session.
 
-    virtual ~WebInbandTextTrack() {}
-
-    virtual void setClient(WebInbandTextTrackClient*) = 0;
-    virtual WebInbandTextTrackClient* client() = 0;
+class WebContentDecryptionModuleSession {
+public:
+    class Client {
+    public:
+        enum MediaKeyErrorCode {
+            MediaKeyErrorCodeUnknown = 1,
+            MediaKeyErrorCodeClient,
+        };
 
-    virtual void setMode(Mode) = 0;
-    virtual Mode mode() const = 0;
+        virtual void keyAdded() = 0;
+        virtual void keyError(MediaKeyErrorCode, unsigned long systemCode) = 0;
+        virtual void keyMessage(const unsigned char* message, size_t messageLength, const WebKit::WebURL& destinationURL) = 0;
 
-    virtual Kind kind() const = 0;
-    virtual bool isClosedCaptions() const = 0;
+    protected:
+        virtual ~Client() { }
+    };
 
-    virtual WebString label() const = 0;
-    virtual WebString language() const = 0;
-    virtual bool isDefault() const = 0;
+    virtual ~WebContentDecryptionModuleSession() { }
 
-    virtual int textTrackIndex() const = 0;
+    virtual const WebString& sessionId() const = 0;
+    virtual void generateKeyRequest(const WebString& mimeType, const unsigned char* initData, size_t initDataLength) = 0;
+    virtual void update(const unsigned char* key, size_t keyLength) = 0;
+    virtual void close() = 0;
 };
 
 } // namespace WebKit
 
-#endif
+#endif // WebContentDecryptionModuleSession_h