Update PPP side of Pepper CDM API to support video decoding.

ppapi/api/private/pp_content_decryptor.idl

 /* Copyright (c) 2012 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.
  */
 
 /**
  * The <code>PP_DecryptTrackingInfo</code> struct contains necessary information
  * that can be used to associate the decrypted block with a decrypt request
  * and/or an input block.
  */
@@ skipping 96 matching lines @@
   uint32_t iv_size;
 
   /**
    * Subsample information of the block to be decrypted.
    */
   PP_DecryptSubsampleDescription[16] subsamples;
   uint32_t num_subsamples;
 };
 
 /**
+ * <code>PP_DecryptedFrameFormat</code> contains video frame formats.
+ */
+[assert_size(4)]
+enum PP_DecryptedFrameFormat {
+  PP_DECRYPTEDFRAMEFORMAT_UNKNOWN = 0,
+  PP_DECRYPTEDFRAMEFORMAT_EMPTY = 1,
+  PP_DECRYPTEDFRAMEFORMAT_YV12 = 2,
+  PP_DECRYPTEDFRAMEFORMAT_I420 = 3
+};
+
+/**
+ * <code>PP_VideoCodec</code> contains video codec type constants.
+ */
+[assert_size(4)]
+enum PP_VideoCodec {
+  PP_VIDEOCODEC_UNKNOWN = 0,
+  PP_VIDEOCODEC_VP8 = 1
+};
+
+/**
+ * <code>PP_EncryptedVideoFrameInfo</code> contains the information required
+ * to decrypt and decode a video frame.
+ */
+[assert_size(256)]
+struct PP_EncryptedVideoFrameInfo {
+  /**
+   * The decoded video frame format.
+   */
+  PP_DecryptedFrameFormat format;
+
+  /**
+   * The video frame codec type.
+   */
+  PP_VideoCodec codec;
+
+  /**
+   * Video frame width in pixels.
+   */
+  int32_t width;
+
+  /**
+   * Video frame height in pixels.
+   */
+  int32_t height;
+
+  /** 
+   * Information required to decrypt the frame.
+   */
+  PP_EncryptedBlockInfo encryption_info;
+};
+
+/**
  * The <code>PP_DecryptResult</code> enum contains decryption and decoding
  * result constants.
  */
 [assert_size(4)]
 enum PP_DecryptResult {
   /** The decryption (and/or decoding) operation finished successfully. */
   PP_DECRYPTRESULT_SUCCESS = 0,
   /** The decryptor did not have the necessary decryption key. */
   PP_DECRYPTRESULT_DECRYPT_NOKEY = 1,
   /** An unexpected error happened during decryption. */
@@ skipping 17 matching lines @@
    * Result of the decryption (and/or decoding) operation.
    */
   PP_DecryptResult result;
 
   /**
    * 4-byte padding to make the size of <code>PP_DecryptedBlockInfo</code>
    * a multiple of 8 bytes. The value of this field should not be used.
    */
   uint32_t padding;
 };