Merge 176816

ppapi/api/dev/pp_video_dev.idl

Index: ppapi/api/dev/pp_video_dev.idl
===================================================================
--- ppapi/api/dev/pp_video_dev.idl	(revision 177492)
+++ ppapi/api/dev/pp_video_dev.idl	(working copy)
@@ -40,7 +40,8 @@
 [assert_size(12)]
 struct PP_VideoBitstreamBuffer_Dev {
   /**
-   * Client-specified identifier for the bitstream buffer.
+   * Client-specified identifier for the bitstream buffer. Valid values are
+   * non-negative.
    */
   int32_t id;
 
@@ -64,7 +65,7 @@
   /**
    * Client-specified id for the picture buffer. By using this value client can
    * keep track of the buffers it has assigned to the video decoder and how they
-   * are passed back to it.
+   * are passed back to it. Valid values are non-negative.
    */
   int32_t id;