Update the Starboard CHANGELOG.md

b/370779000

Change-Id: Ib01b288f6dcd110abc54e8a222259d53be3b2fa9

starboard/CHANGELOG.md

@@ -5,7 +5,51 @@ This file will be updated each time a new Starboard version is released.
 Each section in this file describes the changes made to the Starboard interface
 since the version previous to it.
 
-**NOTE: Starboard versions 13 and older are no longer supported.**
+**NOTE: Starboard versions 16 and older are no longer supported.**
+
+## Version 17
+Starboard 17 fully switches to POSIX APIs. The headers are
+no longer backwards compatible with older Starboard versions.
+However going forward we would continue maintaining backwards
+compatibility.
+
+### Removed `starboard/accessibility.h`
+The functionality is migrated to a starboard extension.
+
+### Removed `starboard/byte_swap.h`
+### Removed `starboard/condition_variable.h`
+### Removed `starboard/directory.h`
+### Removed `starboard/image.h`
+### Removed `starboard/mutex.h`
+### Removed `starboard/memory.h`
+### Removed `starboard/once.h`
+### Removed `starboard/string.h`
+### Removed `starboard/time.h`
+### Removed `starboard/ui_navigation.h`
+The functionality is migrated to starboard extension.
+### Removed `starboard/user.h`
+### Removed unused symbols from `starboard/file.h`
+### Removed unused symbols from `starboard/socket.h`
+### Removed unused symbols from `starboard/thread.h`
+### Removed unused symbols from `starboard/types.h`
+### Removed `DEPRECATED_SCOPED_PTR`
+### Removed `SB_HAS_IPV6` config
+All platforms support IPv6
+### Remove Win32/UWP support
+### Remove quirk for `INT16_AUDIO
+It was only used by win32 platforms
+### Removed unused configuration variables
+* `kSbDefaultMmapThreshold`
+* `kSbFileAltSepChar`
+* `kSbFileAltSepString`
+* `kSbHasMediaWebmVp9Support`
+* `kSbMallocAlignment`
+* `kSbMediaVideoFrameAlignment`
+* `kSbMemoryLogPath`
+* `kSbPreferredRgbaByteOrder`
+### Added POSIX support for `getpeername`, `getsockopt` and `recvmsg`.
+### Removed starboad/atomic.h support for C.
+The existing code was migrated to C11 atomics.
 
 ## Version 16
 A key update in Starboard version 16 is the adoption of POSIX APIs.