Bug 1200450 - Add libffi, dtoa, openaes, and android/thirdparty to ThirdPartyPaths.txt. r=ehsan

tools/rewriting/ThirdPartyPaths.txt

@@ -17,7 +17,10 @@ gfx/ycbcr/
 intl/hyphenation/
 intl/icu/
 ipc/chromium/
+js/src/ctypes/libffi/
+js/src/dtoa.c
 js/src/jit/arm64/vixl/
+media/gmp-clearkey/0.1/openaes/
 media/kiss_ftt/
 media/libav/
 media/libcubeb/
@@ -44,6 +47,7 @@ memory/jemalloc/src/
 mfbt/decimal/
 mfbt/double-conversion/
 mfbt/lz4
+mobile/android/thirdparty/
 modules/brotli/
 modules/freetype2/
 modules/libbz2/