Update makefiles after merge of Chromium at 245428

This commit was generated by merge_from_chromium.py.

Change-Id: Ia631f910951bebdb910be687890680dc43412d93
diff --git a/ft2.target.darwin-x86.mk b/ft2.target.darwin-x86.mk
index 01244e5..073c551 100644
--- a/ft2.target.darwin-x86.mk
+++ b/ft2.target.darwin-x86.mk
@@ -80,7 +80,8 @@
 	-g \
 	-fomit-frame-pointer \
 	-fdata-sections \
-	-ffunction-sections
+	-ffunction-sections \
+	-funwind-tables
 
 MY_DEFS_Debug := \
 	'-DV8_DEPRECATION_WARNINGS' \
@@ -173,8 +174,7 @@
 	-fdata-sections \
 	-ffunction-sections \
 	-fomit-frame-pointer \
-	-fno-unwind-tables \
-	-fno-asynchronous-unwind-tables
+	-funwind-tables
 
 MY_DEFS_Release := \
 	'-DV8_DEPRECATION_WARNINGS' \