Fix fuzzer build on Mac for ICU

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index 3032b5079a5c8a3421ef7151de08300e5303f7ea..dec85130bcec50299e47be498ff551e6144d3346 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -8,6 +8,10 @@ if (is_android) {
   import("//build/config/android/rules.gni")
 }
 
+if (is_mac) {
+  import("build/config/sanitizers/sanitizers.gni")
+}
+
 # Meta target that includes both icuuc and icui18n. Most targets want both.
 # You can depend on the individually if you need to.
 group("icu") {
@@ -954,6 +958,10 @@ component("icuuc") {
     ":icudata",
   ]
 
+  if (is_mac && (is_asan || is_lsan || is_msan || is_tsan)) {

[jungshik at Google, 2016/08/16 20:24:43]

I guess this is not a right condition to check?  

+    deps += [ "//buildtools/third_party/libc++abi" ]
+  }
+
   configs -= [
     "//build/config/compiler:no_rtti",  # ICU uses RTTI.
     "//build/config/compiler:chromium_code",