build CrOS chrome with gn

build/config/BUILDCONFIG.gn

Index: build/config/BUILDCONFIG.gn
diff --git a/build/config/BUILDCONFIG.gn b/build/config/BUILDCONFIG.gn
index 3eed120832f10c091058706af881c439adc0454c..27700bcd1bfbd567f7b3eb0d16226cedf8d98abb 100644
--- a/build/config/BUILDCONFIG.gn
+++ b/build/config/BUILDCONFIG.gn
@@ -184,9 +184,9 @@ if (target_os == "android") {
   assert(host_os == "linux",
          "ChromeOS builds are only supported on Linux hosts.")
   if (is_clang) {
-    _default_toolchain = "//build/toolchain/linux:clang_$target_cpu"
+    _default_toolchain = "//build/toolchain/cros:clang_$target_cpu"

[Peter Mayo, 2015/11/30 22:11:24]

I don't think this is the intent.

[Peter Mayo, 2015/12/01 00:51:21]

I see that without this the other code the other code is all dead, and so this
may be the new intent.

   } else {
-    _default_toolchain = "//build/toolchain/linux:$target_cpu"
+    _default_toolchain = "//build/toolchain/cros:$target_cpu"
   }
 } else if (target_os == "ios") {
   _default_toolchain = "//build/toolchain/mac:ios_clang_arm"