More changes to support hermetic Xcode toolchain in GN.

build/secondary/third_party/crashpad/crashpad/util/BUILD.gn

Index: build/secondary/third_party/crashpad/crashpad/util/BUILD.gn
diff --git a/build/secondary/third_party/crashpad/crashpad/util/BUILD.gn b/build/secondary/third_party/crashpad/crashpad/util/BUILD.gn
index c555fe57a3ad5fae6c47a3a91694236ae9bbd9f3..e2d0a8565cb967f26043c92f0e2a34f777daf295 100644
--- a/build/secondary/third_party/crashpad/crashpad/util/BUILD.gn
+++ b/build/secondary/third_party/crashpad/crashpad/util/BUILD.gn
@@ -2,6 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/toolchain/toolchain.gni")

[Nico, 2016/10/10 19:35:59]

Do you need to upstream changes in this dir after landing? I forget. I think
their README explains how this works.

[erikchen, 2016/10/10 22:54:57]

There are no readmes in any of the parent directories. My understanding is that
the crashpad team is responsible for upstreaming any relevant changes.

[Nico, 2016/10/11 00:46:51]

i have one at src/third_party/crashpad/README.chromium 

+
 if (is_mac) {
   import("//build/config/sysroot.gni")
 }
@@ -32,6 +34,9 @@ if (is_mac) {
 
     args = [ "{{source}}" ]
     args += rebase_path(outputs, root_build_dir)
+    if (!use_system_xcode) {
+      args += [ hermetic_xcode_path ]
+    }
   }
 }