Fix script and compiler invocation when using non-default toolchain.

build/config/mac/base_rules.gni

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # This file contains rules that are shared between Mac and iOS.
 
 import("//build/toolchain/toolchain.gni")
 
 if (is_mac) {
   import("//build/config/mac/mac_sdk.gni")
@@ skipping 31 matching lines @@
       invoker.source,
     ]
     outputs = [
       invoker.output,
     ]
     args = [
       "plutil",
       "-convert",
       invoker.format,
       "-o",
-      rebase_path(invoker.output, root_out_dir),
-      rebase_path(invoker.source, root_out_dir),
+      rebase_path(invoker.output, root_build_dir),
+      rebase_path(invoker.source, root_build_dir),
     ]
   }
 }
 
 # The base template used to generate Info.plist files for iOS and Mac apps and
 # frameworks.
 #
 # Arguments
 #
 #     plist_templates:
@@ skipping 199 matching lines @@
     public_deps = [
       ":$_shared_library_target",
     ]
   }
 
   _framework_public_config = _target_name + "_public_config"
   config(_framework_public_config) {
     # TODO(sdefresne): should we have a framework_dirs similar to lib_dirs
     # and include_dirs to avoid duplicate values on the command-line.
     visibility = [ ":$_framework_target" ]
-    ldflags = [ "-F" + rebase_path("$root_out_dir/.", root_out_dir) ]
+    ldflags = [ "-F" + rebase_path("$root_out_dir/.", root_build_dir) ]
     lib_dirs = [ root_out_dir ]
     libs = [ _framework_name ]
   }
 
   create_bundle(_framework_target) {
     forward_variables_from(invoker,
                            [
                              "data_deps",
                              "deps",
                              "public_deps",
@@ skipping 85 matching lines @@
       "$target_gen_dir/{{source_name_part}}.nib",
     ]
     args = [
              "--input",
              "{{source}}",
              "--output",
              rebase_path("$target_gen_dir/{{source_name_part}}.nib"),
            ] + ibtool_flags
   }
 }