Import .gyp files into the Chromium tree

build/external_code.gypi

+# Copyright (c) 2009 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.
+
+{
+  'conditions': [
+    [ 'OS=="win"', {
+      'target_defaults': {
+        'defines': [
+          '_CRT_SECURE_NO_DEPRECATE',
+          '_CRT_NONSTDC_NO_WARNINGS',
+          '_CRT_NONSTDC_NO_DEPRECATE',
+          '_SCL_SECURE_NO_DEPRECATE',
+        ],
+        'msvs_disabled_warnings': [4800],
+        'msvs_settings': {
+          'VCCLCompilerTool': {
+            'WarnAsError': 'false',
+            'Detect64BitPortabilityProblems': 'false',
+          },
+        },
+      },
+    }],
+    [ 'OS=="mac"', {
+      'target_defaults': {
+        'xcode_settings': {
+          'GCC_TREAT_WARNINGS_AS_ERRORS': 'NO',
+          'WARNING_CFLAGS!': ['-Wall'],
+        },
+      },
+    }],
+  ],
+}