Remove GYP files in breakpad, build, and tools.

tools/json_schema_compiler/api_gen_util.gyp

Index: tools/json_schema_compiler/api_gen_util.gyp
diff --git a/tools/json_schema_compiler/api_gen_util.gyp b/tools/json_schema_compiler/api_gen_util.gyp
deleted file mode 100644
index 54966cc6030aad7469b14b5b4fa4cf02dbeeaaef..0000000000000000000000000000000000000000
--- a/tools/json_schema_compiler/api_gen_util.gyp
+++ /dev/null
@@ -1,20 +0,0 @@
-# Copyright (c) 2012 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.
-
-{
-  'variables': {
-    'chromium_code': 1,
-  },
-  'targets': [{
-    'target_name': 'api_gen_util',
-    'type': 'static_library',
-    'sources': [
-        'util.cc',
-    ],
-    'dependencies': ['<(DEPTH)/base/base.gyp:base'],
-    'include_dirs': [
-      '<(DEPTH)',
-    ],
-  }],
-}