Remove GYP files in breakpad, build, and tools.

tools/perf/clear_system_cache/clear_system_cache.gyp

Index: tools/perf/clear_system_cache/clear_system_cache.gyp
diff --git a/tools/perf/clear_system_cache/clear_system_cache.gyp b/tools/perf/clear_system_cache/clear_system_cache.gyp
deleted file mode 100644
index cf6299a03a9c4fb061d724da1c979db1c5aaa004..0000000000000000000000000000000000000000
--- a/tools/perf/clear_system_cache/clear_system_cache.gyp
+++ /dev/null
@@ -1,23 +0,0 @@
-# Copyright 2013 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': 'clear_system_cache',
-      'type': 'executable',
-      'toolsets': ['target'],
-      'dependencies': [
-        '../../../base/base.gyp:base',
-        '../../../base/base.gyp:test_support_base',
-      ],
-      'sources': [
-        'clear_system_cache_main.cc',
-      ],
-    },
-  ],
-}