[telemetry] bitmaptools as a standalone executable

tools/telemetry/telemetry.gyp

 # Copyright 2014 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.
 
 {
-  'includes': [
-    'libwebm.gypi',
-  ],
   'targets': [
     {
-      'target_name': 'libwebm',
-      'type': 'static_library',
+      'target_name': 'bitmaptools',
+      'type': 'executable',
       'sources': [
-        '<@(libwebm_sources)'
-      ]
-    },  # target libwebm
-  ]
+        'telemetry/core/bitmaptools.cc',
+      ],
+      'toolsets': ['host'],
+    },
+  ],
 }