Move the IsSupported* mime functions out of //net and into //components/mime_util

components/mime_util/mime_util.gyp

Index: components/mime_util/mime_util.gyp
diff --git a/testing/perf/perf_test.gyp b/components/mime_util/mime_util.gyp
similarity index 52%
copy from testing/perf/perf_test.gyp
copy to components/mime_util/mime_util.gyp
index 2065270c11079b690f43a3cf2c38ce5f81116af0..66b4228dfad40dc391a33e088bc998e7a2b7e6ee 100644
--- a/testing/perf/perf_test.gyp
+++ b/components/mime_util/mime_util.gyp
@@ -1,18 +1,21 @@
-# Copyright 2013 The Chromium Authors. All rights reserved.
+# Copyright 2015 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.
 
 {
   'targets': [
     {
-      'target_name': 'perf_test',
+      # GN version: //components/mime_util/mime_util
+      'target_name': 'mime_util',
       'type': 'static_library',
-      'sources': [
-        'perf_test.cc',
-      ],
       'dependencies': [
         '../../base/base.gyp:base',
+        '../../net/net.gyp:net',
+      ],
+      'sources': [
+        'mime_util.cc',
+        'mime_util.h',
       ],
-    },
+    }
   ],
 }