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

components/BUILD.gn

 # 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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//tools/grit/repack.gni")
 
 # Collection of all components. You wouldn't link to this, but this is rather
@@ skipping 40 matching lines @@
     "//components/history/core/common",
     "//components/history/core/test",
     "//components/infobars/core",
     "//components/invalidation",
     "//components/json_schema",
     "//components/keyed_service/content",
     "//components/language_usage_metrics",
     "//components/leveldb_proto",
     "//components/login",
     "//components/metrics",
+    "//components/mime_util",
     "//components/navigation_interception",
     "//components/navigation_metrics",
     "//components/network_time",
     "//components/omnibox",
     "//components/onc",
     "//components/os_crypt",
     "//components/packed_ct_ev_whitelist",
     "//components/pairing",
     "//components/password_manager/content/browser",
     "//components/password_manager/core/browser",
@@ skipping 192 matching lines @@
     "//components/data_reduction_proxy/core/common:unit_tests",
     "//components/device_event_log:unit_tests",
     "//components/devtools_http_handler:unit_tests",
     "//components/dom_distiller/core:unit_tests",
     "//components/domain_reliability:unit_tests",
     "//components/favicon_base:unit_tests",
     "//components/google/core/browser:unit_tests",
     "//components/invalidation:unittests",
     "//components/login:unit_tests",
     "//components/metrics:unit_tests",
+    "//components/mime_util:unit_tests",
     "//components/omnibox:unit_tests",
     "//components/ownership:unit_tests",
     "//components/packed_ct_ev_whitelist:unit_tests",
     "//components/undo:unit_tests",
     "//components/update_client:unit_tests",
     "//components/variations:unit_tests",
     "//components/web_resource:unit_tests",
     "//components/webcrypto:unit_tests",
     "//components/webdata/common:unit_tests",
 
     # These are the deps required by the code in this target.
     "//base",
     "//base/test:test_support",
     "//content/test:test_support",
+    "//net",
     "//ui/base",
   ]
   data_deps = [ ":components_tests_pak" ]
 
   if (!is_android && !is_ios) {
     deps += [ "//components/proximity_auth:unit_tests" ]
   }
 
   # TODO(GYP) need this target.
   #'breakpad/app/crash_keys_win_unittest.cc',
@@ skipping 119 matching lines @@
 
   deps = [
     "//base",
     "//base/test:test_support_perf",
     "//testing/gtest",
     "//testing/perf",
     "//content/test:test_support",
     "//components/visitedlink/browser",
   ]
 }