Get rid of all component builds specific .isolate.

url/url.isolate

Index: url/url.isolate
diff --git a/url/url.isolate b/url/url.isolate
deleted file mode 100644
index ee27a0dc94947cfb49fa96fbad75ce0005d25d56..0000000000000000000000000000000000000000
--- a/url/url.isolate
+++ /dev/null
@@ -1,28 +0,0 @@
-# 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.
-{
-  'conditions': [
-    ['OS=="linux" and component=="shared_library"', {
-      'variables': {
-        'isolate_dependency_tracked': [
-          '<(PRODUCT_DIR)/lib/liburl_lib.so',
-        ],
-      },
-    }],
-    ['OS=="mac" and component=="shared_library"', {
-      'variables': {
-        'isolate_dependency_tracked': [
-          '<(PRODUCT_DIR)/liburl_lib.dylib',
-        ],
-      },
-    }],
-    ['OS=="win" and component=="shared_library"', {
-      'variables': {
-        'isolate_dependency_tracked': [
-          '<(PRODUCT_DIR)/url_lib.dll',
-        ],
-      },
-    }],
-  ],
-}