Reland: [chromecast] Make testnames consistent.

testing/buildbot/gn_isolate_map.pyl

 ## 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.
 
 # gn_isolate_map.pyl - A mapping of Ninja build target names to GN labels and
 # test type classifications for the tests that are run on the bots.
 #
 # This mapping is used by MB so that we can uniformly refer to test binaries
 # by their Ninja target names in the recipes and not need to worry about how
 # they are referred to in GN or GYP specifically (the GYP target name is pretty
@@ skipping 207 matching lines @@
     "type": "console_test_launcher",
   },
   "cast_shell": {
     "label": "//chromecast:cast_shell",
     "type": "additional_compile_target",
   },
   "cast_shell_apk": {
     "label": "//chromecast:cast_shell_apk",
     "type": "additional_compile_target",
   },
-  "cast_shell_unittests": {
-    "label": "//chromecast/app:cast_shell_unittests",
+  "cast_shell_browsertests": {
+    "label": "//chromecast:cast_shell_browsertests",
     "type": "console_test_launcher",
   },
-  "cast_shell_browser_test": {
-    "label": "//chromecast/browser:cast_shell_browser_test",
+  "cast_shell_unittests": {
+    "label": "//chromecast:cast_shell_unittests",
     "type": "console_test_launcher",
   },
   "cast_unittests": {
     "label": "//media/cast:cast_unittests",
     "type": "windowed_test_launcher",
   },
   "cc_unittests": {
     "label": "//cc:cc_unittests",
     "type": "windowed_test_launcher",
   },
@@ skipping 705 matching lines @@
   },
   "wm_unittests": {
     "label": "//ui/wm:wm_unittests",
     "type": "windowed_test_launcher",
   },
   "wtf_unittests": {
     "label": "//third_party/WebKit/Source/wtf:wtf_unittests",
     "type": "console_test_launcher",
   },
 }