Make tab_capture_end2end_tests work as a regular windowed_test_launcher.

chrome/test/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/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 1117 matching lines @@
       "//tools/perf/chrome_telemetry_build/",
 
       # From telemetry_gpu_unittests.isolate
       "//third_party/pylint/",
       "//third_party/logilab/",
       "//testing/scripts/common.py",
       "//testing/xvfb.py",
       "//testing/scripts/run_telemetry_as_googletest.py",
     ]
   }
-
-  # TODO(dpranke), TODO(crbug.com/714336): tab_capture_end2end_tests
-  # is really just browser_tests with some different flags. Figure out
-  # what the right way to run this is given the different ways to
-  # configure things in the //testing/buildbot/*.json files, here,
-  # gn_isolate_map.pyl, and mb.py. There's too many knobs and the interaction
-  # is strange and unclear at this point. For now, I *think* this will just
-  # have the effect of disabling the test in analyze. :(.
-  group("tab_capture_end2end_tests") {
-    testonly = true
-    deps = [
-      # ":browser_tests",
-    ]
-  }
 }
 
 static_library("browser_tests_runner") {
   testonly = true
   sources = []
 
   deps = [
     ":test_support",
   ]
 
@@ skipping 4081 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }