Remove disable-embedded-shared-worker flag and shared worker process related codes.

content/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/features.gni")
 import("//build/config/ui.gni")
 
 content_tests_gypi_values = exec_script(
     "//build/gypi_to_gn.py",
     [ rebase_path("../content_tests.gypi"),
@@ skipping 29 matching lines @@
     sources = rebase_path(content_tests_gypi_values.layouttest_support_content_sources,
                           ".", "//content")
 
     deps += [
       "//content/child",
       "//content/common",
       "//content/gpu",
       "//content/ppapi_plugin",
       "//content/renderer",
       "//content/utility",
-      "//content/worker",
       "//cc",
       "//cc:test_support",
       "//media",
       "//ppapi:ppapi_host",
       "//ppapi:ppapi_proxy",
       "//ppapi:ppapi_shared",
       "//ppapi:ppapi_unittest_shared",
       "//third_party/WebKit/public:blink",
       "//ui/surface",
       "//v8",
@@ skipping 93 matching lines @@
 
     if (is_android) {
       #deps += [ "test_support_content_jni_headers" ]  TODO(GYP)
     }
   }
 
 }  # !is_ios
 
 # TODO(GYP): Unit test targets