Convert some GN test support targets to static libs.

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/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("//build_overrides/v8.gni")
@@ skipping 32 matching lines @@
     "//content/public/app:both",
     "//content/public/browser",
     "//content/public/common",
     "//third_party/WebKit/public:blink",
     "//third_party/WebKit/public:test_support",
   ]
   deps = [
     ":browsertest_base",
     ":content_test_mojo_bindings",
     "//base/third_party/dynamic_annotations",
-    "//cc",
     "//cc:test_support",
     "//cc/blink",
     "//cc/ipc",
     "//cc/surfaces",
     "//components/display_compositor",
     "//components/scheduler:scheduler",
     "//components/scheduler:test_support",
     "//content/app:both_for_content_tests",
     "//content/browser:for_content_tests",
     "//content/browser/speech/proto",
@@ skipping 136 matching lines @@
     deps += [ "//gin:gin" ]
   }
 
   if (is_mac) {
     deps += [ "//ui/accelerated_widget_mac" ]
   }
 }
 
 # browsertest_support can be used by targets that run content_shell based
 # browser tests.
-source_set("browsertest_support") {
+static_library("browsertest_support") {
   testonly = true
 
   # See comment at the top of //content/BUILD.gn for why this is disabled in
   # component builds.
   if (is_component_build) {
     check_includes = false
   }
 
   sources = [
     "../public/test/content_browser_test.cc",
@@ skipping 30 matching lines @@
   if (is_android) {
     deps += [ "//content/public/app:both" ]
   } else {
     deps += [ "//content/public/browser" ]
   }
 
   configs += [ "//v8:external_startup_data" ]
 }
 
 # browsertest_base can be used by any browser test target.
-source_set("browsertest_base") {
+static_library("browsertest_base") {
   testonly = true
 
   sources = [
     "../public/test/browser_test.h",
     "../public/test/browser_test_base.cc",
     "../public/test/browser_test_base.h",
     "../public/test/browser_test_utils.cc",
     "../public/test/browser_test_utils.h",
   ]
 
@@ skipping 651 matching lines @@
 fuzzer_test("renderer_fuzzer") {
   sources = [
     "renderer_fuzzer.cc",
   ]
   deps = [
     ":test_support",
     "//content/shell:content_shell_lib",
   ]
   dict = "data/fuzzer_dictionaries/renderer_fuzzer.dict"
 }