Remove dependency of //component:components_unittests on //content on iOS.

components/test/run_all_unittests.cc

 // Copyright (c) 2012 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.
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/statistics_recorder.h"
 #include "base/path_service.h"
 #include "base/test/launcher/unit_test_launcher.h"
 #include "base/test/test_suite.h"
 #include "components/content_settings/core/common/content_settings_pattern.h"
-#include "content/public/test/test_content_client_initializer.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/ui_base_paths.h"
 #include "url/url_util.h"
 
 #if !defined(OS_IOS)
+#include "content/public/test/test_content_client_initializer.h"
 #include "ui/gl/test/gl_surface_test_support.h"
 #endif
 
 #if defined(OS_ANDROID)
 #include "base/android/jni_android.h"
 #include "components/invalidation/impl/android/component_jni_registrar.h"
 #include "components/policy/core/browser/android/component_jni_registrar.h"
 #include "components/safe_json/android/component_jni_registrar.h"
 #include "components/signin/core/browser/android/component_jni_registrar.h"
 #include "ui/base/android/ui_base_jni_registrar.h"
@@ skipping 60 matching lines @@
 
   void Shutdown() override {
     ui::ResourceBundle::CleanupSharedInstance();
 
     base::TestSuite::Shutdown();
   }
 
   DISALLOW_COPY_AND_ASSIGN(ComponentsTestSuite);
 };
 
+#if !defined(OS_IOS)
 class ComponentsUnitTestEventListener : public testing::EmptyTestEventListener {
  public:
   ComponentsUnitTestEventListener() {}
   ~ComponentsUnitTestEventListener() override {}
 
   void OnTestStart(const testing::TestInfo& test_info) override {
     content_initializer_.reset(new content::TestContentClientInitializer());

[blundell, 2015/09/04 09:18:40]

nit: maybe it's better to ifdef out only the references to
|content_initializer_| within this class?

[sdefresne, 2015/09/04 16:18:37]

Done.

   }
 
   void OnTestEnd(const testing::TestInfo& test_info) override {
     content_initializer_.reset();
   }
 
  private:
   scoped_ptr<content::TestContentClientInitializer> content_initializer_;
 
   DISALLOW_COPY_AND_ASSIGN(ComponentsUnitTestEventListener);
 };
+#endif  // !defined(OS_IOS)
 
 }  // namespace
 
 int main(int argc, char** argv) {
   ComponentsTestSuite test_suite(argc, argv);
 
+#if !defined(OS_IOS)
   // The listener will set up common test environment for all components unit
   // tests.
   testing::TestEventListeners& listeners =
       testing::UnitTest::GetInstance()->listeners();
   listeners.Append(new ComponentsUnitTestEventListener());
+#endif  // !defined(OS_IOS)
 
   return base::LaunchUnitTests(
       argc, argv, base::Bind(&base::TestSuite::Run,
                              base::Unretained(&test_suite)));
 }