Only Register() platform specific content settings types on different platforms

components/content_settings/core/browser/content_settings_registry_unittest.cc

 // 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.
 
 #include <string>
 #include <vector>
 
 #include "base/logging.h"
 #include "base/values.h"
 #include "components/content_settings/core/browser/content_settings_info.h"
@@ skipping 54 matching lines @@
   EXPECT_EQ(user_prefs::PrefRegistrySyncable::SYNCABLE_PREF,
             website_settings_info->GetPrefRegistrationFlags());
 
   // Check the WebsiteSettingsInfo is registered correctly.
   EXPECT_EQ(website_settings_registry()->Get(CONTENT_SETTINGS_TYPE_COOKIES),
             website_settings_info);
 }
 
 TEST_F(ContentSettingsRegistryTest, Iteration) {
   // Check that plugins and cookies settings appear once during iteration.
+#if !defined(OS_ANDROID) && !defined(OS_IOS)

[raymes, 2016/05/20 19:10:16]

instead of ifdefing this out, perhaps we could just adjust the ifdef at the
bottom so that it says 
#if defined(OS_ANDROID) || defined(OS_IOS)
  EXPECT_FALSE(plugins_found);
#else
  EXPECT_TRUE(plugins_found);
#endif

[lshang, 2016/05/24 11:55:45]

Done.

   bool plugins_found = false;
+#endif
   bool cookies_found = false;
   for (const ContentSettingsInfo* info : *registry()) {
     ContentSettingsType type = info->website_settings_info()->type();
     EXPECT_EQ(registry()->Get(type), info);
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
     if (type == CONTENT_SETTINGS_TYPE_PLUGINS) {
       EXPECT_FALSE(plugins_found);
       plugins_found = true;
-    } else if (type == CONTENT_SETTINGS_TYPE_COOKIES) {
+    }
+#endif
+    if (type == CONTENT_SETTINGS_TYPE_COOKIES) {
       EXPECT_FALSE(cookies_found);
       cookies_found = true;
     }
   }
 
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
   EXPECT_TRUE(plugins_found);
+#endif
   EXPECT_TRUE(cookies_found);
 }
 
 }  // namespace content_settings