Check NTP resources only for mobile platforms

components/ntp_tiles/popular_sites_impl_unittest.cc

Index: components/ntp_tiles/popular_sites_impl_unittest.cc
diff --git a/components/ntp_tiles/popular_sites_impl_unittest.cc b/components/ntp_tiles/popular_sites_impl_unittest.cc
index a80aa92ef6669747deecc860d3268ea72967f6b6..d5502037fde5e76a6121e43e380427a96b29514a 100644
--- a/components/ntp_tiles/popular_sites_impl_unittest.cc
+++ b/components/ntp_tiles/popular_sites_impl_unittest.cc
@@ -243,7 +243,7 @@ TEST_F(PopularSitesTest, AddsIconResourcesToDefaultPages) {
   std::unique_ptr<PopularSites> popular_sites =
       CreatePopularSites(url_request_context.get());
 
-#if defined(GOOGLE_CHROME_BUILD)
+#if defined(GOOGLE_CHROME_BUILD) && (defined(OS_ANDROID) || defined(OS_IOS))
   ASSERT_FALSE(popular_sites->sites().empty());
   for (const auto& site : popular_sites->sites()) {
     EXPECT_THAT(site.default_icon_resource, Gt(0));