Allow fetching personalized snippets from ChromeReader.

components/ntp_snippets/BUILD.gn

Index: components/ntp_snippets/BUILD.gn
diff --git a/components/ntp_snippets/BUILD.gn b/components/ntp_snippets/BUILD.gn
index 65cb5413ff849dd4a2b62b31cbfc79177efd8359..1b008f269b16641eb0407e96c8f56fab670381a9 100644
--- a/components/ntp_snippets/BUILD.gn
+++ b/components/ntp_snippets/BUILD.gn
@@ -8,6 +8,8 @@ source_set("ntp_snippets") {
     "inner_iterator.h",
     "ntp_snippet.cc",
     "ntp_snippet.h",
+    "ntp_snippets_constants.cc",
+    "ntp_snippets_constants.h",
     "ntp_snippets_fetcher.cc",
     "ntp_snippets_fetcher.h",
     "ntp_snippets_scheduler.h",
@@ -34,6 +36,8 @@ source_set("ntp_snippets") {
     "//components/data_use_measurement/core",
     "//components/image_fetcher",
     "//components/metrics",
+    "//components/variations",
+    "//third_party/icu/",
   ]
 }
 
@@ -53,5 +57,6 @@ source_set("unit_tests") {
     "//components/signin/core/browser:test_support",
     "//net:test_support",
     "//testing/gtest",
+    "//third_party/icu/",
   ]
 }