[remote suggestions] Attach the fetch time to RemoteSnippets, ContentSnippets and SnippetArticle

components/ntp_snippets/remote/remote_suggestion_unittest.cc

Index: components/ntp_snippets/remote/remote_suggestion_unittest.cc
diff --git a/components/ntp_snippets/remote/remote_suggestion_unittest.cc b/components/ntp_snippets/remote/remote_suggestion_unittest.cc
index 7034ebf58b8ac3112ff1009a4cbd595fcd952cfb..4e144822a17dff950c8db14677f12c0058f539ef 100644
--- a/components/ntp_snippets/remote/remote_suggestion_unittest.cc
+++ b/components/ntp_snippets/remote/remote_suggestion_unittest.cc
@@ -9,6 +9,7 @@
 #include "base/json/json_reader.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
+#include "base/time/time.h"
 #include "base/values.h"
 #include "components/ntp_snippets/remote/proto/ntp_snippets.pb.h"
 #include "testing/gmock/include/gmock/gmock.h"
@@ -23,14 +24,15 @@ using ::testing::IsNull;
 using ::testing::NotNull;
 
 std::unique_ptr<RemoteSuggestion> SnippetFromContentSuggestionJSON(
-    const std::string& json) {
+    const std::string& json,
+    const base::Time fetch_time) {
   auto json_value = base::JSONReader::Read(json);
   base::DictionaryValue* json_dict;
   if (!json_value->GetAsDictionary(&json_dict)) {
     return nullptr;
   }
   return RemoteSuggestion::CreateFromContentSuggestionsDictionary(
-      *json_dict, kArticlesRemoteId);
+      *json_dict, kArticlesRemoteId, fetch_time);
 }
 
 TEST(RemoteSuggestionTest, FromChromeContentSuggestionsDictionary) {
@@ -52,7 +54,8 @@ TEST(RemoteSuggestionTest, FromChromeContentSuggestionsDictionary) {
       "    \"deadline\": \"2016-06-30T13:01:37.000Z\"\n"
       "  }\n"
       "}";
-  auto snippet = SnippetFromContentSuggestionJSON(kJsonStr);
+  const base::Time fetch_time = base::Time::Now();
+  auto snippet = SnippetFromContentSuggestionJSON(kJsonStr, fetch_time);
   ASSERT_THAT(snippet, NotNull());
 
   EXPECT_EQ(snippet->id(), "http://localhost/foobar");
@@ -80,7 +83,9 @@ std::unique_ptr<RemoteSuggestion> SnippetFromChromeReaderDict(
   if (!dict) {
     return nullptr;
   }
-  return RemoteSuggestion::CreateFromChromeReaderDictionary(*dict);
+  // TODO
+  return RemoteSuggestion::CreateFromChromeReaderDictionary(*dict,
+                                                            base::Time::Now());
 }
 
 const char kChromeReaderCreationTimestamp[] = "1234567890";
@@ -374,7 +379,8 @@ TEST(RemoteSuggestionTest,
       "  \"ampUrl\" : \"http://localhost/amp\","
       "  \"faviconUrl\" : \"http://localhost/favicon.ico\" "
       "}";
-  auto snippet = SnippetFromContentSuggestionJSON(kJsonStr);
+  const base::Time fetch_time = base::Time::Now();
+  auto snippet = SnippetFromContentSuggestionJSON(kJsonStr, fetch_time);
   ASSERT_THAT(snippet, NotNull());
 
   EXPECT_EQ(snippet->id(), "http://localhost/foobar");
@@ -441,8 +447,8 @@ TEST(RemoteSuggestionTest, NotifcationInfoAllSpecified) {
   auto json = ContentSuggestionSnippet();
   json->SetBoolean("notificationInfo.shouldNotify", true);
   json->SetString("notificationInfo.deadline", "2016-06-30T13:01:37.000Z");
-  auto snippet =
-      RemoteSuggestion::CreateFromContentSuggestionsDictionary(*json, 0);
+  auto snippet = RemoteSuggestion::CreateFromContentSuggestionsDictionary(
+      *json, 0, base::Time::Now());
   EXPECT_TRUE(snippet->should_notify());
   EXPECT_EQ(7200.0f,
             (snippet->notification_deadline() - snippet->publish_date())
@@ -453,8 +459,8 @@ TEST(RemoteSuggestionTest, NotificationInfoDeadlineInvalid) {
   auto json = ContentSuggestionSnippet();
   json->SetBoolean("notificationInfo.shouldNotify", true);
   json->SetInteger("notificationInfo.notificationDeadline", 0);
-  auto snippet =
-      RemoteSuggestion::CreateFromContentSuggestionsDictionary(*json, 0);
+  auto snippet = RemoteSuggestion::CreateFromContentSuggestionsDictionary(
+      *json, 0, base::Time::Now());
   EXPECT_TRUE(snippet->should_notify());
   EXPECT_EQ(base::Time::Max(), snippet->notification_deadline());
 }
@@ -462,8 +468,8 @@ TEST(RemoteSuggestionTest, NotificationInfoDeadlineInvalid) {
 TEST(RemoteSuggestionTest, NotificationInfoDeadlineAbsent) {
   auto json = ContentSuggestionSnippet();
   json->SetBoolean("notificationInfo.shouldNotify", true);
-  auto snippet =
-      RemoteSuggestion::CreateFromContentSuggestionsDictionary(*json, 0);
+  auto snippet = RemoteSuggestion::CreateFromContentSuggestionsDictionary(
+      *json, 0, base::Time::Now());
   EXPECT_TRUE(snippet->should_notify());
   EXPECT_EQ(base::Time::Max(), snippet->notification_deadline());
 }
@@ -471,22 +477,22 @@ TEST(RemoteSuggestionTest, NotificationInfoDeadlineAbsent) {
 TEST(RemoteSuggestionTest, NotificationInfoShouldNotifyInvalid) {
   auto json = ContentSuggestionSnippet();
   json->SetString("notificationInfo.shouldNotify", "non-bool");
-  auto snippet =
-      RemoteSuggestion::CreateFromContentSuggestionsDictionary(*json, 0);
+  auto snippet = RemoteSuggestion::CreateFromContentSuggestionsDictionary(
+      *json, 0, base::Time::Now());
   EXPECT_FALSE(snippet->should_notify());
 }
 
 TEST(RemoteSuggestionTest, NotificationInfoAbsent) {
   auto json = ContentSuggestionSnippet();
-  auto snippet =
-      RemoteSuggestion::CreateFromContentSuggestionsDictionary(*json, 0);
+  auto snippet = RemoteSuggestion::CreateFromContentSuggestionsDictionary(
+      *json, 0, base::Time::Now());
   EXPECT_FALSE(snippet->should_notify());
 }
 
 TEST(RemoteSuggestionTest, ToContentSuggestion) {
   auto json = ContentSuggestionSnippet();
-  auto snippet =
-      RemoteSuggestion::CreateFromContentSuggestionsDictionary(*json, 0);
+  auto snippet = RemoteSuggestion::CreateFromContentSuggestionsDictionary(
+      *json, 0, base::Time::Now());
   ASSERT_THAT(snippet, NotNull());
   ContentSuggestion sugg = snippet->ToContentSuggestion(
       Category::FromKnownCategory(KnownCategories::ARTICLES));
@@ -509,8 +515,8 @@ TEST(RemoteSuggestionTest, ToContentSuggestionWithNotificationInfo) {
   auto json = ContentSuggestionSnippet();
   json->SetBoolean("notificationInfo.shouldNotify", true);
   json->SetString("notificationInfo.deadline", "2016-06-30T13:01:37.000Z");
-  auto snippet =
-      RemoteSuggestion::CreateFromContentSuggestionsDictionary(*json, 0);
+  auto snippet = RemoteSuggestion::CreateFromContentSuggestionsDictionary(
+      *json, 0, base::Time::Now());
   ASSERT_THAT(snippet, NotNull());
   ContentSuggestion sugg = snippet->ToContentSuggestion(
       Category::FromKnownCategory(KnownCategories::ARTICLES));