Add request throttler to thumbnail fetching for articles on mobile NTP

components/ntp_snippets/pref_names.h

Index: components/ntp_snippets/pref_names.h
diff --git a/components/ntp_snippets/pref_names.h b/components/ntp_snippets/pref_names.h
index 4fdea4ebba7065ad0935aa66825b9bf055e1dc6a..7ee0347e4a55d47f48e8568824e655ee1cdff1ff 100644
--- a/components/ntp_snippets/pref_names.h
+++ b/components/ntp_snippets/pref_names.h
@@ -13,10 +13,20 @@ extern const char kEnableSnippets[];
 extern const char kSnippetHosts[];
 
 // The pref name for today's count of NTPSnippetsFetcher requests, so far.
-extern const char kSnippetFetcherQuotaCount[];
+extern const char kSnippetFetcherRequestCount[];
+// The pref name for today's count of NTPSnippetsFetcher interactive requests.
+extern const char kSnippetFetcherInteractiveRequestCount[];
 // The pref name for the current day for the counter of NTPSnippetsFetcher
 // requests.
-extern const char kSnippetFetcherQuotaDay[];
+extern const char kSnippetFetcherRequestsDay[];
+
+// The pref name for today's count of NTPSnippetsFetcher requests, so far.

[Marc Treib, 2016/08/10 11:38:15]

Update comment

[jkrcal, 2016/08/10 11:57:04]

Done.

+extern const char kSnippetThumbnailsRequestCount[];
+// The pref name for today's count of NTPSnippetsFetcher requests, so far.

[Marc Treib, 2016/08/10 11:38:15]

Here too

[jkrcal, 2016/08/10 11:57:03]

Done.

+extern const char kSnippetThumbnailsInteractiveRequestCount[];
+// The pref name for the current day for the counter of NTPSnippetsFetcher

[Marc Treib, 2016/08/10 11:38:15]

And here

[jkrcal, 2016/08/10 11:57:04]

Done.

+// requests.
+extern const char kSnippetThumbnailsRequestsDay[];
 
 }  // namespace prefs
 }  // namespace ntp_snippets