Start using the whitelist icon on the NTP.

chrome/browser/android/most_visited_sites.h

Index: chrome/browser/android/most_visited_sites.h
diff --git a/chrome/browser/android/most_visited_sites.h b/chrome/browser/android/most_visited_sites.h
index 33fdca54eeb2d1351652a93f709cf571f9a64efe..50f2383f75888de074df5d70b055e6fc3f31a883 100644
--- a/chrome/browser/android/most_visited_sites.h
+++ b/chrome/browser/android/most_visited_sites.h
@@ -13,6 +13,7 @@
 
 #include "base/android/scoped_java_ref.h"
 #include "base/compiler_specific.h"
+#include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ -88,6 +89,8 @@ class MostVisitedSites : public sync_driver::SyncServiceObserver,
   struct Suggestion {
     base::string16 title;
     GURL url;
+    // This will be empty for all suggestions expect whitelist entry points.

[newt (away), 2016/03/08 22:09:04]

s/expect/except/

Or phrase this as "Only valid for source == WHITELIST (empty otherwise)", like
provider_index below

Also, move large_icon_path below "source" since large_icon_source is optional

[atanasova, 2016/03/09 11:40:55]

Done.

+    base::FilePath large_icon_path;
     MostVisitedSource source;
     // Only valid for source == SUGGESTIONS_SERVICE (-1 otherwise).
     int provider_index;
@@ -97,6 +100,10 @@ class MostVisitedSites : public sync_driver::SyncServiceObserver,
                MostVisitedSource source);
     Suggestion(const base::string16& title,
                const GURL& url,
+               const base::FilePath& large_icon_path,

[newt (away), 2016/03/08 22:09:04]

for consistency, "large_icon_path" should go after "source"

[atanasova, 2016/03/09 11:40:56]

Done.

+               MostVisitedSource source);
+    Suggestion(const base::string16& title,
+               const GURL& url,
                MostVisitedSource source);
     Suggestion(const base::string16& title,
                const std::string& url,