Remove histograms NewTabPage.IconsReal/IconsColor/IconsGray

components/ntp_tiles/metrics_unittest.cc

Index: components/ntp_tiles/metrics_unittest.cc
diff --git a/components/ntp_tiles/metrics_unittest.cc b/components/ntp_tiles/metrics_unittest.cc
index acb8c5a0ef29409958f283c2b3e394dc67fc92b8..a5ed2c2ca740d90ad1df195fa5d657181fb73b4b 100644
--- a/components/ntp_tiles/metrics_unittest.cc
+++ b/components/ntp_tiles/metrics_unittest.cc
@@ -72,12 +72,6 @@ TEST(RecordPageImpressionTest, ShouldRecordUmaForIcons) {
                           base::Bucket(/*min=*/ICON_COLOR, /*count=*/2)));
   EXPECT_THAT(histogram_tester.GetAllSamples("NewTabPage.TileType.popular"),
               ElementsAre(base::Bucket(/*min=*/ICON_COLOR, /*count=*/1)));
-  EXPECT_THAT(histogram_tester.GetAllSamples("NewTabPage.IconsReal"),
-              ElementsAre(base::Bucket(/*min=*/4, /*count=*/1)));
-  EXPECT_THAT(histogram_tester.GetAllSamples("NewTabPage.IconsColor"),
-              ElementsAre(base::Bucket(/*min=*/3, /*count=*/1)));
-  EXPECT_THAT(histogram_tester.GetAllSamples("NewTabPage.IconsGray"),
-              ElementsAre(base::Bucket(/*min=*/1, /*count=*/1)));
   EXPECT_THAT(histogram_tester.GetAllSamples(
                   "NewTabPage.SuggestionsImpression.IconsReal"),
               ElementsAre(base::Bucket(/*min=*/0, /*count=*/1),
@@ -123,12 +117,6 @@ TEST(RecordPageImpressionTest, ShouldRecordUmaForThumbnails) {
               IsEmpty());
   EXPECT_THAT(histogram_tester.GetAllSamples("NewTabPage.TileType.popular"),
               IsEmpty());
-  EXPECT_THAT(histogram_tester.GetAllSamples("NewTabPage.IconsReal"),
-              IsEmpty());
-  EXPECT_THAT(histogram_tester.GetAllSamples("NewTabPage.IconsColor"),
-              IsEmpty());
-  EXPECT_THAT(histogram_tester.GetAllSamples("NewTabPage.IconsGray"),
-              IsEmpty());
   EXPECT_THAT(histogram_tester.GetAllSamples(
                   "NewTabPage.SuggestionsImpression.IconsReal"),
               IsEmpty());