ntp_tiles: Cleanup enum names

components/ntp_tiles/tile_visual_type.h

Index: components/ntp_tiles/tile_visual_type.h
diff --git a/components/ntp_tiles/tile_visual_type.h b/components/ntp_tiles/tile_visual_type.h
new file mode 100644
index 0000000000000000000000000000000000000000..e1bfea102ee1eb6b68cf8c18889f0f4ffef157c9
--- /dev/null
+++ b/components/ntp_tiles/tile_visual_type.h
@@ -0,0 +1,43 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COMPONENTS_NTP_TILES_TILE_VISUAL_TYPE_H_
+#define COMPONENTS_NTP_TILES_TILE_VISUAL_TYPE_H_
+
+namespace ntp_tiles {
+
+// The visual type of an NTP tile.
+//
+// These values must stay in sync with the NTPTileVisualType enum in
+// histograms.xml.
+//
+// A Java counterpart will be generated for this enum.
+// GENERATED_JAVA_ENUM_PACKAGE: org.chromium.chrome.browser.suggestions
+enum TileVisualType {
+  // The icon or thumbnail hasn't loaded yet.
+  NONE = 0,
+  // The item displays a site's actual favicon or touch icon.
+  ICON_REAL = 1,
+  // The item displays a color derived from the site's favicon or touch icon.
+  ICON_COLOR = 2,
+  // The item displays a default gray box in place of an icon.
+  ICON_DEFAULT = 3,
+  // The number of different tile types that get recorded. Entries below this
+  // are not recorded in UMA.
+  NUM_RECORDED_TILE_TYPES,
+
+  // Deleted: THUMBNAIL_LOCAL = 4
+  // Deleted: THUMBNAIL_SERVER = 5
+  // Deleted: THUMBNAIL_DEFAULT = 6
+
+  // The item displays a thumbnail of the page. Used on desktop.
+  THUMBNAIL,
+  // The tile type has not been determined yet. Used on iOS, until we can detect
+  // when all tiles have loaded.
+  UNKNOWN_TILE_TYPE,
+};
+
+}  // namespace ntp_tiles
+
+#endif  // COMPONENTS_NTP_TILES_TILE_VISUAL_TYPE_H_