ntp_tiles: Cleanup enum names

tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index e3eb69a57bfe340daf0378d74d97fb37d5a4d595..57149242151c60e423bf705d796e35065ec1927c 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -42298,7 +42298,7 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
-<histogram name="NewTabPage.TileType" enum="MostVisitedTileType">
+<histogram name="NewTabPage.TileType" enum="NTPTileType">
   <owner>newt@chromium.org</owner>
   <summary>
     The visual type of each most visited tile displayed on the new tab page,
@@ -42307,7 +42307,7 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
-<histogram name="NewTabPage.TileTypeClicked" enum="MostVisitedTileType">
+<histogram name="NewTabPage.TileTypeClicked" enum="NTPTileType">
   <owner>newt@chromium.org</owner>

[Michael van Ouwerkerk, 2017/03/31 09:01:15]

Is newt still the correct owner for this histogram? He left the project some
time ago. There are more histograms like this, maybe updating the owners is
something for a followup CL.

[Marc Treib, 2017/04/03 13:23:09]

Good point. Yup, I'll do that in a followup.

   <summary>
     The visual type of the most visited item that the user clicked on, e.g.
@@ -102667,29 +102667,6 @@ from previous Chrome versions.
   <int value="11" label="11"/>
 </enum>
 
-<enum name="MostVisitedTileType" type="int">
-  <summary>The visual type of a most visited tile on the new tab page.</summary>
-  <int value="0" label="None">The icon or thumbnail hasn't loaded yet.</int>
-  <int value="1" label="IconReal">
-    The item displays a site's actual favicon or touch icon.
-  </int>
-  <int value="2" label="IconColor">
-    The item displays a color derived from the site's favicon or touch icon.
-  </int>
-  <int value="3" label="IconDefault">
-    The item displays a default gray box in place of an icon.
-  </int>
-  <int value="4" label="ThumbnailLocal">
-    The item displays a locally-captured thumbnail of the site content.
-  </int>
-  <int value="5" label="ThumbnailServer">
-    The item displays a server-provided thumbnail of the site content.
-  </int>
-  <int value="6" label="ThumbnailDefault">
-    The item displays a default graphic in place of a thumbnail.
-  </int>
-</enum>
-
 <enum name="MotionEventToolType" type="int">
   <summary>The type of tool that triggers a pointer-type MotionEvent.</summary>
   <int value="0" label="Unknown">Unknown tool type.</int>
@@ -104125,6 +104102,29 @@ from previous Chrome versions.
   <int value="3" label="Too few URLs, didn't flip tiles 1 and 4"/>
 </enum>
 
+<enum name="NTPTileType" type="int">
+  <summary>The visual type of a most visited tile on the new tab page.</summary>
+  <int value="0" label="None">The icon or thumbnail hasn't loaded yet.</int>
+  <int value="1" label="IconReal">
+    The item displays a site's actual favicon or touch icon.
+  </int>
+  <int value="2" label="IconColor">
+    The item displays a color derived from the site's favicon or touch icon.
+  </int>
+  <int value="3" label="IconDefault">
+    The item displays a default gray box in place of an icon.
+  </int>
+  <int value="4" label="ThumbnailLocal">
+    The item displays a locally-captured thumbnail of the site content.
+  </int>
+  <int value="5" label="ThumbnailServer">
+    The item displays a server-provided thumbnail of the site content.
+  </int>
+  <int value="6" label="ThumbnailDefault">
+    The item displays a default graphic in place of a thumbnail.
+  </int>
+</enum>
+
 <enum name="NTSTATUS" type="int">
   <int value="-1073741818" label="0xC0000006 - STATUS_IN_PAGE_ERROR"/>
   <int value="-1073741808" label="0xC0000010 - STATUS_INVALID_DEVICE_REQUEST"/>