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 579764af88e3d65748a972badeec900e0ee1eb52..b49d3ca547c1ee7fa5c450ae39abb93a80620389 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -28925,6 +28925,15 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <summary>The scheme of the URL for each main-frame navigation.</summary>
 </histogram>
 
+<histogram name="Navigation.MainFrameScheme.DataUrl.MimeType"
+    enum="DataUrlMimeType">
+  <owner>meacer@chromium.org</owner>
+  <summary>
+    The mime type of the data: URL for each main-frame navigation. This     only

[Alexei Svitkine (slow), 2017/01/13 18:41:26]

Nit: Remove extra whitespace between This and only

+    contains mime types that can run scripts.
+  </summary>
+</histogram>
+
 <histogram name="Navigation.MainFrameSchemeDifferentPage"
     enum="NavigationScheme">
   <owner>cbentzel@chromium.org</owner>
@@ -82191,6 +82200,14 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="15" label="Snackbar promo dismissed (no action taken)"/>
 </enum>
 
+<enum name="DataUrlMimeType" type="int">
+  <int value="0" label="Other"/>
+  <int value="1" label="HTML"/>
+  <int value="2" label="XHTML"/>
+  <int value="3" label="PDF"/>
+  <int value="4" label="SVG"/>
+</enum>
+
 <enum name="DataUsageReportSubmissionResult" type="int">
   <int value="0" label="Successful"/>
   <int value="1" label="Failed"/>