[Downloads] Some UMA for downloads resumption.

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 4aa4b2d69ec770bda511ec9912331ea769ad0811..dac2f5a998a2473fd09718480915af7360474cd3 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -15510,6 +15510,9 @@ other types of suffix sets.
   <int value="11" label="Calls to AppendDataToFile (Count)"/>
   <int value="12" label="Interrupted at End of Download"/>
   <int value="13" label="Attempt to Append to Detached File"/>
+  <int value="14" label="File Missing After Successful Scan"/>
+  <int value="15" label="Supports ranges and strong validation"/>
+  <int value="16" label="No WebContents at interruption"/>
 </enum>
 
 <enum name="DownloadDatabaseRecordDroppedType" type="int">
@@ -15592,6 +15595,7 @@ other types of suffix sets.
   <int value="1" label="Initiated by Drag-and-drop"/>
   <int value="2" label="Initiated by RPC from Renderer"/>
   <int value="3" label="Initiated by Save from Pepper"/>
+  <int value="4" label="Initiated by Resumption"/>
 </enum>
 
 <enum name="DriveCacheDBOpenStatus" type="int">
@@ -17728,6 +17732,7 @@ other types of suffix sets.
   <int value="10" label="FILE_TRANSIENT_ERROR"/>
   <int value="11" label="FILE_BLOCKED"/>
   <int value="12" label="FILE_SECURITY_CHECK_FAILED"/>
+  <int value="13" label="FILE_TOO_SHORT"/>
   <int value="20" label="NETWORK_FAILED"/>
   <int value="21" label="NETWORK_TIMEOUT"/>
   <int value="22" label="NETWORK_DISCONNECTED"/>