Remove Network transaction timing histograms.

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 d3cd2895e5a7297c9869e544e87afdc6da22ff4a..2811f44e2d1cf3c9ca851c0460dd7e061ddd2bd2 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -16916,6 +16916,9 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="Net.Priority_High_Latency_b" units="milliseconds">
+  <obsolete>
+    Discontinued as of 12/31/14

[Bence, 2014/10/31 20:42:29]

1. Please consider writing out all digits of the year.
2. Please consider treating this phrase as a sentence and ending it with a full
stop.

(Same for another 7 instances below.)

[cbentzel, 2014/11/01 10:21:37]

Done, made these more consistent with the deprecation sentences in the rest of
the file.

[I also realized I used the date of 12/31 rather than 10/31, but moved to
11/2014 since date has changed]

+  </obsolete>
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <summary>
     Time from the start of the http transaction until the first byte of the
@@ -16936,6 +16939,9 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="Net.Priority_Low_Latency_b" units="milliseconds">
+  <obsolete>
+    Discontinued as of 12/31/14
+  </obsolete>
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <summary>
     Time from the start of the http transaction until the first byte of the
@@ -18652,16 +18658,21 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="Net.Transaction_Bandwidth" units="KB/s">
+  <obsolete>
+    Discontinued as of 4/12/09
+  </obsolete>
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <summary>
-    (discontinued as of 4/12/09) Effective bandwidth in KByte/Second of
-    transactions logged to Transaction_Latency histogram.  Note that only
-    samples durations greater than zero ms, and less than 1 hour are tallied
-    into this ratio.
+    Effective bandwidth in KByte/Second of transactions logged to
+    Transaction_Latency histogram.  Note that only samples durations greater
+    than zero ms, and less than 1 hour are tallied into this ratio.
   </summary>
 </histogram>
 
 <histogram name="Net.Transaction_Connected" units="milliseconds">
+  <obsolete>
+    Discontinued as of 12/31/14
+  </obsolete>
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <summary>
     Time from the when the network transaction is requested, until the first
@@ -18682,6 +18693,9 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="Net.Transaction_Connected_New_b" units="milliseconds">
+  <obsolete>
+    Discontinued as of 12/31/14
+  </obsolete>
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <summary>
     When a new connection is established, the time from the when the network
@@ -18712,6 +18726,9 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="Net.Transaction_Latency_b" units="milliseconds">
+  <obsolete>
+    Discontinued as of 12/31/14
+  </obsolete>
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <summary>
     Time from first byte sent until last byte received by the new network stack.
@@ -18719,6 +18736,9 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="Net.Transaction_Latency_Total" units="milliseconds">
+  <obsolete>
+    Discontinued as of 12/31/14
+  </obsolete>
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <summary>
     Time from when a network transaction is requested until last byte received
@@ -18728,6 +18748,9 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 
 <histogram name="Net.Transaction_Latency_Total_New_Connection"
     units="milliseconds">
+  <obsolete>
+    Discontinued as of 12/31/14
+  </obsolete>
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <summary>
     When an existing TCP/IP connection is NOT reused, the time from when a
@@ -18772,6 +18795,9 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="Net.Transaction_Latency_WinHTTP" units="milliseconds">
+  <obsolete>
+    Discontinued a longggggg time ago.
+  </obsolete>
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <summary>
     Time from first byte sent until last byte received with old WinHTTP network