Rename Net.QuicSession.TooManyOpenStream -> Net.QuicSession.TooManyOpenStreams

Review URL: https://codereview.chromium.org/1063483002

Cr-Commit-Position: refs/heads/master@{#323950}

net/quic/quic_client_session.cc

@@ -435,7 +435,7 @@ QuicClientSession::CreateOutgoingReliableStreamImpl() {
   UMA_HISTOGRAM_COUNTS("Net.QuicSession.NumOpenStreams", GetNumOpenStreams());
   // The previous histogram puts 100 in a bucket betweeen 86-113 which does
   // not shed light on if chrome ever things it has more than 100 streams open.
-  UMA_HISTOGRAM_BOOLEAN("Net.QuicSession.TooManyOpenStream",
+  UMA_HISTOGRAM_BOOLEAN("Net.QuicSession.TooManyOpenStreams",
                         GetNumOpenStreams() > 100);
   return stream;
 }

tools/metrics/histograms/histograms.xml

@@ -20200,6 +20200,16 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   </summary>
 </histogram>
 
+<histogram name="Net.QuicSession.TooManyOpenStream" enum="BooleanTooMany">
+  <owner>rch@chromium.org</owner>
+  <obsolete>
+    Deprecated 04/2015. Tracked as Net.QuicSession.TooManyOpenStreams.
+  </obsolete>
+  <summary>
+    True if more than 100 streams are open when a new stream is activated.
+  </summary>
+</histogram>
+
 <histogram name="Net.QuicSession.TooManyOpenStreams" enum="BooleanTooMany">
   <owner>rch@chromium.org</owner>
   <summary>