UMA: Add Net.WebSocket.DeflateMode

net/websockets/websocket_basic_handshake_stream.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/websockets/websocket_basic_handshake_stream.h"
 
 #include <algorithm>
 #include <iterator>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/base64.h"
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/containers/hash_tables.h"
+#include "base/metrics/histogram.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/time/time.h"
 #include "crypto/random.h"
 #include "net/http/http_request_headers.h"
 #include "net/http/http_request_info.h"
 #include "net/http/http_response_body_drainer.h"
@@ skipping 471 matching lines @@
   // The HttpStreamParser object has a pointer to our ClientSocketHandle. Make
   // sure it does not touch it again before it is destroyed.
   state_.DeleteParser();
   scoped_ptr<WebSocketStream> basic_stream(
       new WebSocketBasicStream(state_.ReleaseConnection(),
                                state_.read_buf(),
                                sub_protocol_,
                                extensions_));
   DCHECK(extension_params_.get());
   if (extension_params_->deflate_enabled) {
+    UMA_HISTOGRAM_ENUMERATION(
+        "Net.WebSocket.DeflateMode",
+        extension_params_->deflate_mode,
+        WebSocketDeflater::NUM_CONTEXT_TAKEOVER_MODE_TYPES);
+
     return scoped_ptr<WebSocketStream>(
         new WebSocketDeflateStream(basic_stream.Pass(),
                                    extension_params_->deflate_mode,
                                    extension_params_->client_window_bits,
                                    scoped_ptr<WebSocketDeflatePredictor>(
                                        new WebSocketDeflatePredictorImpl)));
   } else {
     return basic_stream.Pass();
   }
 }
@@ skipping 92 matching lines @@
                          &extensions_,
                          &failure_message_,
                          extension_params_.get())) {
     return OK;
   }
   failure_message_ = "Error during WebSocket handshake: " + failure_message_;
   return ERR_INVALID_RESPONSE;
 }
 
 }  // namespace net