Drop histograms suffixes for the SpdyCwnd field trial.

chrome/renderer/page_load_histograms.cc

 // Copyright (c) 2012 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 "chrome/renderer/page_load_histograms.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 645 matching lines @@
         break;
       case DocumentState::LINK_LOAD_CACHE_STALE_OK:
         PLT_HISTOGRAM(
             "PLT.BeginToFinish_LinkLoadStaleOk_ExtensionWebRequest",
             begin_to_finish_all_loads);
         break;
       default:
         break;
     }
   }
-
-  // Record SpdyCwnd results.
-  if (document_state->was_fetched_via_spdy()) {
-    switch (load_type) {
-      case DocumentState::LINK_LOAD_NORMAL:
-        PLT_HISTOGRAM("PLT.BeginToFinish_LinkLoadNormal_cwndDynamic",
-                      begin_to_finish_all_loads);
-        PLT_HISTOGRAM("PLT.StartToFinish_LinkLoadNormal_cwndDynamic",
-                      start_to_finish_all_loads);
-        PLT_HISTOGRAM("PLT.StartToCommit_LinkLoadNormal_cwndDynamic",
-                      start_to_commit);
-        break;
-      case DocumentState::NORMAL_LOAD:
-        PLT_HISTOGRAM("PLT.BeginToFinish_NormalLoad_cwndDynamic",
-                      begin_to_finish_all_loads);
-        PLT_HISTOGRAM("PLT.StartToFinish_NormalLoad_cwndDynamic",
-                      start_to_finish_all_loads);
-        PLT_HISTOGRAM("PLT.StartToCommit_NormalLoad_cwndDynamic",
-                      start_to_commit);
-        break;
-      default:
-        break;
-    }
-  }
 }
 
 }  // namespace
 
 PageLoadHistograms::PageLoadHistograms(content::RenderView* render_view)
     : content::RenderViewObserver(render_view) {
 }
 
 void PageLoadHistograms::Dump(WebFrame* frame) {
   // We only dump histograms for main frames.
@@ skipping 78 matching lines @@
 
   DCHECK(document_state);
   DCHECK(ds);
   GURL url(ds->request().url());
   Time start = document_state->start_load_time();
   Time finish = document_state->finish_load_time();
   // TODO(mbelshe): should we log more stats?
   VLOG(1) << "PLT: " << (finish - start).InMilliseconds() << "ms "
           << url.spec();
 }