Add histogram to track number of .nexe launches, normalized against opening n...

chrome/browser/nacl_host/nacl_process_host.cc

 // Copyright (c) 2010 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 "build/build_config.h"
 
 #include "chrome/browser/nacl_host/nacl_process_host.h"
 
 #if defined(OS_POSIX)
 #include <fcntl.h>
 #endif
 
 #include "base/command_line.h"
+#include "base/metrics/nacl_histogram.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/renderer_host/resource_message_filter.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/logging_chrome.h"
 #include "chrome/common/nacl_cmd_line.h"
 #include "chrome/common/nacl_messages.h"
 #include "chrome/common/render_messages.h"
 #include "ipc/ipc_switches.h"
 
 #if defined(OS_POSIX)
@@ skipping 83 matching lines @@
     sockets_for_renderer_.push_back(pair[0]);
     sockets_for_sel_ldr_.push_back(pair[1]);
     SetCloseOnExec(pair[0]);
     SetCloseOnExec(pair[1]);
   }
 
   // Launch the process
   if (!LaunchSelLdr()) {
     return false;
   }
-
+  UmaNaclHistogramEnumeration(NACL_STARTED);
   resource_message_filter_ = resource_message_filter;
   reply_msg_ = reply_msg;
 
   return true;
 #endif  // DISABLE_NACL
 }
 
 bool NaClProcessHost::LaunchSelLdr() {
   if (!CreateChannel())
     return false;
@@ skipping 151 matching lines @@
   if (fnIsWow64Process != NULL) {
     BOOL bIsWow64 = FALSE;
     if (fnIsWow64Process(GetCurrentProcess(),&bIsWow64)) {
       if (bIsWow64) {
         running_on_wow64_ = true;
       }
     }
   }
 }
 #endif