Switch ChildProcess.* enum histograms from COUNTS to ENUMERATION.

content/browser/browser_child_process_host.cc

 // Copyright (c) 2011 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 "content/browser/browser_child_process_host.h"
 
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
@@ skipping 131 matching lines @@
 void BrowserChildProcessHost::OnChildDisconnected() {
   DCHECK(handle() != base::kNullProcessHandle);
   int exit_code;
   base::TerminationStatus status = GetChildTerminationStatus(&exit_code);
   switch (status) {
     case base::TERMINATION_STATUS_PROCESS_CRASHED:
     case base::TERMINATION_STATUS_ABNORMAL_TERMINATION: {
       OnProcessCrashed(exit_code);
       // Report that this child process crashed.
       Notify(content::NOTIFICATION_CHILD_PROCESS_CRASHED);
-      UMA_HISTOGRAM_COUNTS("ChildProcess.Crashes", this->type());
+      UMA_HISTOGRAM_ENUMERATION("ChildProcess.Crashed",
+                                this->type(), MAX_PROCESS);
       if (disconnect_was_alive_) {
-        UMA_HISTOGRAM_COUNTS("ChildProcess.CrashesWasAlive", this->type());
+        UMA_HISTOGRAM_ENUMERATION("ChildProcess.CrashedWasAlive",
+                                  this->type(), MAX_PROCESS);
       }
       break;
     }
     case base::TERMINATION_STATUS_PROCESS_WAS_KILLED: {
       OnProcessWasKilled(exit_code);
       // Report that this child process was killed.
       Notify(content::NOTIFICATION_CHILD_PROCESS_WAS_KILLED);
-      UMA_HISTOGRAM_COUNTS("ChildProcess.Kills", this->type());
+      UMA_HISTOGRAM_ENUMERATION("ChildProcess.Killed",
+                                this->type(), MAX_PROCESS);
       if (disconnect_was_alive_) {
-        UMA_HISTOGRAM_COUNTS("ChildProcess.KillsWasAlive", this->type());
+        UMA_HISTOGRAM_ENUMERATION("ChildProcess.KilledWasAlive",
+                                  this->type(), MAX_PROCESS);
       }
       break;
     }
     case base::TERMINATION_STATUS_STILL_RUNNING: {
       // exit code not yet available.
       disconnect_was_alive_ = true;
 #if defined(OS_WIN)
       child_watcher_.StartWatching(new base::WaitableEvent(handle()), this);
       return;
 #else
@@ skipping 73 matching lines @@
 
     return *iterator_;
   } while (true);
 
   return NULL;
 }
 
 bool BrowserChildProcessHost::Iterator::Done() {
   return iterator_ == g_child_process_list.Get().end();
 }