Remove NaCl.Startups histogram, this data is tracked in the NaCl plugin now

BUG= none
TEST= none
Review URL: http://codereview.chromium.org/7004040

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@86705 0039d316-1c4b-4281-b951-d872f2087c98

base/base.gypi

@@ -163,8 +163,6 @@
           'message_pump_win.h',
           'metrics/histogram.cc',
           'metrics/histogram.h',
-          'metrics/nacl_histogram.cc',
-          'metrics/nacl_histogram.h',
           'metrics/stats_counters.cc',
           'metrics/stats_counters.h',
           'metrics/stats_table.cc',

base/metrics/nacl_histogram.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.
-
-// nacl_histogram provides an enum and defines a macro that uses definitions
-// from histogram.h. Note that a histogram is an object that aggregates
-// statistics, and can summarize them in various forms, including ASCII
-// graphical, HTML, and numerically.
-// nacl_histogram information is used to compare how many times a native
-// client module has been loaded, compared to the number of chrome starts
-// and number of new tabs created.
-
-
-#include "base/metrics/histogram.h"
-#include "base/metrics/nacl_histogram.h"
-
-// To log histogram data about NaCl.Startups, call this function with
-// a NaClHistogramValue passed in as |hvalue|
-void UmaNaclHistogramEnumeration(NaClHistogramValue histogram_value) {
-  UMA_HISTOGRAM_ENUMERATION("NaCl.Startups", histogram_value,
-    NACL_MAX_HISTOGRAM);
-}
-

base/metrics/nacl_histogram.h

-// 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.
-
-// nacl_histogram provides an enum and defines a macro that uses definitions
-// from histogram.h. Note that a histogram is an object that aggregates
-// statistics, and can summarize them in various forms, including ASCII
-// graphical, HTML, and numerically.
-// nacl_histogram information is used to compare how many times a native
-// client module has been loaded, compared to the number of chrome starts
-// and number of new tabs created.
-
-#ifndef BASE_METRICS_NACL_HISTOGRAM_H_
-#define BASE_METRICS_NACL_HISTOGRAM_H_
-#pragma once
-
-#include "base/base_api.h"
-
-enum NaClHistogramValue {
-  FIRST_TAB_NACL_BASELINE,   // First tab created - a baseline for NaCl starts.
-  NEW_TAB_NACL_BASELINE,     // New tab created -- a baseline for NaCl starts.
-  NACL_STARTED,              // NaCl process started
-  NACL_MAX_HISTOGRAM         // DO NOT USE -- used by histogram for max bound.
-};
-
-// To log histogram data about NaCl.Startups, call this macro with
-// a NaClHistogramValue passed in as |histogram_value|
-BASE_API void UmaNaclHistogramEnumeration(NaClHistogramValue histogram_value);
-
-#endif  // BASE_METRICS_NACL_HISTOGRAM_H_
-

chrome/browser/nacl_host/nacl_process_host.cc

@@ -11,7 +11,6 @@
 #endif
 
 #include "base/command_line.h"
-#include "base/metrics/nacl_histogram.h"
 #include "base/path_service.h"
 #include "base/utf_string_conversions.h"
 #include "base/win/windows_version.h"
@@ -128,7 +127,6 @@ bool NaClProcessHost::Launch(
   if (!LaunchSelLdr()) {
     return false;
   }
-  UmaNaclHistogramEnumeration(NACL_STARTED);
   chrome_render_message_filter_ = chrome_render_message_filter;
   reply_msg_ = reply_msg;
 

chrome/browser/tabs/default_tab_handler.cc

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "base/metrics/nacl_histogram.h"
 #include "chrome/browser/tabs/default_tab_handler.h"
 #include "chrome/browser/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/browser.h"
@@ -14,7 +13,6 @@ DefaultTabHandler::DefaultTabHandler(TabHandlerDelegate* delegate)
     : delegate_(delegate),
       ALLOW_THIS_IN_INITIALIZER_LIST(
           model_(new TabStripModel(this, delegate->GetProfile()))) {
-  UmaNaclHistogramEnumeration(FIRST_TAB_NACL_BASELINE);
   model_->AddObserver(this);
 }
 
@@ -35,7 +33,6 @@ TabStripModel* DefaultTabHandler::GetTabStripModel() const {
 // DefaultTabHandler, TabStripModelDelegate implementation:
 
 TabContentsWrapper* DefaultTabHandler::AddBlankTab(bool foreground) {
-  UmaNaclHistogramEnumeration(NEW_TAB_NACL_BASELINE);
   return delegate_->AsBrowser()->AddBlankTab(foreground);
 }