[Chrome OS] Clean up BrowserTabStripTracker Init parameter.

chrome/browser/metrics/tab_usage_recorder.cc

 // Copyright 2016 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/browser/metrics/tab_usage_recorder.h"
 
 #include "base/metrics/histogram_macros.h"
 #include "base/time/time.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "content/public/browser/web_contents_user_data.h"
@@ skipping 103 matching lines @@
 void TabUsageRecorder::TabPinnedStateChanged(TabStripModel* tab_strip_model,
                                              content::WebContents* contents,
                                              int index) {
   GetWebContentsData(contents)->OnTabPinnedStateChanging(
       tab_strip_model->IsTabPinned(index));
 }
 
 TabUsageRecorder::TabUsageRecorder()
     : tab_reactivation_tracker_(this),
       browser_tab_strip_tracker_(this, nullptr, nullptr) {
-  browser_tab_strip_tracker_.Init(
-      BrowserTabStripTracker::InitWith::ALL_BROWERS);
+  browser_tab_strip_tracker_.Init();
 }
 
 TabUsageRecorder::~TabUsageRecorder() = default;
 
 TabUsageRecorder::WebContentsData* TabUsageRecorder::GetWebContentsData(
     content::WebContents* contents) {
   WebContentsData::CreateForWebContents(contents);
   return WebContentsData::FromWebContents(contents);
 }
 
 }  // namespace metrics