[Chrome OS] Clean up BrowserTabStripTracker Init parameter.

chrome/browser/ui/browser_tab_strip_tracker.h

 // Copyright 2015 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.
 
 #ifndef CHROME_BROWSER_UI_BROWSER_TAB_STRIP_TRACKER_H_
 #define CHROME_BROWSER_UI_BROWSER_TAB_STRIP_TRACKER_H_
 
 #include <set>
 
 #include "base/macros.h"
@@ skipping 10 matching lines @@
 // BrowserTabStripTrackerDelegate. BrowserTabStripTracker queries the delegate
 // for each Browser to determine if the Browser should be tracked. A null
 // delegate indicates all Browsers should be observed.
 //
 // If you are interested in BrowserListObserver functions specify a
 // BrowserListObserver in the constructor. OnBrowserAdded() and
 // OnBrowserRemoved() are only called if the delegate indicates the browser
 // should be tracked.
 class BrowserTabStripTracker : public chrome::BrowserListObserver {
  public:
-  // See Init() for details.
-  enum class InitWith {
-    BROWSERS_IN_ACTIVE_DESKTOP,
-    ALL_BROWERS,
-  };
-
   // See class description for details. You only need specify a
   // TabStripModelObserver. |delegate| and |browser_list_observer| are
   // optional.
   BrowserTabStripTracker(TabStripModelObserver* tab_strip_model_observer,
                          BrowserTabStripTrackerDelegate* delegate,
                          BrowserListObserver* browser_list_observer);
   ~BrowserTabStripTracker() override;
 
   // Starts tracking BrowserList for changes and additionally observes the
-  // existing Browsers matching |init_with|. If there is a
-  // BrowserTabStripTrackerDelegate it is called to determine if the Browser
-  // should be observed. If an existing Browser should be observed
-  // TabInsertedAt() is called for any existing tabs. If a delegate needs to
-  // differentiate between Browsers observed by way of Init() vs. a Browser
-  // added after the fact use is_processing_initial_browsers().
-  void Init(InitWith init_with);
+  // existing Browsers. If there is a BrowserTabStripTrackerDelegate it is
+  // called to determine if the Browser should be observed. If an existing
+  // Browser should be observed TabInsertedAt() is called for any existing tabs.
+  // If a delegate needs to differentiate between Browsers observed by way of
+  // Init() vs. a Browser added after the fact use
+  // is_processing_initial_browsers().
+  void Init();
 
   // Returns true if processing an existing Browser in Init().
   bool is_processing_initial_browsers() const {
     return is_processing_initial_browsers_;
   }
 
   // Stops observing the current set of observed browsers and calls
   // BrowserListObserver::OnBrowserRemoved().
   void StopObservingAndSendOnBrowserRemoved();
 
@@ skipping 15 matching lines @@
   TabStripModelObserver* tab_strip_model_observer_;
   BrowserTabStripTrackerDelegate* delegate_;
   BrowserListObserver* browser_list_observer_;
   bool is_processing_initial_browsers_;
   Browsers browsers_observing_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserTabStripTracker);
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_TAB_STRIP_TRACKER_H_