Remove HostDesktopType from BrowserList::GetInstance()

chrome/browser/chromeos/policy/force_maximize_on_first_run_chromeos_browsertest.cc

 // 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.
 
 #include <string>
 
 #include "ash/display/display_manager.h"
 #include "ash/shell.h"
 #include "ash/test/display_manager_test_api.h"
 #include "ash/wm/window_positioner.h"
@@ skipping 45 matching lines @@
  private:
   DISALLOW_COPY_AND_ASSIGN(ForceMaximizeOnFirstRunTest);
 };
 
 IN_PROC_BROWSER_TEST_F(ForceMaximizeOnFirstRunTest, PRE_TwoRuns) {
   SetUpResolution();
   SkipToLoginScreen();
   LogIn(kAccountId, kAccountPassword);
 
   // Check that the first browser window is maximized.
-  const BrowserList* const browser_list =
-      BrowserList::GetInstance(chrome::HOST_DESKTOP_TYPE_ASH);
+  const BrowserList* const browser_list = BrowserList::GetInstance();
   EXPECT_EQ(1U, browser_list->size());
   const Browser* const browser = browser_list->get(0);
   ASSERT_TRUE(browser);
   EXPECT_TRUE(browser->window()->IsMaximized());
 
   // Un-maximize the window as its state will be carried forward to the next
   // opened window.
   browser->window()->Restore();
   EXPECT_FALSE(browser->window()->IsMaximized());
 
@@ skipping 25 matching lines @@
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ForceMaximizePolicyFalseTest);
 };
 
 IN_PROC_BROWSER_TEST_F(ForceMaximizePolicyFalseTest, GeneralFirstRun) {
   SetUpResolution();
   SkipToLoginScreen();
   LogIn(kAccountId, kAccountPassword);
 
-  const BrowserList* const browser_list =
-      BrowserList::GetInstance(chrome::HOST_DESKTOP_TYPE_ASH);
+  const BrowserList* const browser_list = BrowserList::GetInstance();
   EXPECT_EQ(1U, browser_list->size());
   const Browser* const browser = browser_list->get(0);
   ASSERT_TRUE(browser);
   EXPECT_FALSE(browser->window()->IsMaximized());
 }
 
 }  // namespace policy