Make all tests use GetActiveDesktop() instead of hardcoding HOST_DESKTOP_TYPE_NATIVE.

chrome/browser/app_controller_mac_browsertest.mm

 // Copyright (c) 2012 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.
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/command_line.h"
 #include "base/memory/scoped_nsobject.h"
 #include "chrome/app/chrome_command_ids.h"
 #import "chrome/browser/app_controller_mac.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/host_desktop.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #import "chrome/common/chrome_switches.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/web_contents.h"
 
 namespace {
 
 class AppControllerPlatformAppBrowserTest : public InProcessBrowserTest {
  protected:
   AppControllerPlatformAppBrowserTest()
       : native_browser_list(BrowserList::GetInstance(
-                                chrome::HOST_DESKTOP_TYPE_NATIVE)) {
+                                chrome::GetActiveDesktop())) {
   }
 
   virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
     command_line->AppendSwitchASCII(switches::kAppId,
                                     "1234");
   }
 
   // Mac only has the native desktop.
   const BrowserList* native_browser_list;
 };
 
 // Test that if only a platform app window is open and no browser windows are
 // open then a reopen event does nothing.
 IN_PROC_BROWSER_TEST_F(AppControllerPlatformAppBrowserTest,
                        PlatformAppReopenWithWindows) {
   scoped_nsobject<AppController> ac([[AppController alloc] init]);
   NSUInteger old_window_count = [[NSApp windows] count];
   EXPECT_EQ(1u, native_browser_list->size());
   BOOL result = [ac applicationShouldHandleReopen:NSApp hasVisibleWindows:YES];
 
   EXPECT_TRUE(result);
   EXPECT_EQ(old_window_count, [[NSApp windows] count]);
   EXPECT_EQ(1u, native_browser_list->size());
 }
 
 class AppControllerWebAppBrowserTest : public InProcessBrowserTest {
  protected:
   AppControllerWebAppBrowserTest()
       : native_browser_list(BrowserList::GetInstance(
-                                chrome::HOST_DESKTOP_TYPE_NATIVE)) {
+                                chrome::GetActiveDesktop())) {
   }
 
   virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
     command_line->AppendSwitchASCII(switches::kApp, GetAppURL());
   }
 
   std::string GetAppURL() const {
     return "http://example.com/";
   }
 
@@ skipping 11 matching lines @@
   EXPECT_FALSE(result);
   EXPECT_EQ(2u, native_browser_list->size());
 
   Browser* browser = native_browser_list->get(0);
   GURL current_url =
       browser->tab_strip_model()->GetActiveWebContents()->GetURL();
   EXPECT_EQ(GetAppURL(), current_url.spec());
 }
 
 }  // namespace