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

chrome/browser/ui/cocoa/dev_tools_controller_browsertest.mm

 // Copyright 2013 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 "chrome/browser/ui/cocoa/dev_tools_controller.h"
 
 #include "chrome/browser/devtools/devtools_window.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/browser_window.h"
@@ skipping 105 matching lines @@
   // Update the offset and verify that the view is resized.
   CGFloat new_offset = 25;
   [controller() setTopContentOffset:new_offset];
   EXPECT_EQ(height - new_offset, NSHeight([web_view bounds]));
   EXPECT_EQ(0, NSMinY([web_view bounds]));
 }
 
 // Verify that the dev tools undocked window is layed out correctly.
 IN_PROC_BROWSER_TEST_F(DevToolsControllerTest, UndockedOffset) {
   BrowserList* browser_list =
-      BrowserList::GetInstance(chrome::HOST_DESKTOP_TYPE_NATIVE);
+      BrowserList::GetInstance(chrome::GetActiveDesktop());
   EXPECT_EQ(1u, browser_list->size());
   SetDockSide(DEVTOOLS_DOCK_SIDE_UNDOCKED);
   EXPECT_EQ(2u, browser_list->size());
 
   Browser* dev_tools_browser = browser_list->get(1);
   BrowserWindowController* window_controller =
       [BrowserWindowController browserWindowControllerForWindow:
               dev_tools_browser->window()->GetNativeWindow()];
   EXPECT_EQ(0.0, [[window_controller devToolsController] topContentOffset]);
 }
@@ skipping 11 matching lines @@
   EXPECT_FALSE(dev_tools_view->GetAllowOverlappingViews());
 
   // With the find bar.
   browser()->GetFindBarController()->find_bar()->Show(false);
   EXPECT_TRUE(dev_tools_view->GetAllowOverlappingViews());
 
   // Without the find bar.
   browser()->GetFindBarController()->find_bar()->Hide(false);
   EXPECT_FALSE(dev_tools_view->GetAllowOverlappingViews());
 }