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

chrome/browser/ui/cocoa/notifications/balloon_controller_unittest.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.
 
 #include "base/memory/scoped_nsobject.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/notifications/balloon.h"
 #include "chrome/browser/notifications/balloon_collection.h"
 #include "chrome/browser/notifications/notification.h"
 #include "chrome/browser/notifications/notification_object_proxy.h"
@@ skipping 41 matching lines @@
   }
  private:
   Balloons balloons_;
 };
 
 class BalloonControllerTest : public ChromeRenderViewHostTestHarness {
   virtual void SetUp() OVERRIDE {
     ChromeRenderViewHostTestHarness::SetUp();
     CocoaTest::BootstrapCocoa();
     profile()->CreateRequestContext();
-    Browser::CreateParams native_params(profile(),
-                                        chrome::HOST_DESKTOP_TYPE_NATIVE);
+    Browser::CreateParams native_params(profile(), chrome::GetActiveDesktop());
     browser_.reset(
         chrome::CreateBrowserWithTestWindowForParams(&native_params));
     collection_.reset(new MockBalloonCollection());
   }
 
   virtual void TearDown() OVERRIDE {
     collection_.reset();
     browser_.reset();
     ChromeRenderViewHostTestHarness::TearDown();
   }
@@ skipping 33 matching lines @@
 
   [controller showWindow:nil];
 
   EXPECT_TRUE([controller desiredTotalWidth] > 100);
   EXPECT_TRUE([controller desiredTotalHeight] > 100);
 
   [controller closeBalloon:YES];
 }
 
 }