Clean up some ifdefs around Win Aura.

chrome/browser/ui/views/tabs/tab_drag_controller.cc

Index: chrome/browser/ui/views/tabs/tab_drag_controller.cc
===================================================================
--- chrome/browser/ui/views/tabs/tab_drag_controller.cc	(revision 248569)
+++ chrome/browser/ui/views/tabs/tab_drag_controller.cc	(working copy)
@@ -60,7 +60,7 @@
 #include "ui/events/gestures/gesture_recognizer.h"
 #endif
 
-#if defined(OS_WIN) && defined(USE_AURA)
+#if defined(OS_WIN)
 #include "ui/aura/window.h"
 #include "ui/events/gestures/gesture_recognizer.h"
 #endif
@@ -958,7 +958,7 @@
       target_tabstrip->GetWidget()->SetCapture(attached_tabstrip_);
     else
       browser_widget->ReleaseCapture();
-#if defined(OS_WIN) && defined(USE_AURA)
+#if defined(OS_WIN)
     // The Gesture recognizer does not work well currently when capture changes
     // while a touch gesture is in progress. So we need to manually transfer
     // gesture sequence and the GR's touch events queue to the new window. This
@@ -1459,7 +1459,7 @@
   gfx::Vector2d drag_offset;
   Browser* browser = CreateBrowserForDrag(
       attached_tabstrip_, point_in_screen, &drag_offset, &drag_bounds);
-#if defined(OS_WIN) && defined(USE_AURA)
+#if defined(OS_WIN)
   gfx::NativeView attached_native_view =
     attached_tabstrip_->GetWidget()->GetNativeView();
 #endif
@@ -1468,7 +1468,7 @@
   BrowserView* dragged_browser_view =
       BrowserView::GetBrowserViewForBrowser(browser);
   views::Widget* dragged_widget = dragged_browser_view->GetWidget();
-#if defined(OS_WIN) && defined(USE_AURA)
+#if defined(OS_WIN)
     // The Gesture recognizer does not work well currently when capture changes
     // while a touch gesture is in progress. So we need to manually transfer
     // gesture sequence and the GR's touch events queue to the new window. This