Introduces window_finder_android.cc

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

 // 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 "chrome/browser/ui/views/tabs/tab_drag_controller.h"
 
 #include <math.h>
 #include <set>
 
 #include "base/auto_reset.h"
@@ skipping 1777 matching lines @@
 
   gfx::Point point = point_in_screen;
   views::View::ConvertPointFromScreen(toplevel_view, &point);
   return point.OffsetFromOrigin();
 }
 
 gfx::NativeWindow TabDragController::GetLocalProcessWindow(
     const gfx::Point& screen_point,
     bool exclude_dragged_view) {
   std::set<gfx::NativeWindow> exclude;
-  if (exclude_dragged_view) {
-    gfx::NativeWindow dragged_window =
-        attached_tabstrip_->GetWidget()->GetNativeWindow();
-    if (dragged_window)
-      exclude.insert(dragged_window);
-  }
+  gfx::NativeWindow dragged_window =
+      attached_tabstrip_->GetWidget()->GetNativeWindow();
+  if (exclude_dragged_view && dragged_window)
+    exclude.insert(dragged_window);
+  gfx::NativeWindow root_window =
+      dragged_window ? dragged_window->GetRootWindow() : nullptr;

[sky, 2015/11/06 17:26:56]

This is aura specific right? Can we instead pass in dragged_window and let the
implementations that want the root get it?

[bshe, 2015/11/06 21:13:21]

Done. 

 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
   // Exclude windows which are pending deletion via Browser::TabStripEmpty().
   // These windows can be returned in the Linux Aura port because the browser
   // window which was used for dragging is not hidden once all of its tabs are
   // attached to another browser window in DragBrowserToNewTabStrip().
   // TODO(pkotwicz): Fix this properly (crbug.com/358482)
   BrowserList* browser_list = BrowserList::GetInstance(
       chrome::HOST_DESKTOP_TYPE_NATIVE);
   for (BrowserList::const_iterator it = browser_list->begin();
        it != browser_list->end(); ++it) {
     if ((*it)->tab_strip_model()->empty())
       exclude.insert((*it)->window()->GetNativeWindow());
   }
 #endif
-  return GetLocalProcessWindowAtPoint(host_desktop_type_,
-                                      screen_point,
-                                      exclude);
-
+  return GetLocalProcessWindowAtPoint(host_desktop_type_, screen_point, exclude,
+                                      root_window);
 }