Changes the tabstrip dragging code to use coordinates from the events

chrome/browser/ui/views/tabs/tab_strip.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_strip.h"
 
 #include <algorithm>
 #include <iterator>
 #include <vector>
 
@@ skipping 967 matching lines @@
   // It doesn't make sense to drag tabs out on metro.
   if (base::win::GetMetroModule())
     detach_behavior = TabDragController::NOT_DETACHABLE;
 #endif
   drag_controller_.reset(new TabDragController);
   drag_controller_->Init(
       this, tab, tabs, gfx::Point(x, y), tab->GetMirroredXInView(event.x()),
       selection_model, detach_behavior, move_behavior);
 }
 
-void TabStrip::ContinueDrag(const views::MouseEvent& event) {
-  if (drag_controller_.get())
-    drag_controller_->Drag();
+void TabStrip::ContinueDrag(views::View* view, const gfx::Point& location) {
+  if (drag_controller_.get()) {
+    gfx::Point screen_location(location);
+    views::View::ConvertPointToScreen(view, &screen_location);
+    drag_controller_->Drag(screen_location);
+  }
 }
 
 bool TabStrip::EndDrag(bool canceled) {
   if (!drag_controller_.get())
     return false;
   bool started_drag = drag_controller_->started_drag();
   drag_controller_->EndDrag(canceled);
   return started_drag;
 }
 
@@ skipping 302 matching lines @@
   return View::GetViewByID(view_id);
 }
 
 bool TabStrip::OnMousePressed(const views::MouseEvent& event) {
   UpdateLayoutTypeFromMouseEvent(this, event);
   // We can't return true here, else clicking in an empty area won't drag the
   // window.
   return false;
 }
 
-bool TabStrip::OnMouseDragged(const views::MouseEvent&  event) {
-  if (drag_controller_.get())
-    drag_controller_->Drag();
+bool TabStrip::OnMouseDragged(const views::MouseEvent& event) {
+  ContinueDrag(this, event.location());
   return true;
 }
 
 void TabStrip::OnMouseReleased(const views::MouseEvent& event) {
   EndDrag(false);
   UpdateLayoutTypeFromMouseEvent(this, event);
 }
 
 void TabStrip::OnMouseCaptureLost() {
   EndDrag(true);
@@ skipping 879 matching lines @@
   }
   return NULL;
 }
 
 std::vector<int> TabStrip::GetTabXCoordinates() {
   std::vector<int> results;
   for (int i = 0; i < tab_count(); ++i)
     results.push_back(ideal_bounds(i).x());
   return results;
 }