Remove implementation of Panels on OSes other than ChromeOS.

chrome/browser/ui/panels/stacked_panel_drag_handler.cc

Index: chrome/browser/ui/panels/stacked_panel_drag_handler.cc
diff --git a/chrome/browser/ui/panels/stacked_panel_drag_handler.cc b/chrome/browser/ui/panels/stacked_panel_drag_handler.cc
deleted file mode 100644
index de9502afa34dcf633b64e65ae13d611cdd032017..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/panels/stacked_panel_drag_handler.cc
+++ /dev/null
@@ -1,82 +0,0 @@
-// 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/panels/stacked_panel_drag_handler.h"
-
-#include "base/logging.h"
-#include "chrome/browser/ui/panels/panel.h"
-#include "chrome/browser/ui/panels/panel_collection.h"
-#include "chrome/browser/ui/panels/stacked_panel_collection.h"
-#include "ui/gfx/geometry/point.h"
-#include "ui/gfx/geometry/rect.h"
-
-// static
-void StackedPanelDragHandler::HandleDrag(Panel* panel,
-                                         const gfx::Point& target_position,
-                                         bool in_orginal_collection) {
-  DCHECK_EQ(PanelCollection::STACKED, panel->collection()->type());
-
-  StackedPanelCollection* stack = panel->stack();
-  DCHECK(stack);
-
-  // If the panel is in its original stack, only top panel is allowed to drag.
-  if (in_orginal_collection && panel != stack->top_panel())
-    return;
-
-  // Find out if all panels in the stack are being dragged.
-  bool all_panels_under_drag = true;
-  for (StackedPanelCollection::Panels::const_iterator iter =
-           stack->panels().begin();
-       iter != stack->panels().end(); ++iter) {
-    if (!(*iter)->in_preview_mode()) {
-      all_panels_under_drag = false;
-      break;
-    }
-  }
-
-  gfx::Vector2d delta_origin = target_position - panel->GetBounds().origin();
-
-  // If not all panels in the stack are being dragged, it means that these
-  // panels being dragged have just been added to this stack. Dragging these
-  // panels should only cause the horizontal movement due to that y position
-  // of these panels have already aligned.
-  if (!all_panels_under_drag)
-    delta_origin.set_y(0);
-
-  stack->MoveAllDraggingPanelsInstantly(delta_origin);
-}
-
-// static
-void StackedPanelDragHandler::FinalizeDrag(Panel* panel) {
-  DCHECK_EQ(PanelCollection::STACKED, panel->collection()->type());
-
-  StackedPanelCollection* stack = panel->stack();
-  DCHECK(stack);
-
-  // It is only needed when dragging a panel/stack to stack to the top of
-  // another panel/stack.
-  if (stack->top_panel() != panel)
-    return;
-
-  // Find the first non-dragging panel that is used to align all dragging panels
-  // above it to have the same x position. This is because all dragging panels
-  // are only aligned vertically when the stacking occurs.
-  Panel* first_non_dragging_panel = NULL;
-  for (StackedPanelCollection::Panels::const_iterator iter =
-           stack->panels().begin();
-       iter != stack->panels().end(); ++iter) {
-    Panel* panel = *iter;
-    if (!panel->in_preview_mode()) {
-      first_non_dragging_panel = panel;
-      break;
-    }
-  }
-  if (!first_non_dragging_panel)
-    return;
-
-  gfx::Vector2d delta_origin(
-      first_non_dragging_panel->GetBounds().x() - panel->GetBounds().x(),
-      0);
-  stack->MoveAllDraggingPanelsInstantly(delta_origin);
-}