Revert "Converting (Alt+LeftClick -> RightClick) to (Search+LeftClick -> RightClick)"

ui/wm/core/accelerator_filter.cc

 // Copyright 2014 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 "ui/wm/core/accelerator_filter.h"
 
 #include "ui/base/accelerators/accelerator.h"
 #include "ui/base/accelerators/accelerator_history.h"
 #include "ui/events/event.h"
 #include "ui/wm/core/accelerator_delegate.h"
@@ skipping 53 matching lines @@
   accelerator_history_->StoreCurrentAccelerator(accelerator);
 
   AcceleratorDelegate::KeyType key_type =
       IsSystemKey(event->key_code()) ? AcceleratorDelegate::KEY_TYPE_SYSTEM
                                      : AcceleratorDelegate::KEY_TYPE_OTHER;
 
   if (delegate_->ProcessAccelerator(*event, accelerator, key_type))
     event->StopPropagation();
 }
 
-void AcceleratorFilter::OnMouseEvent(ui::MouseEvent* event) {
-  // When a mouse event is interleaved between two key accelerators, we must
-  // store this event as an empty default accelerator in the accelerator
-  // history, so that the |AcceleratorController| can notice that something
-  // actually happened between those two key accelerators.
-  // Non-real synthesized mouse events should be ignored because we don't want
-  // them to interfere with tracking the key accelerator.
-  if (event->flags() & ui::EF_IS_SYNTHESIZED)
-    return;
-
-  accelerator_history_->StoreCurrentAccelerator(ui::Accelerator());
-}
-
 }  // namespace wm