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

chrome/browser/chromeos/events/event_rewriter.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 "chrome/browser/chromeos/events/event_rewriter.h"
 
 #include <vector>
 
 #include "ash/sticky_keys/sticky_keys_controller.h"
 #include "ash/wm/window_state.h"
@@ skipping 880 matching lines @@
 void EventRewriter::RewriteLocatedEvent(const ui::Event& event,
                                         int* flags) {
   const PrefService* pref_service = GetPrefService();
   if (!pref_service)
     return;
   *flags = GetRemappedModifierMasks(*pref_service, event, *flags);
 }
 
 int EventRewriter::RewriteModifierClick(const ui::MouseEvent& mouse_event,
                                         int* flags) {
-  // Remap Search+Button1 to Button3.
-  const int kSearchLeftButton =
-      (ui::EF_COMMAND_DOWN | ui::EF_LEFT_MOUSE_BUTTON);
-  if (((*flags & kSearchLeftButton) == kSearchLeftButton) &&
+  // Remap Alt+Button1 to Button3.
+  const int kAltLeftButton = (ui::EF_ALT_DOWN | ui::EF_LEFT_MOUSE_BUTTON);
+  if (((*flags & kAltLeftButton) == kAltLeftButton) &&
       ((mouse_event.type() == ui::ET_MOUSE_PRESSED) ||
        pressed_device_ids_.count(mouse_event.source_device_id()))) {
-    *flags &= ~kSearchLeftButton;
+    *flags &= ~kAltLeftButton;
     *flags |= ui::EF_RIGHT_MOUSE_BUTTON;
     if (mouse_event.type() == ui::ET_MOUSE_PRESSED)
       pressed_device_ids_.insert(mouse_event.source_device_id());
     else
       pressed_device_ids_.erase(mouse_event.source_device_id());
     return ui::EF_RIGHT_MOUSE_BUTTON;
   }
   return ui::EF_NONE;
 }
 
@@ skipping 30 matching lines @@
   for (const auto& keyboard : keyboards) {
     if (keyboard.id == device_id) {
       return KeyboardDeviceAddedInternal(
           keyboard.id, keyboard.name, keyboard.vendor_id, keyboard.product_id);
     }
   }
   return kDeviceUnknown;
 }
 
 }  // namespace chromeos