wm: Make WM_MOVE_PANEL use top-right coordinates.

src/platform/window_manager/window_manager.cc

 // Copyright (c) 2009 The Chromium OS 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 "window_manager/window_manager.h"
 
 #include <queue>
 
 extern "C" {
 #include <gdk/gdkx.h>
@@ skipping 144 matching lines @@
       stage_(NULL),
       background_(NULL),
       stage_xid_(None),
       overlay_xid_(None),
       background_xid_(None),
       stacking_manager_(NULL),
       mapped_xids_(new Stacker<XWindow>),
       stacked_xids_(new Stacker<XWindow>),
       active_window_xid_(None),
       query_keyboard_state_timer_(0),
-      showing_hotkey_overlay_(false) {
+      showing_hotkey_overlay_(false),
+      wm_ipc_version_(0) {
   CHECK(xconn_);
   CHECK(clutter_);
 }
 
 WindowManager::~WindowManager() {
   if (wm_xid_)
     xconn_->DestroyWindow(wm_xid_);
   if (background_xid_)
     xconn_->DestroyWindow(background_xid_);
 }
@@ skipping 634 matching lines @@
   }
   return false;
 }
 
 bool WindowManager::HandleClientMessage(const XClientMessageEvent& e) {
   VLOG(2) << "Handling client message for window " << XidStr(e.window)
           << " with type " << XidStr(e.message_type) << " ("
           << GetXAtomName(e.message_type) << ") and format " << e.format;
   WmIpc::Message msg;
   if (wm_ipc_->GetMessage(e, &msg)) {
+    if (msg.type() == WmIpc::Message::WM_NOTIFY_IPC_VERSION) {
+      wm_ipc_version_ = msg.param(0);
+      LOG(INFO) << "Got WM_NOTIFY_IPC_VERSION message saying that Chrome is "
+                << "using version " << wm_ipc_version_;
+      return true;
+    }
     for (std::set<EventConsumer*>::iterator it = event_consumers_.begin();
          it != event_consumers_.end(); ++it) {
       if ((*it)->HandleChromeMessage(msg))
         return true;
     }
     LOG(WARNING) << "Ignoring unhandled WM message of type "
                  << XidStr(msg.type());
   } else {
     for (std::set<EventConsumer*>::iterator it = event_consumers_.begin();
          it != event_consumers_.end(); ++it) {
@@ skipping 636 matching lines @@
   // TODO: Display the message onscreen.
 }
 
 void WindowManager::QueryKeyboardState() {
   std::vector<uint8_t> keycodes;
   xconn_->QueryKeyboardState(&keycodes);
   hotkey_overlay_->HandleKeyboardState(keycodes);
 }
 
 }  // namespace window_manager