Ignore simulated mouse move messages.

content/browser/renderer_host/render_widget_host_view_win.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 "content/browser/renderer_host/render_widget_host_view_win.h"
 
 #include <algorithm>
 #include <peninputpanel_i.c>
 
 #include "base/bind.h"
@@ skipping 1783 matching lines @@
       return 0;
   }
 }
 
 LRESULT RenderWidgetHostViewWin::OnMouseEvent(UINT message, WPARAM wparam,
                                               LPARAM lparam, BOOL& handled) {
   handled = TRUE;
 
   // Windows sends (fake) mouse messages for touch events.  Ignore these since
   // we're processing WM_TOUCH elsewhere.
-  if (touch_events_enabled_ &&
-      (message == WM_LBUTTONDOWN || message == WM_LBUTTONUP ||
-       message == WM_RBUTTONDOWN || message == WM_RBUTTONUP) &&
+  if (touch_events_enabled_ && (message == WM_MOUSEMOVE ||

[sky, 2012/06/12 16:51:51]

The msdn docs this comes from mention it not working for mousemove and I wasn't
seeing consistent behavior when testing this. Are you sure it works ok on both
win7 and win8 with various hardware?

[girard, 2012/06/15 13:57:28]

Tested on Win8.  Will test on Win7 on Monday.

+      message == WM_LBUTTONDOWN || message == WM_LBUTTONUP ||
+      message == WM_RBUTTONDOWN || message == WM_RBUTTONUP) &&
       (GetMessageExtraInfo() & MOUSEEVENTF_FROMTOUCH) ==
       MOUSEEVENTF_FROMTOUCH)
     return 0;
 
   if (message == WM_MOUSELEAVE)
     ignore_mouse_movement_ = true;
 
   if (mouse_locked_) {
     HandleLockedMouseEvent(message, wparam, lparam);
     MoveCursorToCenterIfNecessary();
@@ skipping 1205 matching lines @@
 void RenderWidgetHostViewWin::ResetPointerDownContext() {
   // If the default focus on the page is on an edit field and we did not
   // receive a focus change in the context of a pointer down message, it means
   // that the pointer down message occurred on the edit field and we should
   // display the on screen keyboard
   if (!received_focus_change_after_pointer_down_ && virtual_keyboard_)
     DisplayOnScreenKeyboardIfNeeded();
   received_focus_change_after_pointer_down_ = false;
   pointer_down_context_ = false;
 }