Grab mouse capture in the WM_POINTERDOWN message handler in the omnibox.

chrome/browser/ui/views/omnibox/omnibox_view_win.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_OMNIBOX_OMNIBOX_VIEW_WIN_H_
 #define CHROME_BROWSER_UI_VIEWS_OMNIBOX_OMNIBOX_VIEW_WIN_H_
 
 #include <atlbase.h>
 #include <atlapp.h>
 #include <atlcrack.h>
@@ skipping 132 matching lines @@
   void HandleExternalMsg(UINT msg, UINT flags, const CPoint& screen_point);
 
   // CWindowImpl
   BEGIN_MSG_MAP(OmniboxViewWin)
     MSG_WM_CHAR(OnChar)
     MSG_WM_CONTEXTMENU(OnContextMenu)
     MSG_WM_COPY(OnCopy)
     MSG_WM_CREATE(OnCreate)
     MSG_WM_CUT(OnCut)
     MESSAGE_HANDLER_EX(WM_GETOBJECT, OnGetObject)
+    MSG_WM_DESTROY(OnDestroy)
     MESSAGE_HANDLER_EX(WM_IME_COMPOSITION, OnImeComposition)
     MESSAGE_HANDLER_EX(WM_IME_NOTIFY, OnImeNotify)
+    MESSAGE_HANDLER_EX(WM_TOUCH, OnTouchEvent)
     MESSAGE_HANDLER_EX(WM_POINTERDOWN, OnPointerDown)
     MESSAGE_HANDLER_EX(WM_POINTERUP, OnPointerUp)
     MSG_WM_KEYDOWN(OnKeyDown)
     MSG_WM_KEYUP(OnKeyUp)
     MSG_WM_KILLFOCUS(OnKillFocus)
     MSG_WM_LBUTTONDBLCLK(OnLButtonDblClk)
     MSG_WM_LBUTTONDOWN(OnLButtonDown)
     MSG_WM_LBUTTONUP(OnLButtonUp)
     MSG_WM_MBUTTONDBLCLK(OnMButtonDblClk)
     MSG_WM_MBUTTONDOWN(OnMButtonDown)
@@ skipping 77 matching lines @@
   // Returns true if |edit_text| starting at |current_pos| is "://".
   static bool SchemeEnd(LPTSTR edit_text, int current_pos, int length);
 
   // Message handlers
   void OnChar(TCHAR ch, UINT repeat_count, UINT flags);
   void OnContextMenu(HWND window, const CPoint& point);
   void OnCopy();
   LRESULT OnCreate(const CREATESTRUCTW* create_struct);
   void OnCut();
   LRESULT OnGetObject(UINT message, WPARAM wparam, LPARAM lparam);
+  void OnDestroy();
   LRESULT OnImeComposition(UINT message, WPARAM wparam, LPARAM lparam);
   LRESULT OnImeNotify(UINT message, WPARAM wparam, LPARAM lparam);
+  LRESULT OnTouchEvent(UINT message, WPARAM wparam, LPARAM lparam);
   LRESULT OnPointerDown(UINT message, WPARAM wparam, LPARAM lparam);
   LRESULT OnPointerUp(UINT message, WPARAM wparam, LPARAM lparam);
   void OnKeyDown(TCHAR key, UINT repeat_count, UINT flags);
   void OnKeyUp(TCHAR key, UINT repeat_count, UINT flags);
   void OnKillFocus(HWND focus_wnd);
   void OnLButtonDblClk(UINT keys, const CPoint& point);
   void OnLButtonDown(UINT keys, const CPoint& point);
   void OnLButtonUp(UINT keys, const CPoint& point);
   void OnMButtonDblClk(UINT keys, const CPoint& point);
   void OnMButtonDown(UINT keys, const CPoint& point);
@@ skipping 244 matching lines @@
   // Instance of accessibility information and handling.
   mutable base::win::ScopedComPtr<IAccessible> autocomplete_accessibility_;
 
   // The native view host.
   views::NativeViewHost* native_view_host_;
 
   DISALLOW_COPY_AND_ASSIGN(OmniboxViewWin);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_OMNIBOX_OMNIBOX_VIEW_WIN_H_