Fix omnibox height when less than 64 pixels tall.

ui/views/win/hwnd_message_handler.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 UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_H_
 #define UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_H_
 
 #include <windows.h>
 #include <atlbase.h>
 #include <atlapp.h>
@@ skipping 105 matching lines @@
 
   void Init(HWND parent, const gfx::Rect& bounds);
   void InitModalType(ui::ModalType modal_type);
 
   void Close();
   void CloseNow();
 
   gfx::Rect GetWindowBoundsInScreen() const;
   gfx::Rect GetClientAreaBoundsInScreen() const;
   gfx::Rect GetRestoredBounds() const;
+  // This accounts for the case where the widget size is the client size.
+  gfx::Rect GetClientAreaBounds() const;
+
   void GetWindowPlacement(gfx::Rect* bounds,
                           ui::WindowShowState* show_state) const;
 
   void SetBounds(const gfx::Rect& bounds_in_pixels);
   void SetSize(const gfx::Size& size);
   void CenterWindow(const gfx::Size& size);
 
   void SetRegion(HRGN rgn);
 
   void StackAbove(HWND other_hwnd);
@@ skipping 410 matching lines @@
 };
 
 // This window property if set on the window does not activate the window for a
 // touch based WM_MOUSEACTIVATE message.
 const wchar_t kIgnoreTouchMouseActivateForWindow[] =
     L"Chrome.IgnoreMouseActivate";
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIN_HWND_MESSAGE_HANDLER_H_