Splits TooltipManager so that it can be ported and stubs out the GTK...

chrome/browser/views/tabs/tab.cc

 // Copyright (c) 2006-2008 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/views/tabs/tab.h"
 
 #include "app/gfx/canvas.h"
 #include "app/gfx/font.h"
 #include "app/gfx/path.h"
 #include "app/l10n_util.h"
@@ skipping 196 matching lines @@
       *tooltip = title;
       return true;
     }
   }
   return false;
 }
 
 bool Tab::GetTooltipTextOrigin(int x, int y, gfx::Point* origin) {
   gfx::Font font;
   origin->set_x(title_bounds().x() + 10);
-#if defined(OS_WIN)
   origin->set_y(-views::TooltipManager::GetTooltipHeight() - 4);
-#endif
   return true;
 }
 
 bool Tab::GetAccessibleRole(AccessibilityTypes::Role* role) {
   DCHECK(role);
 
   *role = AccessibilityTypes::ROLE_PAGETAB;
   return true;
 }
 
@@ skipping 48 matching lines @@
 
   // Close out the path.
   path->lineTo(0, h);
   path->close();
 }
 
 void Tab::ContextMenuClosed() {
   delegate()->StopAllHighlighting();
   menu_controller_ = NULL;
 }