Do all OOLing in the views code. linux_views now builds clean with the clang plugin.

views/widget/widget_gtk.h

 // Copyright (c) 2010 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 VIEWS_WIDGET_WIDGET_GTK_H_
 #define VIEWS_WIDGET_WIDGET_GTK_H_
 #pragma once
 
 #include <gtk/gtk.h>
 
@@ skipping 248 matching lines @@
   CHROMEGTK_CALLBACK_0(WidgetGtk, void, OnShow);
   CHROMEGTK_CALLBACK_0(WidgetGtk, void, OnHide);
 
   void set_mouse_down(bool mouse_down) { is_mouse_down_ = mouse_down; }
 
   // Do we own the mouse grab?
   bool has_capture() const { return has_capture_; }
 
   // Returns whether capture should be released on mouse release. The default
   // is true.
-  virtual bool ReleaseCaptureOnMouseReleased() { return true; }
+  virtual bool ReleaseCaptureOnMouseReleased();
 
   // Does a mouse grab on this widget.
   virtual void DoGrab();
 
   // Releases a grab done by this widget.
   virtual void ReleaseGrab();
 
   // Invoked when input grab is stolen by other GtkWidget in the same
   // application.
   virtual void HandleGrabBroke();
@@ skipping 154 matching lines @@
   // Valid for the lifetime of StartDragForViewFromMouseEvent, indicates the
   // view the drag started from.
   View* dragged_view_;
 
   DISALLOW_COPY_AND_ASSIGN(WidgetGtk);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_WIDGET_WIDGET_GTK_H_