Fix comparison in window_sizer_linux. There can be multiple desktops so data_...

chrome/browser/window_sizer_linux.cc

 // Copyright (c) 2009 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/window_sizer.h"
 
 #include <gtk/gtk.h>
 
 #include "base/logging.h"
 #include "chrome/browser/browser.h"
@@ skipping 40 matching lines @@
   void UpdateWorkAreas() {
     // TODO(thestig) Implement multi-monitor support.
     work_areas_.clear();
     work_areas_.push_back(GetPrimaryMonitorBounds());
   }
 
  private:
   // Get the available screen space as a gfx::Rect, or return false if
   // if it's unavailable (i.e. the window manager doesn't support
   // retrieving this).
+  // TODO(thestig) Use _NET_CURRENT_DESKTOP here as well?
   bool GetScreenWorkArea(gfx::Rect* out_rect) const {
     gboolean ok;
     guchar* raw_data = NULL;
     gint data_len = 0;
     ok = gdk_property_get(gdk_get_default_root_window(),  // a gdk window
                           gdk_atom_intern("_NET_WORKAREA", FALSE),  // property
                           gdk_atom_intern("CARDINAL", FALSE),  // property type
                           0,  // byte offset into property
                           0xff,  // property length to retrieve
                           false,  // delete property after retrieval?
                           NULL,  // returned property type
                           NULL,  // returned data format
                           &data_len,  // returned data len
                           &raw_data);  // returned data
     if (!ok)
       return false;
 
     // We expect to get four longs back: x1, y1, x2, y2.
-    if (data_len != 4 * sizeof(glong)) {
+    if (data_len < static_cast<gint>(4 * sizeof(glong))) {
       NOTREACHED();
       g_free(raw_data);
       return false;
     }
 
     glong* data = reinterpret_cast<glong*>(raw_data);
     gint x = data[0];
     gint y = data[1];
     gint width = data[0] + data[2];
     gint height = data[1] + data[3];
     g_free(raw_data);
 
     out_rect->SetRect(x, y, width, height);
     return true;
   }
 
   DISALLOW_COPY_AND_ASSIGN(DefaultMonitorInfoProvider);
 };
 
 // static
 WindowSizer::MonitorInfoProvider*
 WindowSizer::CreateDefaultMonitorInfoProvider() {
   return new DefaultMonitorInfoProvider();
 }