Linux Aura: Hide title bar when CustomFrameView maximized on Unity.

chrome/browser/ui/views/chrome_views_delegate.cc

 // 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.
 
 #include "chrome/browser/ui/views/chrome_views_delegate.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_service.h"
 #include "base/prefs/scoped_user_pref_update.h"
 #include "base/strings/string_util.h"
@@ skipping 21 matching lines @@
 #if defined(USE_AURA)
 #include "ui/aura/root_window.h"
 #endif
 
 #if defined(USE_AURA) && !defined(OS_CHROMEOS)
 #include "chrome/browser/ui/host_desktop.h"
 #include "ui/views/widget/desktop_aura/desktop_native_widget_aura.h"
 #include "ui/views/widget/native_widget_aura.h"
 #endif
 
+#if defined(OS_LINUX) && !defined(OS_CHROMEOS)
+#include "ui/views/linux_ui/linux_ui.h"
+#endif
+
 #if defined(USE_ASH)
 #include "ash/shell.h"
 #include "ash/wm/window_state.h"
 #include "chrome/browser/ui/ash/ash_init.h"
 #include "chrome/browser/ui/ash/ash_util.h"
 #endif
 
 namespace {
 
 // If the given window has a profile associated with it, use that profile's
@@ skipping 243 matching lines @@
     }
   }
 #endif
 }
 
 base::TimeDelta
 ChromeViewsDelegate::GetDefaultTextfieldObscuredRevealDuration() {
   return base::TimeDelta();
 }
 
+bool ChromeViewsDelegate::WindowManagerProvidesTitleBar(bool maximized) {
+#if defined(OS_LINUX) && !defined(OS_CHROMEOS)
+  // On Ubuntu Unity, the system always provides a title bar for maximized
+  // windows.
+  views::LinuxUI* ui = views::LinuxUI::instance();
+  return maximized && ui && ui->UnityIsRunning();
+#endif
+
+  return false;
+}
+
 #if !defined(USE_AURA) && !defined(USE_CHROMEOS)
 views::Widget::InitParams::WindowOpacity
 ChromeViewsDelegate::GetOpacityForInitParams(
     const views::Widget::InitParams& params) {
   return views::Widget::InitParams::OPAQUE_WINDOW;
 }
 #endif