Packaged apps manifest requires 'fullscreen' permission for HTML5 api.

chrome/browser/ui/extensions/shell_window.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/extensions/shell_window.h"
 
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/extension_process_manager.h"
 #include "chrome/browser/extensions/extension_system.h"
@@ skipping 524 matching lines @@
   DCHECK(source == web_contents_.get());
   if (changed_flags & content::INVALIDATE_TYPE_TITLE)
     native_app_window_->UpdateWindowTitle();
   else if (changed_flags & content::INVALIDATE_TYPE_TAB)
     native_app_window_->UpdateWindowIcon();
 }
 
 void ShellWindow::ToggleFullscreenModeForTab(content::WebContents* source,
                                              bool enter_fullscreen) {
   DCHECK(source == web_contents_.get());
-  native_app_window_->SetFullscreen(enter_fullscreen);
+  if (source != web_contents_.get())
+    return;
+
+  bool has_permission = IsExtensionWithPermissionOrSuggestInConsole(
+      APIPermission::kFullscreen,
+      extension_,
+      web_contents_->GetRenderViewHost());
+
+  if (has_permission)
+    native_app_window_->SetFullscreen(enter_fullscreen);
 }
 
 bool ShellWindow::IsFullscreenForTabOrPending(
     const content::WebContents* source) const {
   DCHECK(source == web_contents_.get());
   return native_app_window_->IsFullscreenOrPending();
 }
 
 void ShellWindow::Observe(int type,
                           const content::NotificationSource& source,
@@ skipping 80 matching lines @@
     const extensions::DraggableRegion& region = *iter;
     sk_region->op(
         region.bounds.x(),
         region.bounds.y(),
         region.bounds.right(),
         region.bounds.bottom(),
         region.draggable ? SkRegion::kUnion_Op : SkRegion::kDifference_Op);
   }
   return sk_region;
 }