[Android WebView] Enable spatial navigation / DPAD

android_webview/lib/main/aw_main_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 "android_webview/lib/main/aw_main_delegate.h"
 
 #include "android_webview/browser/aw_content_browser_client.h"
 #include "android_webview/browser/gpu_memory_buffer_factory_impl.h"
 #include "android_webview/browser/scoped_allow_wait_for_legacy_web_view_api.h"
 #include "android_webview/lib/aw_browser_dependency_factory_impl.h"
@@ skipping 46 matching lines @@
   // WebView uses the Android system's scrollbars and overscroll glow.
   cl->AppendSwitch(switches::kHideScrollbars);
   cl->AppendSwitch(switches::kDisableOverscrollEdgeEffect);
 
   // Not yet secure in single-process mode.
   cl->AppendSwitch(switches::kDisableExperimentalWebGL);
 
   // Ganesh backed 2D-Canvas is not yet working and causes crashes.
   cl->AppendSwitch(switches::kDisableAccelerated2dCanvas);
 
+  // File system API not supported (requires some new API; internal bug 6930981)
+  // TODO(joth): export and use switches::kDisableFileSystem
+  cl->AppendSwitch("disable-file-system");
+
+  // Enable D-PAD navigation for application compatibility.
+  // TODO(joth): export and use switches::EnableSpatialNavigation.
+  cl->AppendSwitch("enable-spatial-navigation");
+
   return false;
 }
 
 void AwMainDelegate::PreSandboxStartup() {
   // TODO(torne): When we have a separate renderer process, we need to handle
   // being passed open FDs for the resource paks here.
 }
 
 void AwMainDelegate::SandboxInitialized(const std::string& process_type) {
   // TODO(torne): Adjust linux OOM score here.
@@ skipping 48 matching lines @@
         AwBrowserContext* browser_context) {
   return AwGeolocationPermissionContext::Create(browser_context);
 }
 
 content::WebContentsViewDelegate* AwMainDelegate::CreateViewDelegate(
     content::WebContents* web_contents) {
   return AwWebContentsViewDelegate::Create(web_contents);
 }
 
 }  // namespace android_webview