Replace TOUCH_UI condition in WebUI with dynamic flag.

chrome/browser/ui/webui/chrome_web_ui.cc

 // Copyright (c) 2011 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/webui/chrome_web_ui.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_switches.h"
+#include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/tab_contents/tab_contents.h"
 
 #if defined(TOOLKIT_VIEWS)
 #include "ui/views/widget/widget.h"
 #endif
 
 namespace {
 
 // If true, overrides IsMoreWebUI flag.
 bool override_more_webui_ = false;
 
 }  // namespace
 
 ChromeWebUI::ChromeWebUI(TabContents* contents)
     : WebUI(contents) {
 }
 
 ChromeWebUI::~ChromeWebUI() {
 }
 
 Profile* ChromeWebUI::GetProfile() const {
   return Profile::FromBrowserContext(tab_contents()->browser_context());
 }
 
 bool ChromeWebUI::CanShowBookmarkBar() const {
   return false;
 }
 
+void ChromeWebUI::RenderViewCreated(RenderViewHost* render_view_host) {
+  WebUI::RenderViewCreated(render_view_host);
+
+  // Let the WebUI know that we're looking for UI that's optimized for touch
+  // input.
+  // TODO(rbyers) Figure out the right model for enabling touch-optimized UI
+  // (http://crbug.com/105380).
+  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kTouchOptimizedUI))
+    render_view_host->SetWebUIProperty("touchOptimized", "true");
+}
+
 // static
 bool ChromeWebUI::IsMoreWebUI() {
   bool more_webui = CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kUseMoreWebUI) || override_more_webui_;
 #if defined(TOOLKIT_VIEWS)
   more_webui |= views::Widget::IsPureViews();
 #endif
   return more_webui;
 }
 
 void ChromeWebUI::OverrideMoreWebUI(bool use_more_webui) {
   override_more_webui_ = use_more_webui;
 }