Added a switch to enable a unified text checker and asynchronous

chrome/browser/tab_contents/render_view_host_delegate_helper.cc

Index: chrome/browser/tab_contents/render_view_host_delegate_helper.cc
diff --git a/chrome/browser/tab_contents/render_view_host_delegate_helper.cc b/chrome/browser/tab_contents/render_view_host_delegate_helper.cc
index 704c22aefb2d4ab6cc15155495cbb8658d42b6df..6c5bede3cced39c5183a906057deab34d4d79478 100644
--- a/chrome/browser/tab_contents/render_view_host_delegate_helper.cc
+++ b/chrome/browser/tab_contents/render_view_host_delegate_helper.cc
@@ -505,6 +505,11 @@ WebPreferences RenderViewHostDelegateHelper::GetWebkitPrefs(
 
     web_prefs.visual_word_movement_enabled =
         command_line.HasSwitch(switches::kEnableVisualWordMovement);
+
+    web_prefs.unified_textchecker_enabled =

[darin (slow to review), 2011/11/21 19:04:19]

if both of these fields in WebPreferences are set to the exact same value, then
why do we need both?  do you have another use case in mind where they might
sometimes be different?

+        command_line.HasSwitch(switches::kExperimentalSpellcheckerFeatures);
+    web_prefs.asynchronous_spell_checking_enabled =
+        command_line.HasSwitch(switches::kExperimentalSpellcheckerFeatures);
   }
 
   {  // Certain GPU features might have been blacklisted.