Ensure that the OSK on Windows 8 shows up when we tap on an editable field in any WebContents.

content/browser/renderer_host/render_view_host_impl.cc

Index: content/browser/renderer_host/render_view_host_impl.cc
===================================================================
--- content/browser/renderer_host/render_view_host_impl.cc	(revision 237621)
+++ content/browser/renderer_host/render_view_host_impl.cc	(working copy)
@@ -84,6 +84,8 @@
 #include "content/browser/renderer_host/popup_menu_helper_mac.h"
 #elif defined(OS_ANDROID)
 #include "content/browser/media/android/browser_media_player_manager.h"
+#elif defined(OS_WIN)
+#include "base/win/win_util.h"
 #endif
 
 using base::TimeDelta;
@@ -1262,6 +1264,7 @@
     IPC_MESSAGE_HANDLER(ViewHostMsg_DomOperationResponse,
                         OnDomOperationResponse)
     IPC_MESSAGE_HANDLER(AccessibilityHostMsg_Events, OnAccessibilityEvents)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_FocusedNodeTouched, OnFocusedNodeTouched)
     // Have the super handle all other messages.
     IPC_MESSAGE_UNHANDLED(
         handled = RenderWidgetHostImpl::OnMessageReceived(msg))
@@ -2236,6 +2239,16 @@
       Details<DomOperationNotificationDetails>(&details));
 }
 
+void RenderViewHostImpl::OnFocusedNodeTouched(bool editable) {
+#if defined(OS_WIN) && defined(USE_AURA)
+  if (editable) {
+    base::win::DisplayVirtualKeyboard();
+  } else {
+    base::win::DismissVirtualKeyboard();
+  }
+#endif
+}
+
 #if defined(OS_MACOSX) || defined(OS_ANDROID)
 void RenderViewHostImpl::OnShowPopup(
     const ViewHostMsg_ShowPopup_Params& params) {