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

chrome/browser/ui/tab_contents/core_tab_helper.cc

Index: chrome/browser/ui/tab_contents/core_tab_helper.cc
===================================================================
--- chrome/browser/ui/tab_contents/core_tab_helper.cc	(revision 237093)
+++ chrome/browser/ui/tab_contents/core_tab_helper.cc	(working copy)
@@ -32,7 +32,7 @@
 #include "ui/gfx/codec/jpeg_codec.h"
 
 #if defined(OS_WIN)
-#include "base/win/win_util.h"
+#include "chrome/browser/ui/touch_web_contents_observer_win.h"
 #endif
 
 using content::WebContents;
@@ -43,6 +43,9 @@
     : content::WebContentsObserver(web_contents),
       delegate_(NULL),
       content_restrictions_(0) {
+#if defined(OS_WIN)
+  TouchWebContentsObserver::CreateForWebContents(web_contents);

[jam, 2013/11/27 17:17:40]

this should be created where CoreTabHelper gets created, not inside
CoreTabHelper. i.e. move this to BrowserTabContents::AttachTabHelpers.

+#endif
 }
 
 CoreTabHelper::~CoreTabHelper() {
@@ -195,8 +198,6 @@
 bool CoreTabHelper::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(CoreTabHelper, message)
-    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_FocusedNodeTouched,
-                        OnFocusedNodeTouched)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_RequestThumbnailForContextNode_ACK,
                         OnRequestThumbnailForContextNodeACK)
     IPC_MESSAGE_UNHANDLED(handled = false)
@@ -204,16 +205,6 @@
   return handled;
 }
 
-void CoreTabHelper::OnFocusedNodeTouched(bool editable) {
-#if defined(OS_WIN) && defined(USE_AURA)
-  if (editable) {
-    base::win::DisplayVirtualKeyboard();
-  } else {
-    base::win::DismissVirtualKeyboard();
-  }
-#endif  // OS_WIN && USE_AURA
-}
-
 // Handles the image thumbnail for the context node, composes a image search
 // request based on the received thumbnail and opens the request in a new tab.
 void CoreTabHelper::OnRequestThumbnailForContextNodeACK(