Fixed the insertion handle showing issue on readonly element.

content/renderer/render_view_impl.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 "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/auto_reset.h"
@@ skipping 2502 matching lines @@
 
 bool RenderViewImpl::IsEditableNode(const WebNode& node) const {
   if (node.isNull())
     return false;
 
   if (node.isContentEditable())
     return true;
 
   if (node.isElementNode()) {
     const WebElement& element = node.toConst<WebElement>();
-    if (element.isTextFormControlElement())
-      return true;
+    if (element.isTextFormControlElement()) {
+      if (!(element.hasAttribute("readonly") ||
+            element.hasAttribute("disabled")))
+        return true;
+    }
 
     // Also return true if it has an ARIA role of 'textbox'.
     for (unsigned i = 0; i < element.attributeCount(); ++i) {
       if (LowerCaseEqualsASCII(element.attributeLocalName(i), "role")) {
         if (LowerCaseEqualsASCII(element.attributeValue(i), "textbox"))
           return true;
         break;
       }
     }
   }
@@ skipping 1655 matching lines @@
     std::vector<gfx::Size> sizes;
     ConvertToFaviconSizes(icon_urls[i].sizes(), &sizes);
     if (!url.isEmpty())
       urls.push_back(
           FaviconURL(url, ToFaviconType(icon_urls[i].iconType()), sizes));
   }
   SendUpdateFaviconURL(urls);
 }
 
 }  // namespace content