Not allowing user to type more chars than max length value for text field.

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 2001 matching lines @@
 void RenderViewImpl::focusNext() {
   Send(new ViewHostMsg_TakeFocus(routing_id_, false));
 }
 
 void RenderViewImpl::focusPrevious() {
   Send(new ViewHostMsg_TakeFocus(routing_id_, true));
 }
 
 void RenderViewImpl::focusedNodeChanged(const WebNode& node) {
   has_scrolled_focused_editable_node_into_rect_ = false;
-
-  Send(new ViewHostMsg_FocusedNodeChanged(routing_id_, IsEditableNode(node)));
+  int max_length_;
+  if (IsEditableNode(node)) {
+    const WebElement& element = node.toConst<WebElement>();
+    if (toWebInputElement(&element))
+      max_length_ = toWebInputElement(&element)->maxLength();
+  }
+  Send(new ViewHostMsg_FocusedNodeChanged(
+      routing_id_, IsEditableNode(node), max_length_));
 
   FOR_EACH_OBSERVER(RenderViewObserver, observers_, FocusedNodeChanged(node));
 
   // TODO(dmazzoni): this should be part of RenderFrameObserver.
   main_render_frame()->FocusedNodeChanged(node);
 }
 
 void RenderViewImpl::didUpdateLayout() {
   FOR_EACH_OBSERVER(RenderViewObserver, observers_, DidUpdateLayout());
 
@@ skipping 2256 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