* Add WebPreference::interactive_form_validation_enabled

  The default value is true.

* Add --disable-interactive-form-validation flag and about:flags interface

The interactive form validation feature might cause web site
compatibility issues.  So we provide a way to disable it just in case.

BUG=45804,54368
TEST=manual; Open the URL "data:text/html,<form><input required></form>", click
  the input field, and press ENTER key.
 - A validation message is shown by default
 - If you run Chrome with --disable-interactive-form-validation, no validation
   message is shown and the form is submitted.
 - If you enable "Disable HTML5 interacrive form validation" flag on
   about:flags, no validation message is shown and the form is submitted.
Review URL: http://codereview.chromium.org/6329005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@71902 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 5 insertions, 1 deletions

diff --git a/webkit/glue/webpreferences.cc b/webkit/glue/webpreferences.cc
index 70ed31a..de2fc07 100644
--- a/webkit/glue/webpreferences.cc
+++ b/webkit/glue/webpreferences.cc
@@ -67,7 +67,8 @@ WebPreferences::WebPreferences()
       accelerated_video_enabled(false),
       accelerated_2d_canvas_enabled(false),
       accelerated_plugins_enabled(false),
-      memory_info_enabled(false) {
+      memory_info_enabled(false),
+      interactive_form_validation_enabled(true) {
 }
 
 WebPreferences::~WebPreferences() {
@@ -185,4 +186,7 @@ void WebPreferences::Apply(WebView* web_view) const {
   // Tabs to link is not part of the settings. WebCore calls
   // ChromeClient::tabsToLinks which is part of the glue code.
   web_view->setTabsToLinks(tabs_to_links);
+
+  settings->setInteractiveFormValidationEnabled(
+      interactive_form_validation_enabled);
 }