Input type url with line break and leading-trailing whitespace should be stripped.

Source/core/html/forms/URLInputType.cpp

Index: Source/core/html/forms/URLInputType.cpp
diff --git a/Source/core/html/forms/URLInputType.cpp b/Source/core/html/forms/URLInputType.cpp
index db6942b559e9790e16c4222df4f0be986cfb7f99..dd16ba32d6bfa666a27dd5c8965cd5a41fa45417 100644
--- a/Source/core/html/forms/URLInputType.cpp
+++ b/Source/core/html/forms/URLInputType.cpp
@@ -33,6 +33,7 @@
 
 #include "core/InputTypeNames.h"
 #include "core/html/HTMLInputElement.h"
+#include "core/html/parser/HTMLParserIdioms.h"
 #include "platform/text/PlatformLocale.h"
 #include "wtf/PassOwnPtr.h"
 
@@ -53,6 +54,12 @@ const AtomicString& URLInputType::formControlType() const
     return InputTypeNames::url;
 }
 
+String URLInputType::sanitizeValue(const String& proposedValue) const
+{
+    String value = proposedValue.removeCharacters(isHTMLLineBreak);
+    return stripLeadingAndTrailingHTMLSpaces(value);
+}
+
 bool URLInputType::typeMismatchFor(const String& value) const
 {
     return !value.isEmpty() && !KURL(KURL(), value).isValid();