Make ScriptRegexp for email address a member of EmailInputType.

third_party/WebKit/Source/core/html/forms/EmailInputType.h

Index: third_party/WebKit/Source/core/html/forms/EmailInputType.h
diff --git a/third_party/WebKit/Source/core/html/forms/EmailInputType.h b/third_party/WebKit/Source/core/html/forms/EmailInputType.h
index fb005bd0fb0286d3209b92c3eb846e11b4c4ff2f..7c60c708df6602b601edf75d4107d2055556ebfb 100644
--- a/third_party/WebKit/Source/core/html/forms/EmailInputType.h
+++ b/third_party/WebKit/Source/core/html/forms/EmailInputType.h
@@ -40,11 +40,12 @@ public:
     static InputType* create(HTMLInputElement&);
 
     // They are public for unit testing.
-    CORE_EXPORT static String convertEmailAddressToASCII(const String&);
-    CORE_EXPORT static bool isValidEmailAddress(const String&);
+    CORE_EXPORT static String convertEmailAddressToASCII(const ScriptRegexp&, const String&);
+    CORE_EXPORT static bool isValidEmailAddress(const ScriptRegexp&, const String&);
+    CORE_EXPORT static std::unique_ptr<ScriptRegexp> createEmailRegexp();
 
 private:
-    EmailInputType(HTMLInputElement& element) : BaseTextInputType(element) { }
+    explicit EmailInputType(HTMLInputElement&);
     void countUsage() override;
     const AtomicString& formControlType() const override;
     bool typeMismatchFor(const String&) const override;
@@ -56,8 +57,11 @@ private:
     String convertFromVisibleValue(const String&) const override;
     String visibleValue() const override;
 
+    ScriptRegexp& ensureEmailRegexp() const;
     String convertEmailAddressToUnicode(const String&) const;
     String findInvalidAddress(const String&) const;
+
+    mutable std::unique_ptr<ScriptRegexp> m_emailRegexp;
 };
 
 } // namespace blink