Move HTMLFormElement bool members to bit-fields

Source/core/html/HTMLFormElement.h

Index: Source/core/html/HTMLFormElement.h
diff --git a/Source/core/html/HTMLFormElement.h b/Source/core/html/HTMLFormElement.h
index 9dc0a0217938f4d3e7cba1ea485ac254b25e1eae..1772b640e8a19b13adb32930fb9b37439e6321b9 100644
--- a/Source/core/html/HTMLFormElement.h
+++ b/Source/core/html/HTMLFormElement.h
@@ -173,18 +173,18 @@ private:
 #if !ENABLE(OILPAN)
     WeakPtrFactory<HTMLFormElement> m_weakPtrFactory;
 #endif
-    bool m_associatedElementsAreDirty;
-    bool m_imageElementsAreDirty;
-    bool m_hasElementsAssociatedByParser;
-    bool m_didFinishParsingChildren;
+    bool m_associatedElementsAreDirty : 1;
+    bool m_imageElementsAreDirty : 1;
+    bool m_hasElementsAssociatedByParser : 1;
+    bool m_didFinishParsingChildren : 1;
 
-    bool m_wasUserSubmitted;
-    bool m_isSubmittingOrInUserJSSubmitEvent;
-    bool m_shouldSubmit;
+    bool m_wasUserSubmitted : 1;
+    bool m_isSubmittingOrInUserJSSubmitEvent : 1;
+    bool m_shouldSubmit : 1;
 
-    bool m_isInResetFunction;
+    bool m_isInResetFunction : 1;
 
-    bool m_wasDemoted;
+    bool m_wasDemoted : 1;
 
     OwnPtrWillBeMember<GenericEventQueue> m_pendingAutocompleteEventsQueue;
 };