Fix update of validity cache value, so that it reflects the correct state of any FormControlElement.

Source/core/html/HTMLTextAreaElement.cpp

Index: Source/core/html/HTMLTextAreaElement.cpp
diff --git a/Source/core/html/HTMLTextAreaElement.cpp b/Source/core/html/HTMLTextAreaElement.cpp
index 8480199a6472428e6aefb13aeb91361ec073a5cf..efde5ee2ac29cc6dc207d99d44c96602bad08f5e 100644
--- a/Source/core/html/HTMLTextAreaElement.cpp
+++ b/Source/core/html/HTMLTextAreaElement.cpp
@@ -83,7 +83,6 @@ HTMLTextAreaElement::HTMLTextAreaElement(Document& document, HTMLFormElement* fo
     , m_cols(defaultCols)
     , m_wrap(SoftWrap)
     , m_isDirty(false)
-    , m_valueIsUpToDate(true)
 {
     ScriptWrappable::init(this);
 }
@@ -268,7 +267,8 @@ void HTMLTextAreaElement::handleFocusEvent(Element*, FocusType)
 void HTMLTextAreaElement::subtreeHasChanged()
 {
     setChangedSinceLastFormControlChangeEvent(true);
-    m_valueIsUpToDate = false;
+    // Update Value to match the renderer
+    updateValue();
     setNeedsValidityCheck();
     setAutofilled(false);
 
@@ -317,12 +317,8 @@ String HTMLTextAreaElement::sanitizeUserInputValue(const String& proposedValue,
 
 void HTMLTextAreaElement::updateValue() const
 {
-    if (m_valueIsUpToDate)
-        return;
-
     ASSERT(renderer());
     m_value = innerEditorValue();
-    const_cast<HTMLTextAreaElement*>(this)->m_valueIsUpToDate = true;
     const_cast<HTMLTextAreaElement*>(this)->notifyFormStateChanged();
     m_isDirty = true;
     const_cast<HTMLTextAreaElement*>(this)->updatePlaceholderVisibility(false);
@@ -330,7 +326,6 @@ void HTMLTextAreaElement::updateValue() const
 
 String HTMLTextAreaElement::value() const
 {
-    updateValue();

[spartha, 2014/09/02 14:09:55]

Replaced by a call from subTreeChanged()

     return m_value;
 }
 
@@ -397,12 +392,6 @@ void HTMLTextAreaElement::setValueCommon(const String& newValue, TextFieldEventB
     }
 }
 
-void HTMLTextAreaElement::setInnerEditorValue(const String& value)
-{
-    HTMLTextFormControlElement::setInnerEditorValue(value);
-    m_valueIsUpToDate = true;
-}
-
 String HTMLTextAreaElement::defaultValue() const
 {
     StringBuilder value;