Implement autocapitalize in Blink to be used by the embedder.

Source/core/html/HTMLTextFormControlElement.h

Index: Source/core/html/HTMLTextFormControlElement.h
diff --git a/Source/core/html/HTMLTextFormControlElement.h b/Source/core/html/HTMLTextFormControlElement.h
index fb0ba4458a5eaa7f0a4af4c9c163db5294782cc9..6b6a96bdc00ca5d13108bd9ae6a8e8f688b5b8a6 100644
--- a/Source/core/html/HTMLTextFormControlElement.h
+++ b/Source/core/html/HTMLTextFormControlElement.h
@@ -39,7 +39,15 @@ enum TextFieldSelectionDirection { SelectionHasNoDirection, SelectionHasForwardD
 enum TextFieldEventBehavior { DispatchNoEvent, DispatchChangeEvent, DispatchInputAndChangeEvent };
 enum NeedToDispatchSelectEvent { DispatchSelectEvent, NotDispatchSelectEvent };
 
-class CORE_EXPORT HTMLTextFormControlElement : public HTMLFormControlElementWithState {
+enum class TextFieldAutocapitalize : char {
+    Uninitialized,
+    None,
+    Characters,
+    Words,
+    Sentences
+};
+
+class HTMLTextFormControlElement : public HTMLFormControlElementWithState {

[tkent, 2015/03/17 22:53:50]

Do not remove CORE_EXPORT.

[mlamouri (slow - plz ping), 2015/03/18 10:08:16]

Sorry about that, this is a rebase mistake.

 public:
     // Common flag for HTMLInputElement::tooLong(), HTMLTextAreaElement::tooLong(),
     // HTMLInputElement::tooShort() and HTMLTextAreaElement::tooShort().
@@ -81,6 +89,12 @@ public:
     void setSelectionRange(int start, int end, TextFieldSelectionDirection = SelectionHasNoDirection, NeedToDispatchSelectEvent = DispatchSelectEvent, SelectionOption = ChangeSelection);
     PassRefPtrWillBeRawPtr<Range> selection() const;
 
+    virtual bool supportsAutocapitalize() const = 0;
+    virtual TextFieldAutocapitalize defaultAutocapitalizeValue() const = 0;
+    TextFieldAutocapitalize autocapitalizeValue() const;
+    const AtomicString& autocapitalize() const;
+    void setAutocapitalize(const AtomicString&);
+
     virtual void dispatchFormControlChangeEvent() override final;
 
     virtual String value() const = 0;
@@ -155,6 +169,7 @@ private:
     int m_cachedSelectionStart;
     int m_cachedSelectionEnd;
     TextFieldSelectionDirection m_cachedSelectionDirection;
+    TextFieldAutocapitalize m_autocapitalize;

[tkent, 2015/03/17 22:53:50]

Please remove this data member.
We should avoid cache of an attribute value like this.

autocapitalizeValue() and TextFieldAutocaptitalize enum are also unnecessary. 
defaultAutocapitalizeValue() should return an AtomicString.

 };
 
 inline bool isHTMLTextFormControlElement(const Element& element)