Merge to XFA: Cleanup: Remove CFFL_IFormFiller::GetCommitKey() that always returns 0.

Remove callers and related code that all just pass zeros around.

Also remove CFFL_IFormFiller::GetKeyDown().

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1149623012.

(cherry picked from commit 35c3163d55bebea8095474181f807ddfb2f4f806)

Review URL: https://codereview.chromium.org/1175083003.
diff --git a/fpdfsdk/include/javascript/IJavaScript.h b/fpdfsdk/include/javascript/IJavaScript.h
index d62b68b..d40c87b 100644
--- a/fpdfsdk/include/javascript/IJavaScript.h
+++ b/fpdfsdk/include/javascript/IJavaScript.h
@@ -44,8 +44,8 @@
 	virtual void				OnField_Blur(FX_BOOL bModifier, FX_BOOL bShift, CPDF_FormField* pTarget, const CFX_WideString& Value) = 0;
 
 	virtual void				OnField_Calculate(CPDF_FormField* pSource, CPDF_FormField* pTarget, CFX_WideString& Value, FX_BOOL& bRc) = 0;
-	virtual void				OnField_Format(int nCommitKey, CPDF_FormField* pTarget, CFX_WideString& Value, FX_BOOL bWillCommit) = 0;
-	virtual void				OnField_Keystroke(int nCommitKey, CFX_WideString& strChange, const CFX_WideString& strChangeEx,
+	virtual void				OnField_Format(CPDF_FormField* pTarget, CFX_WideString& Value, FX_BOOL bWillCommit) = 0;
+	virtual void				OnField_Keystroke(CFX_WideString& strChange, const CFX_WideString& strChangeEx,
 									FX_BOOL KeyDown, FX_BOOL bModifier, int &nSelEnd,int &nSelStart, FX_BOOL bShift,
 									CPDF_FormField* pTarget, CFX_WideString& Value, FX_BOOL bWillCommit, 
 									FX_BOOL bFieldFull, FX_BOOL &bRc) = 0;