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/src/javascript/Field.cpp b/fpdfsdk/src/javascript/Field.cpp
index 52126bc..3c407b1 100644
--- a/fpdfsdk/src/javascript/Field.cpp
+++ b/fpdfsdk/src/javascript/Field.cpp
@@ -256,7 +256,7 @@
 				ASSERT(pWidget != NULL);
 
 				FX_BOOL bFormated = FALSE;
-				CFX_WideString sValue = pWidget->OnFormat(0, bFormated);
+				CFX_WideString sValue = pWidget->OnFormat(bFormated);
 				if (bFormated)
 					pWidget->ResetAppearance(sValue.c_str(), FALSE);
 				else
@@ -313,7 +313,7 @@
 			if (nFieldType == FIELDTYPE_COMBOBOX || nFieldType == FIELDTYPE_TEXTFIELD)
 			{
 				FX_BOOL bFormated = FALSE;
-				CFX_WideString sValue = pWidget->OnFormat(0, bFormated);
+				CFX_WideString sValue = pWidget->OnFormat(bFormated);
 				if (bFormated)
 					pWidget->ResetAppearance(sValue.c_str(), FALSE);
 				else