Make the I in IFormFiller explicit

fpdfsdk/cpdfsdk_interform.cpp

Index: fpdfsdk/cpdfsdk_interform.cpp
diff --git a/fpdfsdk/cpdfsdk_interform.cpp b/fpdfsdk/cpdfsdk_interform.cpp
index e9fb5b4de0d9108f84fb0bdb547729caabb21092..502649ead9906134d52441a4eea63228894b466d 100644
--- a/fpdfsdk/cpdfsdk_interform.cpp
+++ b/fpdfsdk/cpdfsdk_interform.cpp
@@ -342,10 +342,11 @@ void CPDFSDK_InterForm::UpdateField(CPDF_FormField* pFormField) {
 
     if (CPDFSDK_Widget* pWidget = GetWidget(pFormCtrl, false)) {
       CPDFSDK_Environment* pEnv = m_pDocument->GetEnv();
-      CFFL_IFormFiller* pIFormFiller = pEnv->GetIFormFiller();
+      CFFL_InteractiveFormFiller* pInteractiveFormFiller =

[Tom Sepez, 2016/09/21 18:15:30]

nit: if you wanted to save space, you could call the local |pFormFiller|, since
it follows that an interactive form filler is some sort of form filler.

[dsinclair, 2016/09/21 18:34:01]

Done.

+          pEnv->GetInteractiveFormFiller();
       UnderlyingPageType* pPage = pWidget->GetUnderlyingPage();
       CPDFSDK_PageView* pPageView = m_pDocument->GetPageView(pPage, false);
-      FX_RECT rcBBox = pIFormFiller->GetViewBBox(pPageView, pWidget);
+      FX_RECT rcBBox = pInteractiveFormFiller->GetViewBBox(pPageView, pWidget);
 
       pEnv->Invalidate(pPage, rcBBox.left, rcBBox.top, rcBBox.right,
                        rcBBox.bottom);