Remove CXFA_LayoutProcessor::GetRootLayoutItem().

It is not called. The view layout processor is called directly
as needed.

Change-Id: Id27489db3e7a9e2c534f8e404f7e6bfec645ce84
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/64590
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>

xfa/fxfa/layout/cxfa_layoutprocessor.cpp

diff --git a/xfa/fxfa/layout/cxfa_layoutprocessor.cpp b/xfa/fxfa/layout/cxfa_layoutprocessor.cpp
index e84c262..bb38fbe 100644
--- a/xfa/fxfa/layout/cxfa_layoutprocessor.cpp
+++ b/xfa/fxfa/layout/cxfa_layoutprocessor.cpp
@@ -128,11 +128,6 @@
     m_rgChangedContainers.push_back(pContainer);
 }
 
-CXFA_ViewLayoutItem* CXFA_LayoutProcessor::GetRootLayoutItem() const {
-  return m_pViewLayoutProcessor ? m_pViewLayoutProcessor->GetRootLayoutItem()
-                                : nullptr;
-}
-
 bool CXFA_LayoutProcessor::NeedLayout() const {
   return m_bNeedLayout || !m_rgChangedContainers.empty();
 }

xfa/fxfa/layout/cxfa_layoutprocessor.h

diff --git a/xfa/fxfa/layout/cxfa_layoutprocessor.h b/xfa/fxfa/layout/cxfa_layoutprocessor.h
index fab6746..18dc208 100644
--- a/xfa/fxfa/layout/cxfa_layoutprocessor.h
+++ b/xfa/fxfa/layout/cxfa_layoutprocessor.h
@@ -37,7 +37,6 @@
   int32_t CountPages() const;
   CXFA_ViewLayoutItem* GetPage(int32_t index) const;
   CXFA_LayoutItem* GetLayoutItem(CXFA_Node* pFormItem);
-  CXFA_ViewLayoutItem* GetRootLayoutItem() const;
   CXFA_ContentLayoutProcessor* GetRootContentLayoutProcessor() const {
     return m_pContentLayoutProcessor.get();
   }