Rename IFWL classes which do not have CFWL equivalents

xfa/fwl/core/cfwl_formproxy.cpp

Index: xfa/fwl/core/cfwl_formproxy.cpp
diff --git a/xfa/fwl/core/ifwl_formproxy.cpp b/xfa/fwl/core/cfwl_formproxy.cpp
similarity index 60%
rename from xfa/fwl/core/ifwl_formproxy.cpp
rename to xfa/fwl/core/cfwl_formproxy.cpp
index 521e056c75392fd04e5c29ebffba6da536b6edb6..ef325c4fddc2b6c0a62ffca122cb7e0ac51a3446 100644
--- a/xfa/fwl/core/ifwl_formproxy.cpp
+++ b/xfa/fwl/core/cfwl_formproxy.cpp
@@ -4,7 +4,7 @@
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
-#include "xfa/fwl/core/ifwl_formproxy.h"
+#include "xfa/fwl/core/cfwl_formproxy.h"
 
 #include <memory>
 #include <utility>
@@ -12,29 +12,29 @@
 #include "third_party/base/ptr_util.h"
 #include "xfa/fwl/core/cfwl_notedriver.h"
 
-IFWL_FormProxy::IFWL_FormProxy(
+CFWL_FormProxy::CFWL_FormProxy(
     const CFWL_App* app,
     std::unique_ptr<CFWL_WidgetProperties> properties,
     IFWL_Widget* pOuter)
-    : IFWL_Form(app, std::move(properties), pOuter) {}
+    : CFWL_Form(app, std::move(properties), pOuter) {}
 
-IFWL_FormProxy::~IFWL_FormProxy() {}
+CFWL_FormProxy::~CFWL_FormProxy() {}
 
-FWL_Type IFWL_FormProxy::GetClassID() const {
+FWL_Type CFWL_FormProxy::GetClassID() const {
   return FWL_Type::FormProxy;
 }
 
-bool IFWL_FormProxy::IsInstance(const CFX_WideStringC& wsClass) const {
+bool CFWL_FormProxy::IsInstance(const CFX_WideStringC& wsClass) const {
   if (wsClass == CFX_WideStringC(FWL_CLASS_FormProxy))
     return true;
-  return IFWL_Form::IsInstance(wsClass);
+  return CFWL_Form::IsInstance(wsClass);
 }
 
-void IFWL_FormProxy::Update() {}
+void CFWL_FormProxy::Update() {}
 
-void IFWL_FormProxy::DrawWidget(CFX_Graphics* pGraphics,
+void CFWL_FormProxy::DrawWidget(CFX_Graphics* pGraphics,
                                 const CFX_Matrix* pMatrix) {}
 
-void IFWL_FormProxy::OnProcessMessage(CFWL_Message* pMessage) {
+void CFWL_FormProxy::OnProcessMessage(CFWL_Message* pMessage) {
   m_pOuter->GetDelegate()->OnProcessMessage(pMessage);
 }