Remove unused Icon::m_pIconStream

It is set, and passed around, but never operated upon.  This
removes another unowned ptr from JS back to C++ objects.

Change-Id: I2a7eede050c6d844924e3c74395e7672ebb0213e
Reviewed-on: https://pdfium-review.googlesource.com/2829
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
diff --git a/fpdfsdk/javascript/Icon.cpp b/fpdfsdk/javascript/Icon.cpp
index 72d91fa..fa2f92f 100644
--- a/fpdfsdk/javascript/Icon.cpp
+++ b/fpdfsdk/javascript/Icon.cpp
@@ -21,27 +21,10 @@
 IMPLEMENT_JS_CLASS(CJS_Icon, Icon)
 
 Icon::Icon(CJS_Object* pJSObject)
-    : CJS_EmbedObj(pJSObject), m_pIconStream(nullptr), m_swIconName(L"") {}
+    : CJS_EmbedObj(pJSObject), m_swIconName(L"") {}
 
 Icon::~Icon() {}
 
-void Icon::SetStream(CPDF_Stream* pIconStream) {
-  if (pIconStream)
-    m_pIconStream = pIconStream;
-}
-
-CPDF_Stream* Icon::GetStream() {
-  return m_pIconStream;
-}
-
-void Icon::SetIconName(CFX_WideString name) {
-  m_swIconName = name;
-}
-
-CFX_WideString Icon::GetIconName() {
-  return m_swIconName;
-}
-
 bool Icon::name(CJS_Runtime* pRuntime,
                 CJS_PropValue& vp,
                 CFX_WideString& sError) {