Remove unnecessary ToArray() calls and locals in CPDF_Dest.

Rename GetObject() to GetArray() and remove more ToArray() calls.

Change-Id: I754ca72b32c085e1801d3cedcd291ce4d2682359
Reviewed-on: https://pdfium-review.googlesource.com/41353
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
diff --git a/fpdfsdk/fpdf_doc.cpp b/fpdfsdk/fpdf_doc.cpp
index 1f0d4f2..d3c8e23 100644
--- a/fpdfsdk/fpdf_doc.cpp
+++ b/fpdfsdk/fpdf_doc.cpp
@@ -121,14 +121,14 @@
     return nullptr;
   CPDF_Bookmark bookmark(CPDFDictionaryFromFPDFBookmark(pDict));
   CPDF_Dest dest = bookmark.GetDest(pDoc);
-  if (dest.GetObject())
-    return FPDFDestFromCPDFArray(dest.GetObject());
+  if (dest.GetArray())
+    return FPDFDestFromCPDFArray(dest.GetArray());
   // If this bookmark is not directly associated with a dest, we try to get
   // action
   CPDF_Action action = bookmark.GetAction();
   if (!action.GetDict())
     return nullptr;
-  return FPDFDestFromCPDFArray(action.GetDest(pDoc).GetObject());
+  return FPDFDestFromCPDFArray(action.GetDest(pDoc).GetArray());
 }
 
 FPDF_EXPORT FPDF_ACTION FPDF_CALLCONV
@@ -167,7 +167,7 @@
   if (!pDoc)
     return nullptr;
   CPDF_Action action(CPDFDictionaryFromFPDFAction(pDict));
-  return FPDFDestFromCPDFArray(action.GetDest(pDoc).GetObject());
+  return FPDFDestFromCPDFArray(action.GetDest(pDoc).GetArray());
 }
 
 FPDF_EXPORT unsigned long FPDF_CALLCONV
@@ -302,14 +302,14 @@
   if (!pDoc)
     return nullptr;
   CPDF_Link link(CPDFDictionaryFromFPDFLink(pDict));
-  FPDF_DEST dest = FPDFDestFromCPDFArray(link.GetDest(pDoc).GetObject());
+  FPDF_DEST dest = FPDFDestFromCPDFArray(link.GetDest(pDoc).GetArray());
   if (dest)
     return dest;
   // If this link is not directly associated with a dest, we try to get action
   CPDF_Action action = link.GetAction();
   if (!action.GetDict())
     return nullptr;
-  return FPDFDestFromCPDFArray(action.GetDest(pDoc).GetObject());
+  return FPDFDestFromCPDFArray(action.GetDest(pDoc).GetArray());
 }
 
 FPDF_EXPORT FPDF_ACTION FPDF_CALLCONV FPDFLink_GetAction(FPDF_LINK pDict) {