Add constants for PDF 1.7 spec, table 3.4.

Add constants/stream_dict_common.h. The header lists all the constants
in the table in the same order. Constants that are not used at all are
commented out.

BUG=pdfium:1049

Change-Id: I6539090e0ad56319ea628883e388aeacef044e52
Reviewed-on: https://pdfium-review.googlesource.com/29090
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>

3 files changed, 11 insertions, 6 deletions

diff --git a/core/fpdfdoc/cpdf_action.cpp b/core/fpdfdoc/cpdf_action.cpp
index 383f328b9f..4ac86fe104 100644
--- a/core/fpdfdoc/cpdf_action.cpp
+++ b/core/fpdfdoc/cpdf_action.cpp
@@ -6,6 +6,7 @@
 
 #include "core/fpdfdoc/cpdf_action.h"
 
+#include "constants/stream_dict_common.h"
 #include "core/fpdfapi/parser/cpdf_array.h"
 #include "core/fpdfapi/parser/cpdf_document.h"
 #include "core/fpdfdoc/cpdf_filespec.h"
@@ -70,14 +71,15 @@ WideString CPDF_Action::GetFilePath() const {
     return WideString();
   }
 
-  CPDF_Object* pFile = m_pDict->GetDirectObjectFor("F");
+  CPDF_Object* pFile = m_pDict->GetDirectObjectFor(pdfium::stream::kF);
   if (pFile)
     return CPDF_FileSpec(pFile).GetFileName();
 
   if (type == "Launch") {
     CPDF_Dictionary* pWinDict = m_pDict->GetDictFor("Win");
     if (pWinDict) {
-      return WideString::FromLocal(pWinDict->GetStringFor("F").AsStringView());
+      return WideString::FromLocal(
+          pWinDict->GetStringFor(pdfium::stream::kF).AsStringView());
     }
   }
   return WideString();
diff --git a/core/fpdfdoc/cpdf_filespec.cpp b/core/fpdfdoc/cpdf_filespec.cpp
index 2f999bcf4e..e741ac61ce 100644
--- a/core/fpdfdoc/cpdf_filespec.cpp
+++ b/core/fpdfdoc/cpdf_filespec.cpp
@@ -8,6 +8,7 @@
 
 #include <vector>
 
+#include "constants/stream_dict_common.h"
 #include "core/fpdfapi/parser/cpdf_dictionary.h"
 #include "core/fpdfapi/parser/cpdf_name.h"
 #include "core/fpdfapi/parser/cpdf_object.h"
@@ -94,8 +95,8 @@ WideString CPDF_FileSpec::GetFileName() const {
   if (CPDF_Dictionary* pDict = m_pObj->AsDictionary()) {
     csFileName = pDict->GetUnicodeTextFor("UF");
     if (csFileName.IsEmpty()) {
-      csFileName =
-          WideString::FromLocal(pDict->GetStringFor("F").AsStringView());
+      csFileName = WideString::FromLocal(
+          pDict->GetStringFor(pdfium::stream::kF).AsStringView());
     }
     if (pDict->GetStringFor("FS") == "URL")
       return csFileName;
@@ -187,7 +188,8 @@ void CPDF_FileSpec::SetFileName(const WideString& wsFileName) {
   if (m_pObj->IsString()) {
     m_pObj->SetString(ByteString::FromUnicode(wsStr));
   } else if (CPDF_Dictionary* pDict = m_pObj->AsDictionary()) {
-    pDict->SetNewFor<CPDF_String>("F", ByteString::FromUnicode(wsStr), false);
+    pDict->SetNewFor<CPDF_String>(pdfium::stream::kF,
+                                  ByteString::FromUnicode(wsStr), false);
     pDict->SetNewFor<CPDF_String>("UF", PDF_EncodeText(wsStr), false);
   }
 }
diff --git a/core/fpdfdoc/cpdf_interform.cpp b/core/fpdfdoc/cpdf_interform.cpp
index 6c53c971d8..6bf72fd5ef 100644
--- a/core/fpdfdoc/cpdf_interform.cpp
+++ b/core/fpdfdoc/cpdf_interform.cpp
@@ -9,6 +9,7 @@
 #include <utility>
 #include <vector>
 
+#include "constants/stream_dict_common.h"
 #include "core/fpdfapi/font/cpdf_font.h"
 #include "core/fpdfapi/font/cpdf_fontencoding.h"
 #include "core/fpdfapi/page/cpdf_page.h"
@@ -1117,7 +1118,7 @@ std::unique_ptr<CFDF_Document> CPDF_InterForm::ExportToFDF(
     if (bSimpleFileSpec) {
       WideString wsFilePath = CPDF_FileSpec::EncodeFileName(pdf_path);
       pMainDict->SetNewFor<CPDF_String>(
-          "F", ByteString::FromUnicode(wsFilePath), false);
+          pdfium::stream::kF, ByteString::FromUnicode(wsFilePath), false);
       pMainDict->SetNewFor<CPDF_String>("UF", PDF_EncodeText(wsFilePath),
                                         false);
     } else {