[Frontend] Remove HeaderSearchOptions::Entry::IsInternal, which is unused.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173866 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index 49f89d4..f49f30d 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -889,8 +889,7 @@
     frontend::IncludeDirGroup Group = frontend::System;
     if ((*I)->getOption().matches(OPT_internal_externc_isystem))
       Group = frontend::ExternCSystem;
-    Opts.AddPath((*I)->getValue(), Group, false, /*IgnoreSysRoot=*/true,
-                 /*IsInternal=*/true);
+    Opts.AddPath((*I)->getValue(), Group, false, true);
   }
 
   // Add the path prefixes which are implicitly treated as being system headers.
diff --git a/lib/Serialization/ASTReader.cpp b/lib/Serialization/ASTReader.cpp
index c07e1e9..ac86d41 100644
--- a/lib/Serialization/ASTReader.cpp
+++ b/lib/Serialization/ASTReader.cpp
@@ -3691,10 +3691,8 @@
       = static_cast<frontend::IncludeDirGroup>(Record[Idx++]);
     bool IsFramework = Record[Idx++];
     bool IgnoreSysRoot = Record[Idx++];
-    bool IsInternal = Record[Idx++];
     HSOpts.UserEntries.push_back(
-      HeaderSearchOptions::Entry(Path, Group, IsFramework, IgnoreSysRoot,
-                                 IsInternal));
+      HeaderSearchOptions::Entry(Path, Group, IsFramework, IgnoreSysRoot));
   }
 
   // System header prefixes.
diff --git a/lib/Serialization/ASTWriter.cpp b/lib/Serialization/ASTWriter.cpp
index 0499f5c..25e3d52 100644
--- a/lib/Serialization/ASTWriter.cpp
+++ b/lib/Serialization/ASTWriter.cpp
@@ -1114,7 +1114,6 @@
     Record.push_back(static_cast<unsigned>(Entry.Group));
     Record.push_back(Entry.IsFramework);
     Record.push_back(Entry.IgnoreSysRoot);
-    Record.push_back(Entry.IsInternal);
   }
 
   // System header prefixes.