Make tool_output_file's raw_ostream instance a member variable instead
of a base class.

This makes it possible to unregister the file from FilesToRemove when
the file is done. Also, this eliminates the need for
formatted_tool_output_file.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112706 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-as/llvm-as.cpp b/tools/llvm-as/llvm-as.cpp
index 516cec2..1eaa4b3 100644
--- a/tools/llvm-as/llvm-as.cpp
+++ b/tools/llvm-as/llvm-as.cpp
@@ -77,8 +77,8 @@
     exit(1);
   }
 
-  if (Force || !CheckBitcodeOutputToConsole(*Out, true))
-    WriteBitcodeToFile(M, *Out);
+  if (Force || !CheckBitcodeOutputToConsole(Out->os(), true))
+    WriteBitcodeToFile(M, Out->os());
 
   // Declare success.
   Out->keep();