Include pruning and general cleanup.

llvm-svn: 169095
diff --git a/clang/lib/StaticAnalyzer/Checkers/VirtualCallChecker.cpp b/clang/lib/StaticAnalyzer/Checkers/VirtualCallChecker.cpp
index bdc9627..bdbdc4a 100644
--- a/clang/lib/StaticAnalyzer/Checkers/VirtualCallChecker.cpp
+++ b/clang/lib/StaticAnalyzer/Checkers/VirtualCallChecker.cpp
@@ -20,6 +20,7 @@
 #include "clang/StaticAnalyzer/Core/Checker.h"
 #include "clang/StaticAnalyzer/Core/BugReporter/BugReporter.h"
 #include "llvm/ADT/SmallString.h"
+#include "llvm/Support/raw_ostream.h"
 
 using namespace clang;
 using namespace ento;