[analyzer][NFC] Refactoring BugReporter.cpp P3.: std::shared_pointer<PathDiagnosticPiece> -> PathDiagnosticPieceRef

find clang/ -type f -exec sed -i 's/std::shared_ptr<PathDiagnosticPiece>/PathDiagnosticPieceRef/g' {} \;
git diff -U3 --no-color HEAD^ | clang-format-diff-6.0 -p1 -i

Just as C++ is meant to be refactored, right?

Differential Revision: https://reviews.llvm.org/D65381

llvm-svn: 368717
diff --git a/clang/lib/StaticAnalyzer/Checkers/DeleteWithNonVirtualDtorChecker.cpp b/clang/lib/StaticAnalyzer/Checkers/DeleteWithNonVirtualDtorChecker.cpp
index 8bf77c1..2059ff6 100644
--- a/clang/lib/StaticAnalyzer/Checkers/DeleteWithNonVirtualDtorChecker.cpp
+++ b/clang/lib/StaticAnalyzer/Checkers/DeleteWithNonVirtualDtorChecker.cpp
@@ -45,9 +45,9 @@
       static int X = 0;
       ID.AddPointer(&X);
     }
-    std::shared_ptr<PathDiagnosticPiece> VisitNode(const ExplodedNode *N,
-                                                   BugReporterContext &BRC,
-                                                   BugReport &BR) override;
+    PathDiagnosticPieceRef VisitNode(const ExplodedNode *N,
+                                     BugReporterContext &BRC,
+                                     BugReport &BR) override;
 
   private:
     bool Satisfied;
@@ -100,10 +100,9 @@
   C.emitReport(std::move(R));
 }
 
-std::shared_ptr<PathDiagnosticPiece>
+PathDiagnosticPieceRef
 DeleteWithNonVirtualDtorChecker::DeleteBugVisitor::VisitNode(
-    const ExplodedNode *N, BugReporterContext &BRC,
-    BugReport &BR) {
+    const ExplodedNode *N, BugReporterContext &BRC, BugReport &BR) {
   // Stop traversal after the first conversion was found on a path.
   if (Satisfied)
     return nullptr;