Make rewriter::inserttext return a bool to indicate if it failed.

Add a RewriteTest::ReplaceStmt method to factor the 'checking for
rewrite failed + emitting diagnostic if so' code.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@46619 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/clang.xcodeproj/project.pbxproj b/clang.xcodeproj/project.pbxproj
index f8b31b6..7e2c357 100644
--- a/clang.xcodeproj/project.pbxproj
+++ b/clang.xcodeproj/project.pbxproj
@@ -576,9 +576,9 @@
 				DE928B7C0C0A615100231DA4 /* CodeGenModule.h */,
 				DE928B7E0C0A615600231DA4 /* CodeGenModule.cpp */,
 				DEEBC3BB0C2363BC00A9FE82 /* CodeGenTypes.cpp */,
+				DEEBC3B90C2363B800A9FE82 /* CodeGenTypes.h */,
 				1ABC36930C7A4BDC006DB0AB /* CGBuiltin.cpp */,
 				DE4264FB0C113592005A861D /* CGDecl.cpp */,
-				DEEBC3B90C2363B800A9FE82 /* CodeGenTypes.h */,
 				DE4772FB0C10EAEC002239E8 /* CGExpr.cpp */,
 				DEF2EFF20C6CDD74000C4259 /* CGExprAgg.cpp */,
 				DE224FF70C7AA98800D370A5 /* CGExprComplex.cpp */,