Fix build break

src/Compilers/CSharp/Test/Symbol/Symbols/SymbolErrorTests.cs

@@ -19213,7 +19213,7 @@ public void CS0746ERR_InvalidAnonymousTypeMemberDeclarator_4()
     public static int f1<T>() { return 1; }
 }
 ";
-            CreateCompilationWithMscorlib(text).VerifyDiagnostics(
+            CreateStandardCompilation(text).VerifyDiagnostics(
                 // (3,22): error CS0746: Invalid anonymous type member declarator. Anonymous type members must be declared with a member assignment, simple name or member access.
                 //     object F = new { f1<int> };
                 Diagnostic(ErrorCode.ERR_InvalidAnonymousTypeMemberDeclarator, "f1<int>").WithLocation(3, 22),

src/Compilers/CSharp/Test/Syntax/Parsing/DeclarationParsingTests.cs

@@ -5397,11 +5397,11 @@ class C
    void M(__arglist, int j)  {}
 }";
 
-            CreateCompilationWithMscorlib(text1).VerifyDiagnostics(
+            CreateStandardCompilation(text1).VerifyDiagnostics(
                 // (4,11): error CS0231: A params parameter must be the last parameter in a formal parameter list
                 //    void M(params int[] i, int j)  {}
                 Diagnostic(ErrorCode.ERR_ParamsLast, "params int[] i").WithLocation(4, 11));
-            CreateCompilationWithMscorlib(text2).VerifyDiagnostics(
+            CreateStandardCompilation(text2).VerifyDiagnostics(
                 // (4,11): error CS0257: An __arglist parameter must be the last parameter in a formal parameter list
                 //    void M(__arglist, int j)  {}
                 Diagnostic(ErrorCode.ERR_VarargsLast, "__arglist").WithLocation(4, 11));

src/Compilers/CSharp/Test/Syntax/Parsing/ParserErrorMessageTests.cs

@@ -343,7 +343,7 @@ public void Bar(__arglist,  int b)
 }
 ";
 
-            CreateCompilationWithMscorlib(test).VerifyDiagnostics(
+            CreateStandardCompilation(test).VerifyDiagnostics(
                 // (4,19): error CS0257: An __arglist parameter must be the last parameter in a formal parameter list
                 //   public void Bar(__arglist,  int b)
                 Diagnostic(ErrorCode.ERR_VarargsLast, "__arglist"));
@@ -937,7 +937,7 @@ public static int Main()
 }
 ";
 
-            CreateCompilationWithMscorlib(test).VerifyDiagnostics(
+            CreateStandardCompilation(test).VerifyDiagnostics(
                 // (7,23): error CS0746: Invalid anonymous type member declarator. Anonymous type members must be declared with a member assignment, simple name or member access.
                 //         var t = new { a.b = 1 };
                 Diagnostic(ErrorCode.ERR_InvalidAnonymousTypeMemberDeclarator, "a.b = 1").WithLocation(7, 23),
@@ -962,7 +962,7 @@ public static void Main()
     }
 }
 ";
-            CreateCompilationWithMscorlib(test).VerifyDiagnostics(
+            CreateStandardCompilation(test).VerifyDiagnostics(
                 // (7,23): error CS0746: Invalid anonymous type member declarator. Anonymous type members must be declared with a member assignment, simple name or member access.
                 //         var t = new { s.Length = 1 };
                 Diagnostic(ErrorCode.ERR_InvalidAnonymousTypeMemberDeclarator, "s.Length = 1").WithLocation(7, 23),
@@ -984,7 +984,7 @@ public static void Main()
     }
 }
 ";
-            CreateCompilationWithMscorlib(test).VerifyDiagnostics(
+            CreateStandardCompilation(test).VerifyDiagnostics(
                 // (7,23): error CS0746: Invalid anonymous type member declarator. Anonymous type members must be declared with a member assignment, simple name or member access.
                 //         var t = new { s.ToString() = 1 };
                 Diagnostic(ErrorCode.ERR_InvalidAnonymousTypeMemberDeclarator, "s.ToString() = 1").WithLocation(7, 23),
@@ -3802,7 +3802,7 @@ public class MyClass {
 }
 ";
 
-            CreateCompilationWithMscorlib(test).VerifyDiagnostics(
+            CreateStandardCompilation(test).VerifyDiagnostics(
                 // (4,14): error CS1551: Indexers must have at least one parameter
                 //     int this[] {
                 Diagnostic(ErrorCode.ERR_IndexerNeedsParam, "]").WithLocation(4, 14));

src/Compilers/CSharp/Test/Syntax/Parsing/ParsingErrorRecoveryTests.cs

@@ -1875,7 +1875,7 @@ public void TestEndBraceAfterIndexerParameterStart()
             Assert.Equal((int)ErrorCode.ERR_LbraceExpected, file.Errors()[1].Code);
             Assert.Equal((int)ErrorCode.ERR_RbraceExpected, file.Errors()[2].Code);
 
-            CreateCompilationWithMscorlib(text).VerifyDiagnostics(
+            CreateStandardCompilation(text).VerifyDiagnostics(
                 // (1,21): error CS1003: Syntax error, ']' expected
                 // class c { int this[ }
                 Diagnostic(ErrorCode.ERR_SyntaxError, "}").WithArguments("]", "}").WithLocation(1, 21),
@@ -1987,7 +1987,7 @@ public void TestGarbageAfterIndexerParameterStart()
             Assert.Equal(1, file.Errors().Length);
             Assert.Equal((int)ErrorCode.ERR_UnexpectedCharacter, file.Errors()[0].Code);
 
-            CreateCompilationWithMscorlib(text).VerifyDiagnostics(
+            CreateStandardCompilation(text).VerifyDiagnostics(
                 // (1,21): error CS1056: Unexpected character '$'
                 // class c { int this[ $ ] { } }
                 Diagnostic(ErrorCode.ERR_UnexpectedCharacter, "").WithArguments("$").WithLocation(1, 21),
@@ -2072,7 +2072,7 @@ public void TestMethodAfterIndexerParameterStart()
             Assert.Equal((int)ErrorCode.ERR_LbraceExpected, file.Errors()[1].Code);
             Assert.Equal((int)ErrorCode.ERR_RbraceExpected, file.Errors()[2].Code);
 
-            CreateCompilationWithMscorlib(text).VerifyDiagnostics(
+            CreateStandardCompilation(text).VerifyDiagnostics(
                 // (1,21): error CS1003: Syntax error, ']' expected
                 // class c { int this[ public void m() { } }
                 Diagnostic(ErrorCode.ERR_SyntaxError, "public").WithArguments("]", "public").WithLocation(1, 21),
@@ -6734,7 +6734,7 @@ public void ColonColonInExplicitInterfaceMember()
                 // _ _::this
                 Diagnostic(ErrorCode.ERR_RbraceExpected, ""));
 
-            CreateCompilationWithMscorlib(text).VerifyDiagnostics(
+            CreateStandardCompilation(text).VerifyDiagnostics(
                 // (2,4): error CS1003: Syntax error, '.' expected
                 // _ _::this
                 Diagnostic(ErrorCode.ERR_SyntaxError, "::").WithArguments(".", "::").WithLocation(2, 4),

src/Compilers/CSharp/Test/Syntax/Parsing/ScriptParsingTests.cs

@@ -1574,7 +1574,7 @@ public void Error_IndexerDefinition()
                 new ErrorDescription { Code = 1514, Line = 1, Column = 17 },
                 new ErrorDescription { Code = 1513, Line = 1, Column = 17 });
 
-            CreateCompilationWithMscorlib(test).VerifyDiagnostics(
+            CreateStandardCompilation(test).VerifyDiagnostics(
                 // (1,13): error CS1003: Syntax error, '[' expected
                 // string this ="";
                 Diagnostic(ErrorCode.ERR_SyntaxError, "=").WithArguments("[", "=").WithLocation(1, 13),