Revert https://codereview.chromium.org/1291903002 (protobuf roll).

third_party/protobuf/csharp/protos/unittest_issues.proto

Index: third_party/protobuf/csharp/protos/unittest_issues.proto
diff --git a/third_party/protobuf/csharp/protos/unittest_issues.proto b/third_party/protobuf/csharp/protos/unittest_issues.proto
deleted file mode 100644
index 989b3dc426e9c678bef641b3251f9b125765f74a..0000000000000000000000000000000000000000
--- a/third_party/protobuf/csharp/protos/unittest_issues.proto
+++ /dev/null
@@ -1,119 +0,0 @@
-syntax = "proto3";
-
-// These proto descriptors have at one time been reported as an issue or defect.
-// They are kept here to replicate the issue, and continue to verify the fix.
-
-// Issue: Non-"Google.Protobuffers" namespace will ensure that protobuffer library types are qualified
-option csharp_namespace = "UnitTest.Issues.TestProtos";
-
-package unittest_issues;
-option optimize_for = SPEED;
-
-// Issue 307: when generating doubly-nested types, any references
-// should be of the form A.Types.B.Types.C.
-message Issue307 {
-  message NestedOnce {
-    message NestedTwice {
-    }
-  }
-}
-
-// Old issue 13: http://code.google.com/p/protobuf-csharp-port/issues/detail?id=13
-// New issue 309: https://github.com/google/protobuf/issues/309
- 
-// message A {
-//    optional int32 _A = 1;
-// }
-
-// message B {
-//    optional int32 B_ = 1;
-// }
-
-//message AB {
-//    optional int32 a_b = 1;
-//}
-
-// Similar issue with numeric names
-// Java code failed too, so probably best for this to be a restriction.
-// See https://github.com/google/protobuf/issues/308
-// message NumberField {
-//    optional int32 _01 = 1;
-// }
-
-// issue 19 - negative enum values
-
-enum NegativeEnum {
-    NEGATIVE_ENUM_ZERO = 0;
-    FiveBelow = -5;
-    MinusOne = -1;
-}
-
-message NegativeEnumMessage {
-    NegativeEnum value = 1;
-    repeated NegativeEnum values = 2 [packed = false];
-    repeated NegativeEnum packed_values = 3 [packed=true];
-}
-
-// Issue 21: http://code.google.com/p/protobuf-csharp-port/issues/detail?id=21
-// Decorate fields with [deprecated=true] as [System.Obsolete]
-
-message DeprecatedChild {
-}
-
-enum DeprecatedEnum {
-    DEPRECATED_ZERO = 0;
-    one = 1;
-}
-
-message DeprecatedFieldsMessage {
-    int32 PrimitiveValue = 1 [deprecated = true];
-    repeated int32 PrimitiveArray = 2 [deprecated = true];
-
-    DeprecatedChild MessageValue = 3 [deprecated = true];
-    repeated DeprecatedChild MessageArray = 4 [deprecated = true];
-
-    DeprecatedEnum EnumValue = 5 [deprecated = true];
-    repeated DeprecatedEnum EnumArray = 6 [deprecated = true];
-}
-
-// Issue 45: http://code.google.com/p/protobuf-csharp-port/issues/detail?id=45
-message ItemField {
-  int32 item = 1;
-}
-
-message ReservedNames {
-  // Force a nested type called Types
-  message SomeNestedType {
-  }
-
-  int32 types = 1;
-  int32 descriptor = 2;
-}
-
-message TestJsonFieldOrdering {
-  // These fields are deliberately not declared in numeric
-  // order, and the oneof fields aren't contiguous either.
-  // This allows for reasonably robust tests of JSON output
-  // ordering.
-  // TestFieldOrderings in unittest_proto3.proto is similar,
-  // but doesn't include oneofs.
-  // TODO: Consider adding oneofs to TestFieldOrderings, although
-  // that will require fixing other tests in multiple platforms.
-  // Alternatively, consider just adding this to
-  // unittest_proto3.proto if multiple platforms want it.
-  
-  int32 plain_int32 = 4;
-
-  oneof o1 {
-    string o1_string = 2;
-    int32 o1_int32 = 5;
-  }
-  
-  string plain_string = 1;
-  
-  oneof o2 {
-    int32 o2_int32 = 6;
-    string o2_string = 3;
-  }
-  
-}