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

third_party/protobuf/objectivec/google/protobuf/SourceContext.pbobjc.h

Index: third_party/protobuf/objectivec/google/protobuf/SourceContext.pbobjc.h
diff --git a/third_party/protobuf/objectivec/google/protobuf/SourceContext.pbobjc.h b/third_party/protobuf/objectivec/google/protobuf/SourceContext.pbobjc.h
deleted file mode 100644
index 6bc57149219deb1a462dbbe523130eaa13a9780e..0000000000000000000000000000000000000000
--- a/third_party/protobuf/objectivec/google/protobuf/SourceContext.pbobjc.h
+++ /dev/null
@@ -1,47 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: google/protobuf/source_context.proto
-
-#import "GPBProtocolBuffers.h"
-
-#if GOOGLE_PROTOBUF_OBJC_GEN_VERSION != 30000
-#error This file was generated by a different version of protoc-gen-objc which is incompatible with your Protocol Buffer sources.
-#endif
-
-// @@protoc_insertion_point(imports)
-
-CF_EXTERN_C_BEGIN
-
-NS_ASSUME_NONNULL_BEGIN
-
-#pragma mark - GPBSourceContextRoot
-
-@interface GPBSourceContextRoot : GPBRootObject
-
-// The base class provides:
-//   + (GPBExtensionRegistry *)extensionRegistry;
-// which is an GPBExtensionRegistry that includes all the extensions defined by
-// this file and all files that it depends on.
-
-@end
-
-#pragma mark - GPBSourceContext
-
-typedef GPB_ENUM(GPBSourceContext_FieldNumber) {
-  GPBSourceContext_FieldNumber_FileName = 1,
-};
-
-// `SourceContext` represents information about the source of a
-// protobuf element, like the file in which it is defined.
-@interface GPBSourceContext : GPBMessage
-
-// The path-qualified name of the .proto file that contained the associated
-// protobuf element.  For example: `"google/protobuf/source.proto"`.
-@property(nonatomic, readwrite, copy, null_resettable) NSString *fileName;
-
-@end
-
-NS_ASSUME_NONNULL_END
-
-CF_EXTERN_C_END
-
-// @@protoc_insertion_point(global_scope)