third_party/protobuf: Update to HEAD (f52e188fe4)

third_party/protobuf/conformance/conformance_objc.m

 // Protocol Buffers - Google's data interchange format
 // Copyright 2015 Google Inc.  All rights reserved.
 // https://developers.google.com/protocol-buffers/
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
@@ skipping 13 matching lines @@
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #import <Foundation/Foundation.h>
 
 #import "Conformance.pbobjc.h"
+#import "google/protobuf/TestMessagesProto3.pbobjc.h"
 
 static void Die(NSString *format, ...) __dead2;
 
 static BOOL verbose = NO;
 static int32_t testCount = 0;
 
 static void Die(NSString *format, ...) {
   va_list args;
   va_start(args, format);
   NSString *msg = [[NSString alloc] initWithFormat:format arguments:args];
@@ skipping 126 matching lines @@
     while (notDone) {
       @autoreleasepool {
         notDone = DoTestIo(input, output);
       }
     }
 
     NSLog(@"Received EOF from test runner after %d tests, exiting.", testCount);
   }
   return 0;
 }