third_party/protobuf: Update to HEAD (f52e188fe4)

third_party/protobuf/php/src/Google/Protobuf/Internal/GPBType.php

Index: third_party/protobuf/php/src/Google/Protobuf/Internal/GPBType.php
diff --git a/third_party/protobuf/src/google/protobuf/util/internal/testdata/struct.proto b/third_party/protobuf/php/src/Google/Protobuf/Internal/GPBType.php
similarity index 76%
copy from third_party/protobuf/src/google/protobuf/util/internal/testdata/struct.proto
copy to third_party/protobuf/php/src/Google/Protobuf/Internal/GPBType.php
index c15aba0d6d9881b8963a0353cdd1e0aa0b4adc11..fa849ceb0639f8f74f394acd46d095480495f2e8 100644
--- a/third_party/protobuf/src/google/protobuf/util/internal/testdata/struct.proto
+++ b/third_party/protobuf/php/src/Google/Protobuf/Internal/GPBType.php
@@ -1,3 +1,5 @@
+<?php
+
 // Protocol Buffers - Google's data interchange format
 // Copyright 2008 Google Inc.  All rights reserved.
 // https://developers.google.com/protocol-buffers/
@@ -28,18 +30,26 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Proto to test proto3 struct.
-syntax = "proto3";
-
-package google.protobuf.testing.structs;
-option java_package = "com.google.protobuf.testing.structs";
-
-import "google/protobuf/struct.proto";
-
-message StructType {
-  google.protobuf.Struct object = 1;
-}
+namespace Google\Protobuf\Internal;
 
-service TestService {
-  rpc Call(StructType) returns (StructType);
+class GPBType
+{
+    const DOUBLE   =  1;
+    const FLOAT    =  2;
+    const INT64    =  3;
+    const UINT64   =  4;
+    const INT32    =  5;
+    const FIXED64  =  6;
+    const FIXED32  =  7;
+    const BOOL     =  8;
+    const STRING   =  9;
+    const GROUP    = 10;
+    const MESSAGE  = 11;
+    const BYTES    = 12;
+    const UINT32   = 13;
+    const ENUM     = 14;
+    const SFIXED32 = 15;
+    const SFIXED64 = 16;
+    const SINT32   = 17;
+    const SINT64   = 18;
 }