Update //third_party/protobuf to version 3.

third_party/protobuf/src/google/protobuf/testing/googletest.cc

 // Protocol Buffers - Google's data interchange format
 // Copyright 2008 Google Inc.  All rights reserved.
-// http://code.google.com/p/protobuf/
+// 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.
 //     * Redistributions in binary form must reproduce the above
 // copyright notice, this list of conditions and the following disclaimer
 // in the documentation and/or other materials provided with the
@@ skipping 44 matching lines @@
 
 #ifndef O_BINARY
 #ifdef _O_BINARY
 #define O_BINARY _O_BINARY
 #else
 #define O_BINARY 0     // If this isn't defined, the platform doesn't need it.
 #endif
 #endif
 
 string TestSourceDir() {
-#ifdef _MSC_VER
+#ifndef GOOGLE_THIRD_PARTY_PROTOBUF
+#ifndef _MSC_VER
+  // automake sets the "srcdir" environment variable.
+  char* result = getenv("srcdir");
+  if (result != NULL) {
+    return result;
+  }
+#endif  // _MSC_VER
+
   // Look for the "src" directory.
   string prefix = ".";
 
   while (!File::Exists(prefix + "/src/google/protobuf")) {
     if (!File::Exists(prefix)) {
       GOOGLE_LOG(FATAL)
         << "Could not find protobuf source code.  Please run tests from "
            "somewhere within the protobuf source package.";
     }
     prefix += "/..";
   }
   return prefix + "/src";
 #else
-  // automake sets the "srcdir" environment variable.
-  char* result = getenv("srcdir");
-  if (result == NULL) {
-    // Otherwise, the test must be run from the source directory.
-    return ".";
-  } else {
-    return result;
-  }
-#endif
+  return "third_party/protobuf/src";
+#endif  // GOOGLE_THIRD_PARTY_PROTOBUF
 }
 
 namespace {
 
 string GetTemporaryDirectoryName() {
+  // Tests run under Bazel "should not" use /tmp. Bazel sets this environment
+  // variable for tests to use instead.
+  char *from_environment = getenv("TEST_TMPDIR");
+  if (from_environment != NULL && from_environment[0] != '\0') {
+    return string(from_environment) + "/protobuf_tmpdir";
+  }
+
   // tmpnam() is generally not considered safe but we're only using it for
   // testing.  We cannot use tmpfile() or mkstemp() since we're creating a
   // directory.
   char b[L_tmpnam + 1];     // HPUX multithread return 0 if s is 0
   string result = tmpnam(b);
 #ifdef _WIN32
   // On Win32, tmpnam() returns a file prefixed with '\', but which is supposed
   // to be used in the current working directory.  WTF?
   if (HasPrefixString(result, "\\")) {
     result.erase(0, 1);
   }
+  // The Win32 API accepts forward slashes as a path delimiter even though
+  // backslashes are standard.  Let's avoid confusion and use only forward
+  // slashes.
+  result = StringReplace(result, "\\", "/", true);
 #endif  // _WIN32
   return result;
 }
 
 // Creates a temporary directory on demand and deletes it when the process
 // quits.
 class TempDirDeleter {
  public:
   TempDirDeleter() {}
   ~TempDirDeleter() {
@@ skipping 129 matching lines @@
 struct ForceShutdown {
   ~ForceShutdown() {
     ShutdownProtobufLibrary();
   }
 } force_shutdown;
 
 }  // namespace
 
 }  // namespace protobuf
 }  // namespace google