Fix modules_unittests on iOS.

webrtc/test/testsupport/fileutils.cc

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 27 matching lines @@
 #include <memory>
 
 #include "webrtc/typedefs.h"  // For architecture defines
 
 namespace webrtc {
 namespace test {
 
 #if defined(WEBRTC_IOS)
 // Defined in iosfileutils.mm.  No header file to discourage use elsewhere.
 std::string IOSOutputPath();
+std::string IOSRootPath();
 std::string IOSResourcePath(std::string name, std::string extension);
 #endif
 
 namespace {
 
 #ifdef WIN32
 const char* kPathDelimiter = "\\";
 #else
 const char* kPathDelimiter = "/";
 #endif
@@ skipping 54 matching lines @@
   return kRootDirName;
 }
 
 std::string WorkingDir() {
   return kRootDirName;
 }
 
 #else // WEBRTC_ANDROID
 
 std::string ProjectRootPath() {
+#if defined(WEBRTC_IOS)
+  return IOSRootPath();
+#else
   std::string path = WorkingDir();
   if (path == kFallbackPath) {
     return kCannotFindProjectRootDir;
   }
   if (relative_dir_path_set && strcmp(relative_dir_path, ".") != 0) {
     path = path + kPathDelimiter + relative_dir_path;
   }
   // Remove two directory levels from the path, i.e. a path like
   // /absolute/path/src/out/Debug will become /absolute/path/src/
   size_t path_delimiter_index = path.find_last_of(kPathDelimiter);
   if (path_delimiter_index != std::string::npos) {
     // Move up one directory in the directory tree.
     path = path.substr(0, path_delimiter_index);
     path_delimiter_index = path.find_last_of(kPathDelimiter);
     if (path_delimiter_index != std::string::npos) {
       // Move up another directory in the directory tree. We should now be at
       // the project root.
       return path.substr(0, path_delimiter_index) + kPathDelimiter;
     }
   }
   fprintf(stderr, "Cannot find project root directory!\n");
   return kCannotFindProjectRootDir;
+#endif
 }
 
 std::string OutputPath() {
 #if defined(WEBRTC_IOS)
   return IOSOutputPath();
 #else
   std::string path = ProjectRootPath();
   if (path == kCannotFindProjectRootDir) {
     return kFallbackPath;
   }
@@ skipping 116 matching lines @@
     if (fseek(f, 0, SEEK_END) == 0) {
       size = ftell(f);
     }
     fclose(f);
   }
   return size;
 }
 
 }  // namespace test
 }  // namespace webrtc