iOS gtest launcher: retry tests in one big batch

base/test/launcher/unit_test_launcher.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BASE_TEST_LAUNCHER_UNIT_TEST_LAUNCHER_H_
 #define BASE_TEST_LAUNCHER_UNIT_TEST_LAUNCHER_H_
 
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/test/launcher/test_launcher.h"
@@ skipping 37 matching lines @@
   // of current process. |test_names| is a vector of test full names
   // (e.g. "A.B"), |output_file| is path to the GTest XML output file.
   virtual CommandLine GetCommandLineForChildGTestProcess(
       const std::vector<std::string>& test_names,
       const base::FilePath& output_file) = 0;
 
   // Returns wrapper to use for child GTest process. Empty string means
   // no wrapper.
   virtual std::string GetWrapperForChildGTestProcess() = 0;
 
+  // Relaunch tests, e.g. after a crash.
+  virtual void RelaunchTests(TestLauncher* test_launcher,
+                             const std::vector<std::string>& test_names,
+                             int launch_flags) = 0;
+
  protected:
   ~UnitTestPlatformDelegate() {}
 };
 
 // Runs tests serially, each in its own process.
 void RunUnitTestsSerially(TestLauncher* test_launcher,
                           UnitTestPlatformDelegate* platform_delegate,
                           const std::vector<std::string>& test_names,
                           int launch_flags);
 
@@ skipping 30 matching lines @@
 
   // Determines whether we use job objects on Windows.
   bool use_job_objects_;
 
   DISALLOW_COPY_AND_ASSIGN(UnitTestLauncherDelegate);
 };
 
 }   // namespace base
 
 #endif  // BASE_TEST_LAUNCHER_UNIT_TEST_LAUNCHER_H_