4 files changed, 14 insertions, 0 deletions
diff --git a/base/test/test_launcher.cc b/base/test/test_launcher.cc
index 462f4d4..b58a608 100644
--- a/base/test/test_launcher.cc
+++ b/base/test/test_launcher.cc
@@ -546,6 +546,8 @@ void RunTestIteration(TestLauncherDelegate* launcher_delegate,
   // Special value "-1" means "repeat indefinitely".
   int new_cycles = (cycles == -1) ? cycles : cycles - 1;
 
+  launcher_delegate->OnTestIterationStarting();
+
   MessageLoop::current()->PostTask(
       FROM_HERE,
       Bind(&RunTests, launcher_delegate, total_shards, shard_index,
diff --git a/base/test/test_launcher.h b/base/test/test_launcher.h
index 0e8faea..bf4e9c0 100644
--- a/base/test/test_launcher.h
+++ b/base/test/test_launcher.h
@@ -69,6 +69,9 @@ struct TestResult {
 // which tests and how are run.
 class TestLauncherDelegate {
  public:
+  // Called at the start of each test iteration.
+  virtual void OnTestIterationStarting() = 0;
+
   // Called to get a test name for filtering purposes. Usually it's
   // test case's name and test's name joined by a dot (e.g.
   // "TestCaseName.TestName").
diff --git a/base/test/unit_test_launcher.cc b/base/test/unit_test_launcher.cc
index daf264d..aee90c8 100644
--- a/base/test/unit_test_launcher.cc
+++ b/base/test/unit_test_launcher.cc
@@ -99,6 +99,10 @@ class UnitTestLauncherDelegate : public TestLauncherDelegate {
     TestResultCallback callback;
   };
 
+  virtual void OnTestIterationStarting() OVERRIDE {
+    // Nothing to do.
+  }
+
   virtual std::string GetTestNameForFiltering(
       const testing::TestCase* test_case,
       const testing::TestInfo* test_info) OVERRIDE {
diff --git a/content/public/test/test_launcher.cc b/content/public/test/test_launcher.cc
index 1237451..82616cf 100644
--- a/content/public/test/test_launcher.cc
+++ b/content/public/test/test_launcher.cc
@@ -97,6 +97,7 @@ class WrapperTestLauncherDelegate : public base::TestLauncherDelegate {
   }
 
   // base::TestLauncherDelegate:
+  virtual void OnTestIterationStarting() OVERRIDE;
   virtual std::string GetTestNameForFiltering(
       const testing::TestCase* test_case,
       const testing::TestInfo* test_info) OVERRIDE;
@@ -156,6 +157,10 @@ class WrapperTestLauncherDelegate : public base::TestLauncherDelegate {
   DISALLOW_COPY_AND_ASSIGN(WrapperTestLauncherDelegate);
 };
 
+void WrapperTestLauncherDelegate::OnTestIterationStarting() {
+  tests_to_run_.clear();
+}
+
 std::string WrapperTestLauncherDelegate::GetTestNameForFiltering(
     const testing::TestCase* test_case,
     const testing::TestInfo* test_info) {