Add a "--silent" flag to our test suite to disable gtest output. This clears up the test logs when …

base/test/test_suite.cc

Index: base/test/test_suite.cc
===================================================================
--- base/test/test_suite.cc	(revision 133452)
+++ base/test/test_suite.cc	(working copy)
@@ -70,6 +70,7 @@
 }  // namespace
 
 const char TestSuite::kStrictFailureHandling[] = "strict_failure_handling";
+const char TestSuite::kSilent[] = "silent";
 
 TestSuite::TestSuite(int argc, char** argv) : initialized_command_line_(false) {
   PreInitialize(argc, argv, true);
@@ -176,6 +177,14 @@
   std::string client_func =
       CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
           switches::kTestChildProcess);
+
+  bool silent = CommandLine::ForCurrentProcess()->HasSwitch(kSilent);
+  if (silent) {
+    testing::TestEventListeners& listeners =
+        testing::UnitTest::GetInstance()->listeners();
+    delete listeners.Release(listeners.default_result_printer());
+  }
+
   // Check to see if we are being run as a client process.
   if (!client_func.empty())
     return multi_process_function_list::InvokeChildProcessTest(client_func);
@@ -185,18 +194,20 @@
   if (result != 0 && GetTestCount(&TestSuite::NonIgnoredFailures) == 0)
     result = 0;
 
-  // Display the number of flaky tests.
-  int flaky_count = GetTestCount(&TestSuite::IsMarkedFlaky);
-  if (flaky_count) {
-    printf("  YOU HAVE %d FLAKY %s\n\n", flaky_count,
-           flaky_count == 1 ? "TEST" : "TESTS");
-  }
+  if (!silent) {
+    // Display the number of flaky tests.
+    int flaky_count = GetTestCount(&TestSuite::IsMarkedFlaky);
+    if (flaky_count) {
+      printf("  YOU HAVE %d FLAKY %s\n\n", flaky_count,
+             flaky_count == 1 ? "TEST" : "TESTS");
+    }
 
-  // Display the number of tests with ignored failures (FAILS).
-  int failing_count = GetTestCount(&TestSuite::IsMarkedFailing);
-  if (failing_count) {
-    printf("  YOU HAVE %d %s with ignored failures (FAILS prefix)\n\n",
-           failing_count, failing_count == 1 ? "test" : "tests");
+    // Display the number of tests with ignored failures (FAILS).
+    int failing_count = GetTestCount(&TestSuite::IsMarkedFailing);
+    if (failing_count) {
+      printf("  YOU HAVE %d %s with ignored failures (FAILS prefix)\n\n",
+             failing_count, failing_count == 1 ? "test" : "tests");
+    }
   }
 
 #if defined(OS_MACOSX)