Fix use of ConnectNamedPipe in FileUtilTest.ReadFileToStringWithNamedPipe.

ConnectNamedPipe returns false with a specific error code if the other
end of the pipe is already open. This is not a failure.

This is a partial revert of commit 3baed341.

BUG=none
R=dpranke@chromium.org, fdoray@chromium.org

Change-Id: Iaba28fd35e1b7435392ea5d1194bdd5f477ce3b8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2187496
Commit-Queue: Dirk Pranke <dpranke@chromium.org>
Reviewed-by: François Doray <fdoray@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Auto-Submit: Greg Thompson <grt@chromium.org>
Cr-Commit-Position: refs/heads/master@{#766547}

base/files/file_util_unittest.cc

@@ -3308,9 +3308,11 @@ MULTIPROCESS_TEST_MAIN(ChildMain) {
                               PIPE_WAIT, 1, 0, 0, 0, NULL);
   EXPECT_NE(ph, INVALID_HANDLE_VALUE);
   EXPECT_TRUE(SetEvent(sync_event.Get()));
-  ::SetLastError(0);
-  EXPECT_TRUE(ConnectNamedPipe(ph, NULL));
-  EXPECT_EQ(::GetLastError(), 0U);
+  if (!::ConnectNamedPipe(ph, /*lpOverlapped=*/nullptr)) {
+    // ERROR_PIPE_CONNECTED means that the other side has already connected.
+    auto error = ::GetLastError();
+    EXPECT_EQ(error, DWORD{ERROR_PIPE_CONNECTED});
+  }
 
   DWORD written;
   EXPECT_TRUE(::WriteFile(ph, kTestData, strlen(kTestData), &written, NULL));
@@ -3337,7 +3339,11 @@ MULTIPROCESS_TEST_MAIN(MoreThanBufferSizeChildMain) {
                               PIPE_WAIT, 1, data.size(), data.size(), 0, NULL);
   EXPECT_NE(ph, INVALID_HANDLE_VALUE);
   EXPECT_TRUE(SetEvent(sync_event.Get()));
-  EXPECT_TRUE(ConnectNamedPipe(ph, NULL));
+  if (!::ConnectNamedPipe(ph, /*lpOverlapped=*/nullptr)) {
+    // ERROR_PIPE_CONNECTED means that the other side has already connected.
+    auto error = ::GetLastError();
+    EXPECT_EQ(error, DWORD{ERROR_PIPE_CONNECTED});
+  }
 
   DWORD written;
   EXPECT_TRUE(::WriteFile(ph, data.c_str(), data.size(), &written, NULL));

testing/multiprocess_func_list.cc

@@ -6,8 +6,6 @@
 
 #include <map>
 
-#include "third_party/googletest/src/googletest/src/gtest-internal-inl.h"
-
 // Helper functions to maintain mapping of "test name"->test func.
 // The information is accessed via a global map.
 namespace multi_process_function_list {
@@ -43,20 +41,15 @@ AppendMultiProcessTest::AppendMultiProcessTest(
 }
 
 int InvokeChildProcessTest(const std::string& test_name) {
-  auto* const impl = ::testing::internal::GetUnitTestImpl();
   MultiProcessTestMap& func_lookup_table = GetMultiprocessFuncMap();
   MultiProcessTestMap::iterator it = func_lookup_table.find(test_name);
   if (it != func_lookup_table.end()) {
     const ProcessFunctions& process_functions = it->second;
-    if (process_functions.setup) {
-      impl->os_stack_trace_getter()->UponLeavingGTest();
+    if (process_functions.setup)
       (*process_functions.setup)();
-    }
-    if (process_functions.main) {
-      impl->os_stack_trace_getter()->UponLeavingGTest();
+    if (process_functions.main)
       return (*process_functions.main)();
   }
-  }
 
   return -1;
 }