Allocator cleanup: remove reundant tc_set_new_mode in ProcessMemoryTest

base/process/memory_unittest.cc

Index: base/process/memory_unittest.cc
diff --git a/base/process/memory_unittest.cc b/base/process/memory_unittest.cc
index 6137c1c932d23ad8fa9ca481153ed4beb54a47bf..c4728c52371263dd6f731998761959c08407eda7 100644
--- a/base/process/memory_unittest.cc
+++ b/base/process/memory_unittest.cc
@@ -148,12 +148,6 @@ TEST(ProcessMemoryTest, MacTerminateOnHeapCorruption) {
     !(defined(OS_WIN) && !defined(ALLOCATOR_SHIM)) && \
     !defined(MEMORY_TOOL_REPLACES_ALLOCATOR)
 
-#if defined(USE_TCMALLOC)
-extern "C" {
-int tc_set_new_mode(int mode);
-}
-#endif  // defined(USE_TCMALLOC)
-
 namespace {
 const char *kOomRegex = "Out of memory";
 }  // namespace
@@ -171,12 +165,6 @@ class OutOfMemoryTest : public testing::Test {
     signed_test_size_(std::numeric_limits<ssize_t>::max()) {
   }
 
-#if defined(USE_TCMALLOC)
-  void SetUp() override { tc_set_new_mode(1); }
-
-  void TearDown() override { tc_set_new_mode(0); }
-#endif  // defined(USE_TCMALLOC)
-
  protected:
   void* value_;
   size_t test_size_;