only do linux pvalloc OutOfMemoryDeathTest on non-tcmalloc glibc builds

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 33fcc85e6ae9d80e30e58a9f8393229cd149e625..5a1bcdfb1ba4d1bb195092b5d9889128dad06a1c 100644
--- a/base/process/memory_unittest.cc
+++ b/base/process/memory_unittest.cc
@@ -243,12 +243,15 @@ TEST_F(OutOfMemoryDeathTest, Valloc) {
 }
 
 #if defined(OS_LINUX)
+
+#if PVALLOC_AVAILABLE == 1
 TEST_F(OutOfMemoryDeathTest, Pvalloc) {
   ASSERT_DEATH({
       SetUpInDeathAssert();
       value_ = pvalloc(test_size_);
     }, "");
 }
+#endif  // PVALLOC_AVAILABLE == 1
 
 TEST_F(OutOfMemoryDeathTest, Memalign) {
   ASSERT_DEATH({