Revert of Make sure that ScratchBuffer::Allocate() always return 8-byte aligned address.

mojo/public/cpp/bindings/tests/buffer_unittest.cc

Index: mojo/public/cpp/bindings/tests/buffer_unittest.cc
diff --git a/mojo/public/cpp/bindings/tests/buffer_unittest.cc b/mojo/public/cpp/bindings/tests/buffer_unittest.cc
index 1487ced7937d6e7e71c9fb181edaf661408677b8..7ef7520f5aec054eea41cdebbb3c9e37e7c222d5 100644
--- a/mojo/public/cpp/bindings/tests/buffer_unittest.cc
+++ b/mojo/public/cpp/bindings/tests/buffer_unittest.cc
@@ -51,23 +51,6 @@
   // And a request so large it will overflow and fail.
   void* overflow = buf.Allocate(std::numeric_limits<size_t>::max() - 12u);
   EXPECT_TRUE(!overflow);
-}
-
-TEST(ScratchBufferTest, Alignment) {
-  Environment env;
-
-  internal::ScratchBuffer buf;
-  // Test that small allocations on the stack are aligned properly.
-  void* small = buf.Allocate(1);
-  EXPECT_EQ(0, reinterpret_cast<ptrdiff_t>(small) % 8);
-  small = buf.Allocate(2);
-  EXPECT_EQ(0, reinterpret_cast<ptrdiff_t>(small) % 8);
-
-  // Test that large allocations on the heap are aligned properly.
-  void* large = buf.Allocate(10*1024);
-  EXPECT_EQ(0, reinterpret_cast<ptrdiff_t>(large) % 8);
-  large = buf.Allocate(100*1024);
-  EXPECT_EQ(0, reinterpret_cast<ptrdiff_t>(large) % 8);
 }
 
 // Tests that Buffer::current() returns the correct value.