Revert 10413-10416 initial memory use reduction due to

test/cctest/test-mark-compact.cc

Index: test/cctest/test-mark-compact.cc
===================================================================
--- test/cctest/test-mark-compact.cc	(revision 10415)
+++ test/cctest/test-mark-compact.cc	(working copy)
@@ -526,25 +526,12 @@
 
 TEST(BootUpMemoryUse) {
   intptr_t initial_memory = MemoryInUse();
-  FLAG_crankshaft = false;  // Avoid flakiness.
   // Only Linux has the proc filesystem and only if it is mapped.  If it's not
   // there we just skip the test.
   if (initial_memory >= 0) {
     InitializeVM();
     intptr_t booted_memory = MemoryInUse();
-    if (sizeof(initial_memory) == 8) {
-      if (v8::internal::Snapshot::IsEnabled()) {
-        CHECK_LE(booted_memory - initial_memory, 3700 * 1024);  // 3640.
-      } else {
-        CHECK_LE(booted_memory - initial_memory, 3300 * 1024);  // 3276.
-      }
-    } else {
-      if (v8::internal::Snapshot::IsEnabled()) {
-        CHECK_LE(booted_memory - initial_memory, 2300 * 1024);  // 2276.
-      } else {
-        CHECK_LE(booted_memory - initial_memory, 2500 * 1024);  // 2416
-      }
-    }
+    CHECK_LE(booted_memory - initial_memory, 16 * 1024 * 1024);
   }
 }