Disable loads and stores to global vars through property cell shortcuts...

Disable loads and stores to global vars through property cell shortcuts installed into parent script context.

The plan is to implement the same idea using vector IC machinery.

Review URL: https://codereview.chromium.org/1422463004

Cr-Commit-Position: refs/heads/master@{#31438}

src/flag-definitions.h

@@ -700,7 +700,6 @@ DEFINE_BOOL(use_idle_notification, true,
 DEFINE_BOOL(use_ic, true, "use inline caching")
 DEFINE_BOOL(trace_ic, false, "trace inline cache state transitions")
 DEFINE_BOOL(vector_stores, true, "use vectors for store ics")
-DEFINE_BOOL(global_var_shortcuts, true, "use ic-less global loads and stores")
 
 // macro-assembler-ia32.cc
 DEFINE_BOOL(native_code_counters, false,
@@ -1083,6 +1082,8 @@ DEFINE_BOOL(unbox_double_fields, V8_DOUBLE_FIELDS_UNBOXING,
             "enable in-object double fields unboxing (64-bit only)")
 DEFINE_IMPLICATION(unbox_double_fields, track_double_fields)
 
+DEFINE_BOOL(global_var_shortcuts, false, "use ic-less global loads and stores")
+
 
 // Cleanup...
 #undef FLAG_FULL