Fetch strictmode in the interceptor setter from the IC.

src/ia32/stub-cache-ia32.cc

Index: src/ia32/stub-cache-ia32.cc
diff --git a/src/ia32/stub-cache-ia32.cc b/src/ia32/stub-cache-ia32.cc
index 6d8950960546b24601888fafdf2a6f4bea73df52..c1f6eae0265e74e17766ca67fb6bc3182b664ca9 100644
--- a/src/ia32/stub-cache-ia32.cc
+++ b/src/ia32/stub-cache-ia32.cc
@@ -2728,13 +2728,12 @@ Handle<Code> StoreStubCompiler::CompileStoreInterceptor(
   __ push(receiver());
   __ push(this->name());
   __ push(value());
-  __ push(Immediate(Smi::FromInt(strict_mode())));
   __ push(scratch1());  // restore return address
 
   // Do tail-call to the runtime system.
   ExternalReference store_ic_property =
       ExternalReference(IC_Utility(IC::kStoreInterceptorProperty), isolate());
-  __ TailCallExternalReference(store_ic_property, 4, 1);
+  __ TailCallExternalReference(store_ic_property, 3, 1);
 
   // Return the generated code.
   return GetCode(kind(), Code::FAST, name);