Make the strict-mode calling convention for contextual calls the default one.

src/arm/ic-arm.cc

Index: src/arm/ic-arm.cc
diff --git a/src/arm/ic-arm.cc b/src/arm/ic-arm.cc
index 7b3ba36689bc6bd895bef133305339b5c8112d7c..adfef24d09d2bdfa9ea032ea42ec6b5156556dad 100644
--- a/src/arm/ic-arm.cc
+++ b/src/arm/ic-arm.cc
@@ -491,7 +491,7 @@ void CallICBase::GenerateMiss(MacroAssembler* masm,
 
     // Patch the receiver on the stack.
     __ bind(&global);
-    CallStubCompiler::FetchGlobalProxy(masm, r2, r1);
+    __ LoadRoot(r2, Heap::kUndefinedValueRootIndex);
     __ str(r2, MemOperand(sp, argc * kPointerSize));
     __ bind(&invoke);
   }