Implement implicit instance checks for API accessors.

src/mips/stub-cache-mips.cc

Index: src/mips/stub-cache-mips.cc
diff --git a/src/mips/stub-cache-mips.cc b/src/mips/stub-cache-mips.cc
index 8325afe2f9a471906d22fbbd7325652a565b8528..9a8f1a8c934acb32407ec950715d6da20c790438 100644
--- a/src/mips/stub-cache-mips.cc
+++ b/src/mips/stub-cache-mips.cc
@@ -1283,8 +1283,9 @@ void StubCompiler::GenerateLoadInterceptor(Handle<JSObject> object,
       compile_followup_inline = true;
     } else if (lookup->type() == CALLBACKS &&
         lookup->GetCallbackObject()->IsAccessorInfo()) {
-      compile_followup_inline =
-          AccessorInfo::cast(lookup->GetCallbackObject())->getter() != NULL;
+      AccessorInfo* callback = AccessorInfo::cast(lookup->GetCallbackObject());
+      compile_followup_inline = callback->getter() != NULL &&
+          callback->IsCompatibleReceiver(*object);
     }
   }