[stubs] Port KeyedStoreIC_Megamorphic stub to Turbofan

src/objects.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 #include <memory>
 
@@ skipping 9185 matching lines @@
                 AllocationSiteUpdateMode::kUpdate>
   static bool DigestTransitionFeedback(Handle<AllocationSite> site,
                                        ElementsKind to_kind);
 
   DECLARE_PRINTER(AllocationSite)
   DECLARE_VERIFIER(AllocationSite)
 
   DECLARE_CAST(AllocationSite)
   static inline AllocationSiteMode GetMode(
       ElementsKind boilerplate_elements_kind);
-  static inline AllocationSiteMode GetMode(ElementsKind from, ElementsKind to);
+  static AllocationSiteMode GetMode(ElementsKind from, ElementsKind to);
   static inline bool CanTrack(InstanceType type);
 
   static const int kTransitionInfoOffset = HeapObject::kHeaderSize;
   static const int kNestedSiteOffset = kTransitionInfoOffset + kPointerSize;
   static const int kPretenureDataOffset = kNestedSiteOffset + kPointerSize;
   static const int kPretenureCreateCountOffset =
       kPretenureDataOffset + kPointerSize;
   static const int kDependentCodeOffset =
       kPretenureCreateCountOffset + kPointerSize;
   static const int kWeakNextOffset = kDependentCodeOffset + kPointerSize;
@@ skipping 2604 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_