[cleanup] Port KeyedLoadIC_{Slow,Miss} to TF and drop unused IC handler code

src/counters.h

 // Copyright 2012 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_COUNTERS_H_
 #define V8_COUNTERS_H_
 
 #include "include/v8.h"
 #include "src/allocation.h"
 #include "src/base/atomic-utils.h"
@@ skipping 1074 matching lines @@
   SC(ic_keyed_load_generic_smi, V8.ICKeyedLoadGenericSmi)                      \
   SC(ic_keyed_load_generic_symbol, V8.ICKeyedLoadGenericSymbol)                \
   SC(ic_keyed_load_generic_slow, V8.ICKeyedLoadGenericSlow)                    \
   SC(ic_named_load_global_stub, V8.ICNamedLoadGlobalStub)                      \
   SC(ic_store_normal_miss, V8.ICStoreNormalMiss)                               \
   SC(ic_store_normal_hit, V8.ICStoreNormalHit)                                 \
   SC(ic_binary_op_miss, V8.ICBinaryOpMiss)                                     \
   SC(ic_compare_miss, V8.ICCompareMiss)                                        \
   SC(ic_call_miss, V8.ICCallMiss)                                              \
   SC(ic_keyed_call_miss, V8.ICKeyedCallMiss)                                   \
-  SC(ic_load_miss, V8.ICLoadMiss)                                              \
-  SC(ic_keyed_load_miss, V8.ICKeyedLoadMiss)                                   \
   SC(ic_store_miss, V8.ICStoreMiss)                                            \
   SC(ic_keyed_store_miss, V8.ICKeyedStoreMiss)                                 \
   SC(cow_arrays_created_runtime, V8.COWArraysCreatedRuntime)                   \
   SC(cow_arrays_converted, V8.COWArraysConverted)                              \
   SC(constructed_objects, V8.ConstructedObjects)                               \
   SC(constructed_objects_runtime, V8.ConstructedObjectsRuntime)                \
   SC(negative_lookups, V8.NegativeLookups)                                     \
   SC(negative_lookups_miss, V8.NegativeLookupsMiss)                            \
   SC(megamorphic_stub_cache_probes, V8.MegamorphicStubCacheProbes)             \
   SC(megamorphic_stub_cache_misses, V8.MegamorphicStubCacheMisses)             \
@@ skipping 230 matching lines @@
 
   explicit Counters(Isolate* isolate);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(Counters);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COUNTERS_H_