[cleanup] Remove unused code.

Change-Id: If90c13658713cbfdf06200e49773e67495dce85b
Reviewed-on: https://chromium-review.googlesource.com/1225754Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55891}

src/objects/code.h

@@ -305,9 +305,6 @@ class Code : public HeapObject, public NeverReadOnlySpaceObject {
   // object has been moved by delta bytes.
   void Relocate(intptr_t delta);
 
-  // Migrate code described by desc.
-  void CopyFrom(Heap* heap, const CodeDesc& desc);
-
   // Migrate code from desc without flushing the instruction cache.
   void CopyFromNoFlush(Heap* heap, const CodeDesc& desc);
 
@@ -620,9 +617,6 @@ class DependentCode : public WeakFixedArray {
                                 Handle<HeapObject> object,
                                 DependencyGroup group);
 
-  bool Contains(DependencyGroup group, MaybeObject* code);
-  bool IsEmpty(DependencyGroup group);
-
   void DeoptimizeDependentCodeGroup(Isolate* isolate, DependencyGroup group);
 
   bool MarkCodeForDeoptimization(Isolate* isolate, DependencyGroup group);

src/objects/compilation-cache.h

@@ -69,9 +69,6 @@ class CompilationCacheTable
     : public HashTable<CompilationCacheTable, CompilationCacheShape>,
       public NeverReadOnlySpaceObject {
  public:
-  // Find cached value for a string key, otherwise return null.
-  Handle<Object> Lookup(Handle<String> src, Handle<SharedFunctionInfo> shared,
-                        LanguageMode language_mode);
   MaybeHandle<SharedFunctionInfo> LookupScript(Handle<String> src,
                                                Handle<Context> native_context,
                                                LanguageMode language_mode);
@@ -79,11 +76,6 @@ class CompilationCacheTable
                           Handle<Context> native_context,
                           LanguageMode language_mode, int position);
   Handle<Object> LookupRegExp(Handle<String> source, JSRegExp::Flags flags);
-  static Handle<CompilationCacheTable> Put(Handle<CompilationCacheTable> cache,
-                                           Handle<String> src,
-                                           Handle<SharedFunctionInfo> shared,
-                                           LanguageMode language_mode,
-                                           Handle<Object> value);
   static Handle<CompilationCacheTable> PutScript(
       Handle<CompilationCacheTable> cache, Handle<String> src,
       Handle<Context> native_context, LanguageMode language_mode,

src/objects/fixed-array.h

@@ -442,7 +442,6 @@ class ArrayList : public FixedArray {
   // Return a copy of the list of size Length() without the first entry. The
   // number returned by Length() is stored in the first entry.
   static Handle<FixedArray> Elements(Isolate* isolate, Handle<ArrayList> array);
-  bool IsFull();
   DECL_CAST(ArrayList)
 
  private:

src/objects/map.h

@@ -403,9 +403,6 @@ class Map : public HeapObject {
   inline bool has_fixed_typed_array_elements() const;
   inline bool has_dictionary_elements() const;
 
-  static bool IsValidElementsTransition(ElementsKind from_kind,
-                                        ElementsKind to_kind);
-
   // Returns true if the current map doesn't have DICTIONARY_ELEMENTS but if a
   // map with DICTIONARY_ELEMENTS was found in the prototype chain.
   bool DictionaryElementsInPrototypeChainOnly(Isolate* isolate);
@@ -471,8 +468,6 @@ class Map : public HeapObject {
   bool InstancesNeedRewriting(Map* target, int target_number_of_fields,
                               int target_inobject, int target_unused,
                               int* old_number_of_fields) const;
-  // TODO(ishell): moveit!
-  static Handle<Map> GeneralizeAllFields(Isolate* isolate, Handle<Map> map);
   V8_WARN_UNUSED_RESULT static Handle<FieldType> GeneralizeFieldType(
       Representation rep1, Handle<FieldType> type1, Representation rep2,
       Handle<FieldType> type2, Isolate* isolate);

src/objects/string.h

@@ -370,9 +370,6 @@ class String : public Name {
   // Limit for truncation in short printing.
   static const int kMaxShortPrintLength = 1024;
 
-  // Support for regular expressions.
-  const uc16* GetTwoByteData(unsigned start);
-
   // Helper function for flattening strings.
   template <typename sinkchar>
   static void WriteToFlat(String* source, sinkchar* sink, int from, int to);
@@ -556,9 +553,6 @@ class SeqTwoByteString : public SeqString {
   // is deterministic.
   void clear_padding();
 
-  // For regexp code.
-  const uint16_t* SeqTwoByteStringGetData(unsigned start);
-
   DECL_CAST(SeqTwoByteString)
 
   // Garbage collection support.  This method is called by the