[objects] Remove unneeded using declarations

HeapObject::GetHeap and HeapObject::GetIsolate are gone since
https://crrev.com/c/1140319 (landed in July), hence we can clean up the
using declarations to force use of the methods declared in
NeverReadOnlySpaceObject.

R=delphick@chromium.org

Bug: v8:7786
Change-Id: Iec4edd394ac57a3f378dd1a9a100320e82cf8ea5
Reviewed-on: https://chromium-review.googlesource.com/1224414
Reviewed-by: Dan Elphick <delphick@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55863}

src/contexts.h

@@ -436,11 +436,6 @@ class ScriptContextTable : public FixedArray {
 
 class Context : public FixedArray, public NeverReadOnlySpaceObject {
  public:
-  // Use the mixin methods over the HeapObject methods.
-  // TODO(v8:7786) Remove once the HeapObject methods are gone.
-  using NeverReadOnlySpaceObject::GetHeap;
-  using NeverReadOnlySpaceObject::GetIsolate;
-
   // Conversions.
   static inline Context* cast(Object* context);
 

src/feedback-vector.h

@@ -147,11 +147,6 @@ class FeedbackMetadata;
 // metadata.
 class FeedbackVector : public HeapObject, public NeverReadOnlySpaceObject {
  public:
-  // Use the mixin methods over the HeapObject methods.
-  // TODO(v8:7786) Remove once the HeapObject methods are gone.
-  using NeverReadOnlySpaceObject::GetHeap;
-  using NeverReadOnlySpaceObject::GetIsolate;
-
   // Casting.
   static inline FeedbackVector* cast(Object* obj);
 

src/objects.h

@@ -1997,11 +1997,6 @@ class PropertyArray : public HeapObject {
 // JSObject and JSProxy.
 class JSReceiver : public HeapObject, public NeverReadOnlySpaceObject {
  public:
-  // Use the mixin methods over the HeapObject methods.
-  // TODO(v8:7786) Remove once the HeapObject methods are gone.
-  using NeverReadOnlySpaceObject::GetHeap;
-  using NeverReadOnlySpaceObject::GetIsolate;
-
   // Returns true if there is no slow (ie, dictionary) backing store.
   inline bool HasFastProperties() const;
 
@@ -4016,9 +4011,6 @@ class AccessorPair: public Struct {
 
 class StackFrameInfo : public Struct, public NeverReadOnlySpaceObject {
  public:
-  using NeverReadOnlySpaceObject::GetHeap;
-  using NeverReadOnlySpaceObject::GetIsolate;
-
   DECL_INT_ACCESSORS(line_number)
   DECL_INT_ACCESSORS(column_number)
   DECL_INT_ACCESSORS(script_id)

src/objects/allocation-site.h

@@ -29,11 +29,6 @@ class AllocationSite : public Struct, public NeverReadOnlySpaceObject {
     kLastPretenureDecisionValue = kZombie
   };
 
-  // Use the mixin methods over the HeapObject methods.
-  // TODO(v8:7786) Remove once the HeapObject methods are gone.
-  using NeverReadOnlySpaceObject::GetHeap;
-  using NeverReadOnlySpaceObject::GetIsolate;
-
   const char* PretenureDecisionName(PretenureDecision decision);
 
   // Contains either a Smi-encoded bitfield or a boilerplate. If it's a Smi the

src/objects/bigint.cc

@@ -36,9 +36,6 @@ namespace internal {
 class MutableBigInt : public FreshlyAllocatedBigInt,
                       public NeverReadOnlySpaceObject {
  public:
-  using NeverReadOnlySpaceObject::GetHeap;
-  using NeverReadOnlySpaceObject::GetIsolate;
-
   // Bottleneck for converting MutableBigInts to BigInts.
   static MaybeHandle<BigInt> MakeImmutable(MaybeHandle<MutableBigInt> maybe);
   static Handle<BigInt> MakeImmutable(Handle<MutableBigInt> result);

src/objects/code.h

@@ -27,8 +27,6 @@ class Register;
 // Code describes objects with on-the-fly generated machine code.
 class Code : public HeapObject, public NeverReadOnlySpaceObject {
  public:
-  using NeverReadOnlySpaceObject::GetHeap;
-  using NeverReadOnlySpaceObject::GetIsolate;
   // Opaque data type for encapsulating code flags like kind, inline
   // cache state, and arguments count.
   typedef uint32_t Flags;
@@ -459,9 +457,6 @@ class Code : public HeapObject, public NeverReadOnlySpaceObject {
 // field {Code::code_data_container} itself is immutable.
 class CodeDataContainer : public HeapObject, public NeverReadOnlySpaceObject {
  public:
-  using NeverReadOnlySpaceObject::GetHeap;
-  using NeverReadOnlySpaceObject::GetIsolate;
-
   DECL_ACCESSORS(next_code_link, Object)
   DECL_INT_ACCESSORS(kind_specific_flags)
 
@@ -501,9 +496,6 @@ class CodeDataContainer : public HeapObject, public NeverReadOnlySpaceObject {
 
 class AbstractCode : public HeapObject, public NeverReadOnlySpaceObject {
  public:
-  using NeverReadOnlySpaceObject::GetHeap;
-  using NeverReadOnlySpaceObject::GetIsolate;
-
   // All code kinds and INTERPRETED_FUNCTION.
   enum Kind {
 #define DEFINE_CODE_KIND_ENUM(name) name,

src/objects/compilation-cache.h

@@ -69,9 +69,6 @@ class CompilationCacheTable
     : public HashTable<CompilationCacheTable, CompilationCacheShape>,
       public NeverReadOnlySpaceObject {
  public:
-  using NeverReadOnlySpaceObject::GetHeap;
-  using NeverReadOnlySpaceObject::GetIsolate;
-
   // Find cached value for a string key, otherwise return null.
   Handle<Object> Lookup(Handle<String> src, Handle<SharedFunctionInfo> shared,
                         LanguageMode language_mode);

src/objects/debug-objects.h

@@ -21,9 +21,6 @@ class BytecodeArray;
 // debugged.
 class DebugInfo : public Struct, public NeverReadOnlySpaceObject {
  public:
-  using NeverReadOnlySpaceObject::GetHeap;
-  using NeverReadOnlySpaceObject::GetIsolate;
-
   enum Flag {
     kNone = 0,
     kHasBreakInfo = 1 << 0,

src/objects/map.h

@@ -971,9 +971,6 @@ class Map : public HeapObject {
 class NormalizedMapCache : public WeakFixedArray,
                            public NeverReadOnlySpaceObject {
  public:
-  using NeverReadOnlySpaceObject::GetHeap;
-  using NeverReadOnlySpaceObject::GetIsolate;
-
   static Handle<NormalizedMapCache> New(Isolate* isolate);
 
   V8_WARN_UNUSED_RESULT MaybeHandle<Map> Get(Handle<Map> fast_map,

src/objects/module.h

@@ -27,9 +27,6 @@ class Zone;
 // The runtime representation of an ECMAScript module.
 class Module : public Struct, public NeverReadOnlySpaceObject {
  public:
-  using NeverReadOnlySpaceObject::GetHeap;
-  using NeverReadOnlySpaceObject::GetIsolate;
-
   DECL_CAST(Module)
   DECL_VERIFIER(Module)
   DECL_PRINTER(Module)

src/objects/script.h

@@ -17,9 +17,6 @@ namespace internal {
 // Script describes a script which has been added to the VM.
 class Script : public Struct, public NeverReadOnlySpaceObject {
  public:
-  using NeverReadOnlySpaceObject::GetHeap;
-  using NeverReadOnlySpaceObject::GetIsolate;
-
   // Script types.
   enum Type {
     TYPE_NATIVE = 0,

src/objects/shared-function-info.h

@@ -179,9 +179,6 @@ class InterpreterData : public Struct {
 // shared by multiple instances of the function.
 class SharedFunctionInfo : public HeapObject, public NeverReadOnlySpaceObject {
  public:
-  using NeverReadOnlySpaceObject::GetHeap;
-  using NeverReadOnlySpaceObject::GetIsolate;
-
   static constexpr Object* const kNoSharedNameSentinel = Smi::kZero;
 
   // [name]: Returns shared name if it exists or an empty string otherwise.

src/objects/templates.h

@@ -15,9 +15,6 @@ namespace internal {
 
 class TemplateInfo : public Struct, public NeverReadOnlySpaceObject {
  public:
-  using NeverReadOnlySpaceObject::GetHeap;
-  using NeverReadOnlySpaceObject::GetIsolate;
-
   DECL_ACCESSORS(tag, Object)
   DECL_ACCESSORS(serial_number, Object)
   DECL_INT_ACCESSORS(number_of_properties)

src/wasm/wasm-objects.h

@@ -542,9 +542,6 @@ class WasmExportedFunctionData : public Struct {
 
 class WasmDebugInfo : public Struct, public NeverReadOnlySpaceObject {
  public:
-  using NeverReadOnlySpaceObject::GetHeap;
-  using NeverReadOnlySpaceObject::GetIsolate;
-
   DECL_ACCESSORS(wasm_instance, WasmInstanceObject)
   DECL_ACCESSORS(interpreter_handle, Object);
   DECL_ACCESSORS(interpreted_functions, Object);