[wasm] Improve naming consistency for WASM instances.

src/frames.cc

 // 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.
 
 #include "src/frames.h"
 
 #include <memory>
 #include <sstream>
 
 #include "src/base/bits.h"
@@ skipping 1474 matching lines @@
 Code* WasmFrame::unchecked_code() const {
   return static_cast<Code*>(isolate()->FindCodeObject(pc()));
 }
 
 void WasmFrame::Iterate(ObjectVisitor* v) const { IterateCompiledFrame(v); }
 
 Address WasmFrame::GetCallerStackPointer() const {
   return fp() + ExitFrameConstants::kCallerSPOffset;
 }
 
-Object* WasmFrame::wasm_obj() const {
+Object* WasmFrame::wasm_instance() const {
   Object* ret = wasm::GetOwningWasmInstance(LookupCode());
   if (ret == nullptr) ret = *(isolate()->factory()->undefined_value());
   return ret;
 }
 
 uint32_t WasmFrame::function_index() const {
   FixedArray* deopt_data = LookupCode()->deoptimization_data();
   DCHECK(deopt_data->length() == 2);
   return Smi::cast(deopt_data->get(1))->value();
 }
 
 Script* WasmFrame::script() const {
-  Handle<JSObject> wasm(JSObject::cast(wasm_obj()), isolate());
-  if (wasm::WasmIsAsmJs(*wasm, isolate())) {
-    return *wasm::GetAsmWasmScript(wasm);
+  Handle<JSObject> instance(JSObject::cast(wasm_instance()), isolate());
+  if (wasm::WasmIsAsmJs(*instance, isolate())) {
+    return *wasm::GetAsmWasmScript(instance);
   }
-  Handle<wasm::WasmDebugInfo> debug_info = wasm::GetDebugInfo(wasm);
+  Handle<wasm::WasmDebugInfo> debug_info = wasm::GetDebugInfo(instance);
   return wasm::WasmDebugInfo::GetFunctionScript(debug_info, function_index());
 }
 
 int WasmFrame::position() const {
   int position = StandardFrame::position();
-  if (wasm::WasmIsAsmJs(wasm_obj(), isolate())) {
-    Handle<JSObject> wasm(JSObject::cast(wasm_obj()), isolate());
-    position = wasm::GetAsmWasmSourcePosition(wasm, function_index(), position);
+  if (wasm::WasmIsAsmJs(wasm_instance(), isolate())) {
+    Handle<JSObject> instance(JSObject::cast(wasm_instance()), isolate());
+    position =
+        wasm::GetAsmWasmSourcePosition(instance, function_index(), position);
   }
   return position;
 }
 
 int WasmFrame::LookupExceptionHandlerInTable(int* stack_slots) {
   DCHECK_NOT_NULL(stack_slots);
   Code* code = LookupCode();
   HandlerTable* table = HandlerTable::cast(code->handler_table());
   int pc_offset = static_cast<int>(pc() - code->entry());
   *stack_slots = code->stack_slots();
@@ skipping 431 matching lines @@
   for (StackFrameIterator it(isolate); !it.done(); it.Advance()) {
     StackFrame* frame = AllocateFrameCopy(it.frame(), zone);
     list.Add(frame, zone);
   }
   return list.ToVector();
 }
 
 
 }  // namespace internal
 }  // namespace v8