[wasm] Use a Managed<WasmModule> to hold metadata about modules.

src/isolate.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/isolate.h"
 
 #include <stdlib.h>
 
 #include <fstream>  // NOLINT(readability/streams)
 #include <sstream>
@@ skipping 491 matching lines @@
         if (helper.IsStrictFrame(*fun)) flags |= FrameArray::kIsStrict;
         if (exit_frame->IsConstructor()) flags |= FrameArray::kForceConstructor;
 
         elements = FrameArray::AppendJSFrame(elements, recv, fun,
                                              Handle<AbstractCode>::cast(code),
                                              offset, flags);
       } break;
 
       case StackFrame::WASM: {
         WasmFrame* wasm_frame = WasmFrame::cast(frame);
-        Handle<Object> wasm_object(wasm_frame->wasm_obj(), this);
+        Handle<Object> wasm_module(wasm_frame->wasm_obj(), this);

[Mircea Trofin, 2016/10/15 17:38:40]

Could the renames be a separate change?

         const int wasm_function_index = wasm_frame->function_index();
         Code* code = wasm_frame->unchecked_code();
         Handle<AbstractCode> abstract_code(AbstractCode::cast(code), this);
         const int offset =
             static_cast<int>(wasm_frame->pc() - code->instruction_start());
 
         // TODO(wasm): The wasm object returned by the WasmFrame should always
         //             be a wasm object.
-        DCHECK(wasm::IsWasmObject(*wasm_object) ||
-               wasm_object->IsUndefined(this));
+        DCHECK(wasm::IsWasmModule(*wasm_module) ||
+               wasm_module->IsUndefined(this));
 
-        int flags = wasm::WasmIsAsmJs(*wasm_object, this)
+        int flags = wasm::WasmIsAsmJs(*wasm_module, this)
                         ? FrameArray::kIsAsmJsWasmFrame
                         : FrameArray::kIsWasmFrame;
 
-        elements = FrameArray::AppendWasmFrame(elements, wasm_object,
+        elements = FrameArray::AppendWasmFrame(elements, wasm_module,
                                                wasm_function_index,
                                                abstract_code, offset, flags);
       } break;
 
       default:
         break;
     }
   }
 
   elements->ShrinkToFit();
@@ skipping 2912 matching lines @@
   // Then check whether this scope intercepts.
   if ((flag & intercept_mask_)) {
     intercepted_flags_ |= flag;
     return true;
   }
   return false;
 }
 
 }  // namespace internal
 }  // namespace v8