[wasm] remove faux code objects

src/wasm/wasm-module.h

Index: src/wasm/wasm-module.h
diff --git a/src/wasm/wasm-module.h b/src/wasm/wasm-module.h
index 4a9faf0b000f63efbdabf051d0afbd4ee7a789d6..4d476a8b433d584a57a5757613d2cded423a57b8 100644
--- a/src/wasm/wasm-module.h
+++ b/src/wasm/wasm-module.h
@@ -236,17 +236,15 @@ struct WasmModuleInstance {
         mem_start(nullptr),
         mem_size(0),
         globals_start(nullptr) {}
+  void PopulateExportTable(const std::vector<Handle<Code>>& compiled_functions,
+                           const std::vector<uint16_t>& functions);
 };
 
-// forward declaration.
-class WasmLinker;
-
 // Interface provided to the decoder/graph builder which contains only
 // minimal information about the globals, functions, and function tables.
 struct ModuleEnv {
   const WasmModule* module;
   WasmModuleInstance* instance;
-  WasmLinker* linker;
   ModuleOrigin origin;
 
   bool IsValidGlobal(uint32_t index) {
@@ -283,15 +281,13 @@ struct ModuleEnv {
 
   bool asm_js() { return origin == kAsmJsOrigin; }
 
-  Handle<Code> GetCodeOrPlaceholder(uint32_t index) const;
-  Handle<Code> GetImportCode(uint32_t index);
   Handle<FixedArray> GetFunctionTable();
 
   static compiler::CallDescriptor* GetWasmCallDescriptor(Zone* zone,
-                                                         FunctionSig* sig);
+                                                         FunctionSig* sig,
+                                                         bool internal = false);
   static compiler::CallDescriptor* GetI32WasmCallDescriptor(
       Zone* zone, compiler::CallDescriptor* descriptor);
-  compiler::CallDescriptor* GetCallDescriptor(Zone* zone, uint32_t index);
 };
 
 // A helper for printing out the names of functions.