[wasm] Add support for import section.

src/compiler/wasm-compiler.h

Index: src/compiler/wasm-compiler.h
diff --git a/src/compiler/wasm-compiler.h b/src/compiler/wasm-compiler.h
index 082f198bf49f01d48dc0bba009a7f8ae83303aaa..2e86b5600ec63d2becbe246fe120b58968efc9ac 100644
--- a/src/compiler/wasm-compiler.h
+++ b/src/compiler/wasm-compiler.h
@@ -40,7 +40,7 @@ Handle<Code> CompileWasmFunction(wasm::ErrorThrower& thrower, Isolate* isolate,
 // Wraps a JS function, producing a code object that can be called from WASM.
 Handle<Code> CompileWasmToJSWrapper(Isolate* isolate, wasm::ModuleEnv* module,
                                     Handle<JSFunction> function,
-                                    uint32_t index);
+                                    wasm::FunctionSig* sig, const char* name);
 
 // Wraps a given wasm code object, producing a JSFunction that can be called
 // from JavaScript.
@@ -100,6 +100,7 @@ class WasmGraphBuilder {
   Node* Unreachable();
 
   Node* CallDirect(uint32_t index, Node** args);
+  Node* CallImport(uint32_t index, Node** args);
   Node* CallIndirect(uint32_t index, Node** args);
   void BuildJSToWasmWrapper(Handle<Code> wasm_code, wasm::FunctionSig* sig);
   void BuildWasmToJSWrapper(Handle<JSFunction> function,