[modules] Basic support of import statements.

src/runtime/runtime.h

 // 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.
 
 #ifndef V8_RUNTIME_RUNTIME_H_
 #define V8_RUNTIME_RUNTIME_H_
 
 #include <memory>
 
 #include "src/allocation.h"
@@ skipping 402 matching lines @@
   F(ToString, 1, 1)                                  \
   F(ToName, 1, 1)                                    \
   F(SameValue, 2, 1)                                 \
   F(SameValueZero, 2, 1)                             \
   F(Compare, 3, 1)                                   \
   F(HasInPrototypeChain, 2, 1)                       \
   F(CreateIterResultObject, 2, 1)                    \
   F(IsAccessCheckNeeded, 1, 1)                       \
   F(CreateDataProperty, 3, 1)                        \
   F(LoadModuleExport, 1, 1)                          \
+  F(LoadModuleImport, 2, 1)                          \
   F(StoreModuleExport, 2, 1)
 
 #define FOR_EACH_INTRINSIC_OPERATORS(F) \
   F(Multiply, 2, 1)                     \
   F(Divide, 2, 1)                       \
   F(Modulus, 2, 1)                      \
   F(Add, 2, 1)                          \
   F(Subtract, 2, 1)                     \
   F(ShiftLeft, 2, 1)                    \
   F(ShiftRight, 2, 1)                   \
@@ skipping 692 matching lines @@
 
 class DeclareGlobalsEvalFlag : public BitField<bool, 0, 1> {};
 class DeclareGlobalsNativeFlag : public BitField<bool, 1, 1> {};
 STATIC_ASSERT(LANGUAGE_END == 2);
 class DeclareGlobalsLanguageMode : public BitField<LanguageMode, 2, 1> {};
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_RUNTIME_RUNTIME_H_