[turbofan] Decouple inlining and native context specialization.

src/compiler.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_COMPILER_H_
 #define V8_COMPILER_H_
 
 #include "src/allocation.h"
 #include "src/ast.h"
 #include "src/bailout-reason.h"
@@ skipping 279 matching lines @@
 
   bool has_global_object() const {
     return !closure().is_null() &&
         (closure()->context()->global_object() != NULL);
   }
 
   JSGlobalObject* global_object() const {
     return has_global_object() ? closure()->context()->global_object() : NULL;
   }
 
+  bool has_native_context() const { return has_global_object(); }
+
+  Context* native_context() const {
+    return has_native_context() ? global_object()->native_context() : nullptr;
+  }
+
   // Accessors for the different compilation modes.
   bool IsOptimizing() const { return mode_ == OPTIMIZE; }
   bool IsStub() const { return mode_ == STUB; }
   void SetOptimizing(BailoutId osr_ast_id, Handle<Code> unoptimized) {
     DCHECK(has_shared_info());
     SetMode(OPTIMIZE);
     osr_ast_id_ = osr_ast_id;
     unoptimized_code_ = unoptimized;
     optimization_id_ = isolate()->NextOptimizationId();
     set_output_code_kind(Code::OPTIMIZED_FUNCTION);
@@ skipping 412 matching lines @@
   size_t info_zone_start_allocation_size_;
   base::ElapsedTimer timer_;
 
   DISALLOW_COPY_AND_ASSIGN(CompilationPhase);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_H_