Separate CompilationInfo into its own file.

src/compiler/linkage.cc

 // Copyright 2014 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/compiler/linkage.h"
 
 #include "src/ast/scopes.h"
 #include "src/builtins/builtins-utils.h"
 #include "src/code-stubs.h"
-#include "src/compiler.h"
+#include "src/compilation-info.h"
 #include "src/compiler/common-operator.h"
 #include "src/compiler/frame.h"
 #include "src/compiler/node.h"
 #include "src/compiler/osr.h"
 #include "src/compiler/pipeline.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
@@ skipping 500 matching lines @@
     DCHECK(loc == regloc(kContextRegister, MachineType::AnyTagged()));
     return LinkageLocation::ForCalleeFrameSlot(Frame::kContextSlot,
                                                MachineType::AnyTagged());
   }
 }
 
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8