Include only stuff you need, part 4: ast, scopes + fallout.

src/crankshaft/hydrogen.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_CRANKSHAFT_HYDROGEN_H_
 #define V8_CRANKSHAFT_HYDROGEN_H_
 
 #include "src/accessors.h"
 #include "src/allocation.h"
 #include "src/ast/ast-type-bounds.h"
-#include "src/ast/ast.h"
-#include "src/ast/scopes.h"
 #include "src/bailout-reason.h"
 #include "src/compiler.h"
 #include "src/crankshaft/compilation-phase.h"
 #include "src/crankshaft/hydrogen-instructions.h"
 #include "src/globals.h"
 #include "src/parsing/parse-info.h"
 #include "src/zone.h"
 
 namespace v8 {
 namespace internal {
 
 // Forward declarations.
 class BitVector;
 class FunctionState;
 class HEnvironment;
 class HGraph;
 class HLoopInformation;
 class HOsrBuilder;
 class HTracer;
 class LAllocator;
 class LChunk;
 class LiveRange;
+class Scope;
 
 class HCompilationJob final : public CompilationJob {
  public:
   explicit HCompilationJob(Handle<JSFunction> function)
       : CompilationJob(&info_, "Crankshaft"),
         zone_(function->GetIsolate()->allocator()),
         parse_info_(&zone_, function),
         info_(&parse_info_, function),
         graph_(nullptr),
         chunk_(nullptr) {}
@@ skipping 2996 matching lines @@
   }
 
  private:
   HOptimizedGraphBuilder* builder_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CRANKSHAFT_HYDROGEN_H_