Remove recently introduced FunctionType vm class by merging it into class Type.

runtime/vm/snapshot.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_SNAPSHOT_H_
 #define VM_SNAPSHOT_H_
 
 #include "platform/assert.h"
 #include "vm/allocation.h"
 #include "vm/bitfield.h"
@@ skipping 34 matching lines @@
 class RawClosureData;
 class RawCodeSourceMap;
 class RawContext;
 class RawContextScope;
 class RawDouble;
 class RawExceptionHandlers;
 class RawField;
 class RawFloat32x4;
 class RawFloat64x2;
 class RawFunction;
-class RawFunctionType;
 class RawGrowableObjectArray;
 class RawICData;
 class RawImmutableArray;
 class RawInstructions;
 class RawInt32x4;
 class RawJSRegExp;
 class RawLanguageError;
 class RawLibrary;
 class RawLibraryPrefix;
 class RawLinkedHashMap;
@@ skipping 372 matching lines @@
   RawTokenStream* NewTokenStream(intptr_t len);
   RawContext* NewContext(intptr_t num_variables);
   RawClass* NewClass(intptr_t class_id);
   RawInstance* NewInstance();
   RawMint* NewMint(int64_t value);
   RawBigint* NewBigint();
   RawTypedData* NewTypedData(intptr_t class_id, intptr_t len);
   RawDouble* NewDouble(double value);
   RawUnresolvedClass* NewUnresolvedClass();
   RawType* NewType();
-  RawFunctionType* NewFunctionType();
   RawTypeRef* NewTypeRef();
   RawTypeParameter* NewTypeParameter();
   RawBoundedType* NewBoundedType();
   RawMixinAppType* NewMixinAppType();
   RawPatchClass* NewPatchClass();
   RawClosure* NewClosure();
   RawClosureData* NewClosureData();
   RawRedirectionData* NewRedirectionData();
   RawFunction* NewFunction();
   RawCode* NewCode(intptr_t pointer_offsets_length);
@@ skipping 165 matching lines @@
   friend class MixinAppType;
   friend class Namespace;
   friend class ObjectPool;
   friend class PatchClass;
   friend class RedirectionData;
   friend class Script;
   friend class Stacktrace;
   friend class SubtypeTestCache;
   friend class TokenStream;
   friend class Type;
-  friend class FunctionType;
   friend class TypeArguments;
   friend class TypeParameter;
   friend class TypeRef;
   friend class UnhandledException;
   friend class UnresolvedClass;
   friend class WeakProperty;
   DISALLOW_COPY_AND_ASSIGN(SnapshotReader);
 };
 
 
@@ skipping 551 matching lines @@
  private:
   SnapshotWriter* writer_;
   bool as_references_;
 
   DISALLOW_COPY_AND_ASSIGN(SnapshotWriterVisitor);
 };
 
 }  // namespace dart
 
 #endif  // VM_SNAPSHOT_H_