Remove grab-bag includes of v8.h from several files.

src/compilation-dependencies.h

 // Copyright 2015 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_DEPENDENCIES_H_
 #define V8_DEPENDENCIES_H_
 
+#include "src/handles.h"
+#include "src/objects.h"
+
 namespace v8 {
 namespace internal {
 
 // Collects dependencies for this compilation, e.g. assumptions about
 // stable maps, constant globals, etc.
 class CompilationDependencies {
  public:
   CompilationDependencies(Isolate* isolate, Zone* zone)
       : isolate_(isolate),
         zone_(zone),
@@ skipping 37 matching lines @@
   bool aborted_;
   ZoneList<Handle<HeapObject> >* groups_[DependentCode::kGroupCount];
 
   DependentCode* Get(Handle<Object> object);
   void Set(Handle<Object> object, Handle<DependentCode> dep);
 };
 }
 }  // namespace v8::internal
 
 #endif  // V8_DEPENDENCIES_H_