Remove several grab-bag includes from the v8.h header.

src/api.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_API_H_
 #define V8_API_H_
 
-#include "src/v8.h"
-
 #include "include/v8-testing.h"
 #include "src/contexts.h"
 #include "src/factory.h"
 #include "src/isolate.h"
 #include "src/list-inl.h"
+#include "src/objects-inl.h"
 
 namespace v8 {
 
 // Constants used in the implementation of the API.  The most natural thing
 // would usually be to place these with the classes that use them, but
 // we want to keep them out of v8.h because it is an externally
 // visible file.
 class Consts {
  public:
   enum TemplateType {
@@ skipping 614 matching lines @@
     stress_type_ = stress_type;
   }
 
  private:
   static v8::Testing::StressType stress_type_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_API_H_