Remove grab-bag includes of v8.h from everywhere.

src/heap-snapshot-generator.h

 // Copyright 2013 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_HEAP_SNAPSHOT_GENERATOR_H_
 #define V8_HEAP_SNAPSHOT_GENERATOR_H_
 
+#include "include/v8-profiler.h"
 #include "src/base/platform/time.h"
+#include "src/objects.h"
 #include "src/strings-storage.h"
 
 namespace v8 {
 namespace internal {
 
 class AllocationTracker;
 class AllocationTraceNode;
 class HeapEntry;
+class HeapIterator;
+class HeapProfiler;
 class HeapSnapshot;
 class SnapshotFiller;
 
 class HeapGraphEdge BASE_EMBEDDED {
  public:
   enum Type {
     kContextVariable = v8::HeapGraphEdge::kContextVariable,
     kElement = v8::HeapGraphEdge::kElement,
     kProperty = v8::HeapGraphEdge::kProperty,
     kInternal = v8::HeapGraphEdge::kInternal,
@@ skipping 581 matching lines @@
   friend class HeapSnapshotJSONSerializerEnumerator;
   friend class HeapSnapshotJSONSerializerIterator;
 
   DISALLOW_COPY_AND_ASSIGN(HeapSnapshotJSONSerializer);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_SNAPSHOT_GENERATOR_H_