Make unittests work in component build

src/compiler/loop-analysis.h

 // Copyright 2014 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_COMPILER_LOOP_ANALYSIS_H_
 #define V8_COMPILER_LOOP_ANALYSIS_H_
 
 #include "src/base/iterator.h"
 #include "src/compiler/graph.h"
 #include "src/compiler/node.h"
+#include "src/globals.h"
 #include "src/zone/zone-containers.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 // TODO(titzer): don't assume entry edges have a particular index.
 static const int kAssumedLoopEntryIndex = 0;  // assume loops are entered here.
 
 class LoopFinderImpl;
@@ skipping 125 matching lines @@
     }
   }
 
   Zone* zone_;
   ZoneVector<Loop*> outer_loops_;
   ZoneVector<Loop> all_loops_;
   ZoneVector<int> node_to_loop_num_;
   ZoneVector<Node*> loop_nodes_;
 };
 
-class LoopFinder {
+class V8_EXPORT_PRIVATE LoopFinder {
  public:
   // Build a loop tree for the entire graph.
   static LoopTree* BuildLoopTree(Graph* graph, Zone* temp_zone);
 };
 
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_LOOP_ANALYSIS_H_