Revert code heap size back to 8MB and fix the benchmark invocation to set the code heap size for be…

vm/heap.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_HEAP_H_
 #define VM_HEAP_H_
 
 #include "platform/assert.h"
 #include "vm/allocation.h"
 #include "vm/flags.h"
@@ skipping 21 matching lines @@
     kCode,
   };
 
   enum ApiCallbacks {
     kIgnoreApiCallbacks,
     kInvokeApiCallbacks
   };
 
   // Default allocation sizes in MB for the old gen and code heaps.
   static const intptr_t kHeapSizeInMB = 512;
-  static const intptr_t kCodeHeapSizeInMB = 10;
+  static const intptr_t kCodeHeapSizeInMB = 8;
 
   ~Heap();
 
   uword Allocate(intptr_t size, Space space) {
     switch (space) {
       case kNew:
         // Do not attempt to allocate very large objects in new space.
         if (!PageSpace::IsPageAllocatableSize(size)) {
           return AllocateOld(size);
         }
@@ skipping 88 matching lines @@
  public:
   NoGCScope() {}
  private:
   DISALLOW_COPY_AND_ASSIGN(NoGCScope);
 };
 #endif  // defined(DEBUG)
 
 }  // namespace dart
 
 #endif  // VM_HEAP_H_