SkTDynamicHash: support remove() without needing Deleted().

tests/ImageCacheTest.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "Test.h"
 #include "SkScaledImageCache.h"
 
@@ skipping 30 matching lines @@
         REPORTER_ASSERT(reporter, tmp.pixelRef() == tmp2.pixelRef());
         REPORTER_ASSERT(reporter, tmp.width() == tmp2.width());
         REPORTER_ASSERT(reporter, tmp.height() == tmp2.height());
         cache.unlock(id2);
 
         cache.unlock(id);
     }
 
     // stress test, should trigger purges
     for (size_t i = 0; i < COUNT * 100; ++i) {
+        scale += 1;
+
         SkBitmap tmp;
 
         make_bm(&tmp, DIM, DIM);
         id = cache.addAndLock(bm[0], scale, scale, tmp);
         REPORTER_ASSERT(reporter, NULL != id);
         cache.unlock(id);
-
-        scale += 1;
     }
 
     cache.setByteLimit(0);
 }
 
 #include "TestClassDef.h"
 DEFINE_TESTCLASS("ImageCache", TestImageCacheClass, TestImageCache)