rename gradients private BitmapCache to GradientBitmapCache

src/effects/gradients/SkGradientShader.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkGradientShaderPriv.h"
 #include "SkLinearGradient.h"
 #include "SkRadialGradient.h"
@@ skipping 656 matching lines @@
     if (fColorCount > 2) {
         for (int i = 1; i < fColorCount; i++) {
             *buffer++ = fRecs[i].fPos;
         }
     }
     *buffer++ = fGradFlags;
     SkASSERT(buffer - storage.get() == count);
 
     ///////////////////////////////////
 
-    static SkBitmapCache* gCache;
+    static SkGradientBitmapCache* gCache;
     // each cache cost 1K of RAM, since each bitmap will be 1x256 at 32bpp
     static const int MAX_NUM_CACHED_GRADIENT_BITMAPS = 32;
     SkAutoMutexAcquire ama(gGradientCacheMutex);
 
     if (NULL == gCache) {
-        gCache = SkNEW_ARGS(SkBitmapCache, (MAX_NUM_CACHED_GRADIENT_BITMAPS));
+        gCache = SkNEW_ARGS(SkGradientBitmapCache, (MAX_NUM_CACHED_GRADIENT_BITMAPS));
     }
     size_t size = count * sizeof(int32_t);
 
     if (!gCache->find(storage.get(), size, bitmap)) {
         // force our cahce32pixelref to be built
         (void)cache->getCache32();
         bitmap->setInfo(SkImageInfo::MakeN32Premul(kCache32Count, 1));
         bitmap->setPixelRef(cache->getCache32PixelRef());
 
         gCache->add(storage.get(), size, *bitmap);
@@ skipping 522 matching lines @@
             (*stops)[i] = stop;
             stop = i < outColors - 1 ? stop + random->nextUScalar1() * (1.f - stop) : 1.f;
         }
     }
     *tm = static_cast<SkShader::TileMode>(random->nextULessThan(SkShader::kTileModeCount));
 
     return outColors;
 }
 
 #endif