Move SkDecodingImageGenerator.h to include/

src/lazy/SkDiscardableMemoryPool.h

-/*
- * Copyright 2013 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef SkDiscardableMemoryPool_DEFINED
-#define SkDiscardableMemoryPool_DEFINED
-
-#include "SkDiscardableMemory.h"
-
-#ifndef SK_LAZY_CACHE_STATS
-    #ifdef SK_DEBUG
-        #define SK_LAZY_CACHE_STATS 1
-    #else
-        #define SK_LAZY_CACHE_STATS 0
-    #endif
-#endif
-
-/**
- *  An implementation of Discardable Memory that manages a fixed-size
- *  budget of memory.  When the allocated memory exceeds this size,
- *  unlocked blocks of memory are purged.  If all memory is locked, it
- *  can exceed the memory-use budget.
- */
-class SkDiscardableMemoryPool : public SkDiscardableMemory::Factory {
-public:
-    virtual ~SkDiscardableMemoryPool() { }
-
-    virtual size_t getRAMUsed() = 0;
-    virtual void setRAMBudget(size_t budget) = 0;
-    virtual size_t getRAMBudget() = 0;
-
-    /** purges all unlocked DMs */
-    virtual void dumpPool() = 0;
-
-    #if SK_LAZY_CACHE_STATS
-    /**
-     * These two values are a count of the number of successful and
-     * failed calls to SkDiscardableMemory::lock() for all DMs managed
-     * by this pool.
-     */
-    virtual int getCacheHits() = 0;
-    virtual int getCacheMisses() = 0;
-    virtual void resetCacheHitsAndMisses() = 0;
-    #endif
-
-    /**
-     *  This non-global pool can be used for unit tests to verify that
-     *  the pool works.
-     *  Without mutex, will be not be thread safe.
-     */
-    static SkDiscardableMemoryPool* Create(
-            size_t size, SkBaseMutex* mutex = NULL);
-};
-
-/**
- *  Returns (and creates if needed) a threadsafe global
- *  SkDiscardableMemoryPool.
- */
-SkDiscardableMemoryPool* SkGetGlobalDiscardableMemoryPool();
-
-#if !defined(SK_DEFAULT_GLOBAL_DISCARDABLE_MEMORY_POOL_SIZE)
-#define SK_DEFAULT_GLOBAL_DISCARDABLE_MEMORY_POOL_SIZE (128 * 1024 * 1024)
-#endif
-
-#endif  // SkDiscardableMemoryPool_DEFINED