diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/gpu/GrAllocPool.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/gpu/GrAllocPool.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,116 @@
+/*
+ * Copyright 2010 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "GrAllocPool.h"
+
+#include "GrTypes.h"
+
+#define GrAllocPool_MIN_BLOCK_SIZE      ((size_t)128)
+
+struct GrAllocPool::Block {
+    Block*  fNext;
+    char*   fPtr;
+    size_t  fBytesFree;
+    size_t  fBytesTotal;
+
+    static Block* Create(size_t size, Block* next) {
+        SkASSERT(size >= GrAllocPool_MIN_BLOCK_SIZE);
+
+        Block* block = (Block*)sk_malloc_throw(sizeof(Block) + size);
+        block->fNext = next;
+        block->fPtr = (char*)block + sizeof(Block);
+        block->fBytesFree = size;
+        block->fBytesTotal = size;
+        return block;
+    }
+
+    bool canAlloc(size_t bytes) const {
+        return bytes <= fBytesFree;
+    }
+
+    void* alloc(size_t bytes) {
+        SkASSERT(bytes <= fBytesFree);
+        fBytesFree -= bytes;
+        void* ptr = fPtr;
+        fPtr += bytes;
+        return ptr;
+    }
+
+    size_t release(size_t bytes) {
+        SkASSERT(bytes > 0);
+        size_t free = GrMin(bytes, fBytesTotal - fBytesFree);
+        fBytesFree += free;
+        fPtr -= free;
+        return bytes - free;
+    }
+
+    bool empty() const { return fBytesTotal == fBytesFree; }
+};
+
+///////////////////////////////////////////////////////////////////////////////
+
+GrAllocPool::GrAllocPool(size_t blockSize) {
+    fBlock = NULL;
+    fMinBlockSize = GrMax(blockSize, GrAllocPool_MIN_BLOCK_SIZE);
+    SkDEBUGCODE(fBlocksAllocated = 0;)
+}
+
+GrAllocPool::~GrAllocPool() {
+    this->reset();
+}
+
+void GrAllocPool::reset() {
+    this->validate();
+
+    Block* block = fBlock;
+    while (block) {
+        Block* next = block->fNext;
+        sk_free(block);
+        block = next;
+    }
+    fBlock = NULL;
+    SkDEBUGCODE(fBlocksAllocated = 0;)
+}
+
+void* GrAllocPool::alloc(size_t size) {
+    this->validate();
+
+    if (!fBlock || !fBlock->canAlloc(size)) {
+        size_t blockSize = GrMax(fMinBlockSize, size);
+        fBlock = Block::Create(blockSize, fBlock);
+        SkDEBUGCODE(fBlocksAllocated += 1;)
+    }
+    return fBlock->alloc(size);
+}
+
+void GrAllocPool::release(size_t bytes) {
+    this->validate();
+
+    while (bytes && NULL != fBlock) {
+        bytes = fBlock->release(bytes);
+        if (fBlock->empty()) {
+            Block* next = fBlock->fNext;
+            sk_free(fBlock);
+            fBlock = next;
+            SkDEBUGCODE(fBlocksAllocated -= 1;)
+        }
+    }
+}
+
+#ifdef SK_DEBUG
+
+void GrAllocPool::validate() const {
+    Block* block = fBlock;
+    int count = 0;
+    while (block) {
+        count += 1;
+        block = block->fNext;
+    }
+    SkASSERT(fBlocksAllocated == count);
+}
+
+#endif