Image decoding: Remove deprecated image caching code

Source/platform/graphics/test/MockDiscardablePixelRef.h

Index: Source/platform/graphics/test/MockDiscardablePixelRef.h
diff --git a/Source/platform/graphics/test/MockDiscardablePixelRef.h b/Source/platform/graphics/test/MockDiscardablePixelRef.h
deleted file mode 100644
index 18f633a596ee7957f08bb60db9d2c2bffc890529..0000000000000000000000000000000000000000
--- a/Source/platform/graphics/test/MockDiscardablePixelRef.h
+++ /dev/null
@@ -1,88 +0,0 @@
-/*
- * Copyright (C) 2013 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1.  Redistributions of source code must retain the above copyright
- *     notice, this list of conditions and the following disclaimer.
- * 2.  Redistributions in binary form must reproduce the above copyright
- *     notice, this list of conditions and the following disclaimer in the
- *     documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef MockDiscardablePixelRef_h
-
-#include "SkBitmap.h"
-#include "SkPixelRef.h"
-
-namespace blink {
-
-class MockDiscardablePixelRef : public SkPixelRef {
-public:
-    MockDiscardablePixelRef(const SkImageInfo& info, size_t rowbytes)
-        : SkPixelRef(info)
-        , m_rowBytes(rowbytes)
-        , discarded(false)
-    {
-        setURI("discardable");
-    }
-
-    ~MockDiscardablePixelRef() { }
-
-    void discard()
-    {
-        ASSERT(!m_lockedMemory);
-        discarded = true;
-    }
-
-    class Allocator : public SkBitmap::Allocator {
-    public:
-        virtual bool allocPixelRef(SkBitmap* dst, SkColorTable* ct) SK_OVERRIDE {
-            const SkImageInfo& info = dst->info();
-            if (kUnknown_SkColorType == info.colorType())
-                return false;
-            SkAutoTUnref<SkPixelRef> pr(new MockDiscardablePixelRef(info, dst->rowBytes()));
-            dst->setPixelRef(pr);
-            return true;
-        }
-    };
-
-protected:
-    virtual bool onNewLockPixels(LockRec* rec)
-    {
-        if (discarded)
-            return false;
-        m_lockedMemory = &discarded;
-        rec->fPixels = m_lockedMemory;
-        rec->fColorTable = 0;
-        rec->fRowBytes = m_rowBytes;
-        return true;
-    }
-
-    virtual void onUnlockPixels()
-    {
-        m_lockedMemory = 0;
-    }
-
-private:
-    void* m_lockedMemory;
-    size_t m_rowBytes;
-    bool discarded;
-};
-
-} // namespace blink
-
-#endif // MockDiscardablePixelRef_h