Set maximum output size for scaled-image-cache images

src/core/SkScaledImageCache.h

Index: src/core/SkScaledImageCache.h
diff --git a/src/core/SkScaledImageCache.h b/src/core/SkScaledImageCache.h
index fe072306d383f44eec7554724f4c3d8b94ae9fdf..d2f31d68b161a52dcdf97b99543a3c2a50f7929d 100644
--- a/src/core/SkScaledImageCache.h
+++ b/src/core/SkScaledImageCache.h
@@ -64,6 +64,9 @@ public:
     static size_t GetByteLimit();
     static size_t SetByteLimit(size_t newLimit);
 
+    static size_t SetSingleAllocationByteLimit(size_t);
+    static size_t GetSingleAllocationByteLimit();
+
     static SkBitmap::Allocator* GetAllocator();
 
     /**
@@ -148,6 +151,13 @@ public:
     size_t getByteLimit() const { return fByteLimit; }
 
     /**
+     *  This is respected by SkBitmapProcState::possiblyScaleImage.
+     *  0 is no maximum at all; this is the default.
+     *  setSingleAllocationByteLimit() returns the previous value.
+     */
+    size_t setSingleAllocationByteLimit(size_t maximumAllocationSize);
+    size_t getSingleAllocationByteLimit() const;
+    /**
      *  Set the maximum number of bytes available to this cache. If the current
      *  cache exceeds this new value, it will be purged to try to fit within
      *  this new limit.
@@ -177,6 +187,7 @@ private:
 
     size_t  fBytesUsed;
     size_t  fByteLimit;
+    size_t  fSingleAllocationByteLimit;
     int     fCount;
 
     Rec* findAndLock(uint32_t generationID, SkScalar sx, SkScalar sy,