Merge 114487 - Skia OOM error when upscaling small subsets of images by large quantities

Source/WebCore/platform/graphics/skia/NativeImageSkia.cpp

Index: Source/WebCore/platform/graphics/skia/NativeImageSkia.cpp
===================================================================
--- Source/WebCore/platform/graphics/skia/NativeImageSkia.cpp	(revision 114488)
+++ Source/WebCore/platform/graphics/skia/NativeImageSkia.cpp	(working copy)
@@ -127,6 +127,11 @@
     if (!isDataComplete())
         return false;
 
+    // If the destination bitmap is excessively large, we'll never allow caching.
+    static const unsigned long long kLargeBitmapSize = 4096ULL * 4096ULL;
+    if ((static_cast<unsigned long long>(destWidth) * static_cast<unsigned long long>(destHeight)) > kLargeBitmapSize)
+        return false;
+
     // If the destination bitmap is small, we'll always allow caching, since
     // there is not very much penalty for computing it and it may come in handy.
     static const int kSmallBitmapSize = 4096;