Matrix convolution bounds fix; affectsTransparentBlack fixes.

include/core/SkImageFilter.h

Index: include/core/SkImageFilter.h
diff --git a/include/core/SkImageFilter.h b/include/core/SkImageFilter.h
index d90df29c8bfeaabfba887417c17b6e7f8447e83b..909a2f82840e93c2c6842a3407ef3b67ec3eb893 100644
--- a/include/core/SkImageFilter.h
+++ b/include/core/SkImageFilter.h
@@ -199,12 +199,7 @@ public:
      *  replaced by the returned colorfilter. i.e. the two effects will affect drawing in the
      *  same way.
      */
-    bool asAColorFilter(SkColorFilter** filterPtr) const {
-        return this->countInputs() > 0 &&
-               NULL == this->getInput(0) &&
-               !this->affectsTransparentBlack() &&
-               this->isColorFilterNode(filterPtr);
-    }
+    bool asAColorFilter(SkColorFilter** filterPtr) const;
 
     /**
      *  Returns the number of inputs this filter will accept (some inputs can
@@ -240,7 +235,7 @@ public:
     virtual void computeFastBounds(const SkRect&, SkRect*) const;
 
     // Can this filter DAG compute the resulting bounds of an object-space rectangle?
-    bool canComputeFastBounds() const;
+    virtual bool canComputeFastBounds() const;
 
     /**
      *  If this filter can be represented by another filter + a localMatrix, return that filter,
@@ -410,14 +405,6 @@ protected:
     virtual bool asFragmentProcessor(GrFragmentProcessor**, GrTexture*, const SkMatrix&,
                                      const SkIRect& bounds) const;
 
-    /**
-     * Returns true if this filter can cause transparent black pixels to become
-     * visible (ie., alpha > 0). The default implementation returns false. This
-     * function is non-recursive, i.e., only queries this filter and not its
-     * inputs.
-     */
-    virtual bool affectsTransparentBlack() const;
-
 private:
     friend class SkGraphics;
     static void PurgeCache();