Add toString methods to SkImageFilter-derived classes

src/core/SkPaint.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkPaint.h"
 #include "SkAnnotation.h"
 #include "SkAutoKern.h"
@@ skipping 2142 matching lines @@
     SkDrawLooper* looper = this->getLooper();
     if (looper) {
         str->append("<dt>DrawLooper:</dt><dd>");
         looper->toString(str);
         str->append("</dd>");
     }
 
     SkImageFilter* imageFilter = this->getImageFilter();
     if (imageFilter) {
         str->append("<dt>ImageFilter:</dt><dd>");
+        imageFilter->toString(str);
         str->append("</dd>");
     }
 
     SkAnnotation* annotation = this->getAnnotation();
     if (annotation) {
         str->append("<dt>Annotation:</dt><dd>");
         str->append("</dd>");
     }
 
     str->append("<dt>Color:</dt><dd>0x");
@@ skipping 209 matching lines @@
 }
 
 uint32_t SkPaint::getHash() const {
     // We're going to hash 10 pointers and 7 32-bit values, finishing up with fBitfields,
     // so fBitfields should be 10 pointers and 6 32-bit values from the start.
     SK_COMPILE_ASSERT(offsetof(SkPaint, fBitfields) == 10 * sizeof(void*) + 6 * sizeof(uint32_t),
                       SkPaint_notPackedTightly);
     return SkChecksum::Murmur3(reinterpret_cast<const uint32_t*>(this),
                                offsetof(SkPaint, fBitfields) + sizeof(fBitfields));
 }