Add patheffects to debugger printout

src/effects/Sk2DPathEffect.cpp

Index: src/effects/Sk2DPathEffect.cpp
diff --git a/src/effects/Sk2DPathEffect.cpp b/src/effects/Sk2DPathEffect.cpp
index 2ad202ae85d772acb875e1c9e579b6ebe26a8f18..1df69a51fc4b95fda7cb8d5e3c382524e6eee675 100644
--- a/src/effects/Sk2DPathEffect.cpp
+++ b/src/effects/Sk2DPathEffect.cpp
@@ -73,6 +73,15 @@ void Sk2DPathEffect::flatten(SkWriteBuffer& buffer) const {
     buffer.writeMatrix(fMatrix);
 }
 
+#ifndef SK_IGNORE_TO_STRING
+void Sk2DPathEffect::toString(SkString* str) const {
+    str->appendf("(matrix: %.2f %.2f %.2f %.2f %.2f %.2f %.2f %.2f %.2f)",
+            fMatrix[SkMatrix::kMScaleX], fMatrix[SkMatrix::kMSkewX],  fMatrix[SkMatrix::kMTransX],
+            fMatrix[SkMatrix::kMSkewY],  fMatrix[SkMatrix::kMScaleY], fMatrix[SkMatrix::kMTransY],
+            fMatrix[SkMatrix::kMPersp0], fMatrix[SkMatrix::kMPersp1], fMatrix[SkMatrix::kMPersp2]);
+}
+#endif
+
 ///////////////////////////////////////////////////////////////////////////////
 
 bool SkLine2DPathEffect::filterPath(SkPath* dst, const SkPath& src,
@@ -109,6 +118,16 @@ void SkLine2DPathEffect::flatten(SkWriteBuffer &buffer) const {
     buffer.writeScalar(fWidth);
 }
 
+
+#ifndef SK_IGNORE_TO_STRING
+void SkLine2DPathEffect::toString(SkString* str) const {
+    str->appendf("SkLine2DPathEffect: (");
+    this->INHERITED::toString(str);
+    str->appendf("width: %f", fWidth);
+    str->appendf(")");
+}
+#endif
+
 ///////////////////////////////////////////////////////////////////////////////
 
 SkPath2DPathEffect::SkPath2DPathEffect(const SkMatrix& m, const SkPath& p)
@@ -132,3 +151,12 @@ void SkPath2DPathEffect::next(const SkPoint& loc, int u, int v,
                               SkPath* dst) const {
     dst->addPath(fPath, loc.fX, loc.fY);
 }
+
+#ifndef SK_IGNORE_TO_STRING
+void SkPath2DPathEffect::toString(SkString* str) const {
+    str->appendf("SkPath2DPathEffect: (");
+    this->INHERITED::toString(str);
+    // TODO: print out path information
+    str->appendf(")");
+}
+#endif