Added LayerTreeHostImpl::layerTreeAsJson which serializes a layer tree

cc/nine_patch_layer_impl.cc

Index: cc/nine_patch_layer_impl.cc
diff --git a/cc/nine_patch_layer_impl.cc b/cc/nine_patch_layer_impl.cc
index 46a8af270a21b6da23fdd29030d9890af4264e70..d715fe68c473eee4284f9c8a1ee012909c52b466 100644
--- a/cc/nine_patch_layer_impl.cc
+++ b/cc/nine_patch_layer_impl.cc
@@ -5,6 +5,7 @@
 #include "nine_patch_layer_impl.h"
 
 #include "base/stringprintf.h"
+#include "base/values.h"
 #include "cc/quad_sink.h"
 #include "cc/texture_draw_quad.h"
 #include "ui/gfx/rect_f.h"
@@ -163,4 +164,18 @@ void NinePatchLayerImpl::dumpLayerProperties(std::string* str, int indent) const
     LayerImpl::dumpLayerProperties(str, indent);
 }
 
+base::DictionaryValue* NinePatchLayerImpl::layerTreeAsJson() const
+{
+    base::DictionaryValue* result = LayerImpl::layerTreeAsJson();
+
+    base::ListValue* list = new base::ListValue;
+    list->AppendInteger(m_imageAperture.origin().x());
+    list->AppendInteger(m_imageAperture.origin().y());
+    list->AppendInteger(m_imageAperture.size().width());
+    list->AppendInteger(m_imageAperture.size().height());
+    result->Set("ImageAperture", list);
+
+    return result;
+}
+
 }