Allow toString capability to be toggled independent of developer mode.

This change is motivated by the desire to see the text information in the debugger when not in developer mode. It is structured so user's can disable it if the capability is not wanted.

R=bsalomon@google.com

Author: robertphillips@google.com

Review URL: https://codereview.chromium.org/197763008

git-svn-id: http://skia.googlecode.com/svn/trunk@13795 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/effects/SkPerlinNoiseShader.cpp b/src/effects/SkPerlinNoiseShader.cpp
index e28227d..8abbdbd 100644
--- a/src/effects/SkPerlinNoiseShader.cpp
+++ b/src/effects/SkPerlinNoiseShader.cpp
@@ -1322,7 +1322,7 @@
 
 #endif
 
-#ifdef SK_DEVELOPER
+#ifndef SK_IGNORE_TO_STRING
 void SkPerlinNoiseShader::toString(SkString* str) const {
     str->append("SkPerlinNoiseShader: (");