Revert of SkRTConf: reduce functionality to what we use, increase simplicity

src/core/SkGraphics.cpp

Index: src/core/SkGraphics.cpp
diff --git a/src/core/SkGraphics.cpp b/src/core/SkGraphics.cpp
index 01b1432ef0345ae3d99422f799ba9ff0d6982b3d..d7022b770b7dea89058b1a66bca92dfd2c832b86 100644
--- a/src/core/SkGraphics.cpp
+++ b/src/core/SkGraphics.cpp
@@ -22,6 +22,7 @@
 #include "SkPixelRef.h"
 #include "SkRefCnt.h"
 #include "SkResourceCache.h"
+#include "SkRTConf.h"
 #include "SkScalerContext.h"
 #include "SkShader.h"
 #include "SkStream.h"
@@ -48,6 +49,15 @@
     // SkGraphics::Init() must be thread-safe and idempotent.
     SkCpu::CacheRuntimeFeatures();
     SkOpts::Init();
+
+#ifdef SK_DEBUG
+    skRTConfRegistry().possiblyDumpFile();
+    skRTConfRegistry().validate();
+    if (skRTConfRegistry().hasNonDefault()) {
+        SkDebugf("Non-default runtime configuration options:\n");
+        skRTConfRegistry().printNonDefault();
+    }
+#endif
 }
 
 ///////////////////////////////////////////////////////////////////////////////