Big refactor moving most logic into DebugComponent

Summary: This adds very little (no?) new features and mostly just refactors code to live in a singular place. Instead of users having to worry about DebugComponent as well as the DebugInfo object and attaching it correctly to a tree now user's of the DebugComponent API only need to worry about a single class, greatly simplifying its usage.

Reviewed By: passy

Differential Revision: D5027780

fbshipit-source-id: 95a95b3572747aa2088f8f9b35a160257eb59269

Author: Emil Sjolander

java/com/facebook/yoga/YogaValue.java

@@ -44,4 +44,20 @@ public boolean equals(Object other) {
   public int hashCode() {
     return Float.floatToIntBits(value) + unit.intValue();
   }
+
+  @Override
+  public String toString() {
+    switch (unit) {
+      case UNDEFINED:
+        return "undefined";
+      case POINT:
+        return Float.toString(value);
+      case PERCENT:
+        return value + "%";
+      case AUTO:
+        return "auto";
+      default:
+        throw new IllegalStateException();
+    }
+  }
 }