Bug 1100773 patch 2 - Convert style rule List methods to use fprintf_stderr. r=heycam

Note that getting decent logcat output on Android and B2G requires not
splitting lines of output across multiple fprintf_stderr calls.

dom/html/HTMLBodyElement.cpp

@@ -171,10 +171,11 @@ BodyRule::MapRuleInfoInto(nsRuleData* aData)
 /* virtual */ void
 BodyRule::List(FILE* out, int32_t aIndent) const
 {
+  nsAutoCString indent;
   for (int32_t index = aIndent; --index >= 0; ) {
-    fputs("  ", out);
+    indent.AppendLiteral("  ");
   }
-  fputs("[body rule] {}\n", out);
+  fprintf_stderr(out, "%s[body rule] {}\n", indent.get());
 }
 #endif