Remove fprintf() from core/editing/.

third_party/WebKit/Source/core/editing/Position.cpp

Index: third_party/WebKit/Source/core/editing/Position.cpp
diff --git a/third_party/WebKit/Source/core/editing/Position.cpp b/third_party/WebKit/Source/core/editing/Position.cpp
index c7c0a81a8ab1bffa7da96ed81d3d66e83049917d..71bfac1a8b9ec11f3e4e88a574006f08de283190 100644
--- a/third_party/WebKit/Source/core/editing/Position.cpp
+++ b/third_party/WebKit/Source/core/editing/Position.cpp
@@ -680,7 +680,7 @@ void showTree(const blink::Position* pos)
     if (pos)
         pos->showTreeForThis();
     else
-        fprintf(stderr, "Cannot showTree for (nil)\n");
+        LOG(INFO) << "Cannot showTree for <null>";
 }
 
 #endif