Revert of PaintChunk::id

third_party/WebKit/Source/platform/testing/PaintPrinters.cpp

Index: third_party/WebKit/Source/platform/testing/PaintPrinters.cpp
diff --git a/third_party/WebKit/Source/platform/testing/PaintPrinters.cpp b/third_party/WebKit/Source/platform/testing/PaintPrinters.cpp
index 8cd0db3ff0ce751ac912a7db9e59b467b8929bcf..abd63837c086ebcba29cc8e762556c7b738960c6 100644
--- a/third_party/WebKit/Source/platform/testing/PaintPrinters.cpp
+++ b/third_party/WebKit/Source/platform/testing/PaintPrinters.cpp
@@ -45,19 +45,7 @@
 {
     *os << "PaintChunk(begin=" << chunk.beginIndex
         << ", end=" << chunk.endIndex
-        << ", id=";
-    if (!chunk.id) {
-        *os << "null";
-    } else {
-        *os << "(" << &chunk.id->client << ", ";
-#ifndef NDEBUG
-        *os << DisplayItem::typeAsDebugString(chunk.id->type);
-#else
-        *os << static_cast<int>(chunk.id->type);
-#endif
-        *os << ")";
-    }
-    *os << ", props=";
+        << ", props=";
     PrintTo(chunk.properties, os);
     *os << ", bounds=";
     PrintTo(chunk.bounds, os);