Reland: WTF: Implement explicit RefPtr::operator bool.

third_party/WebKit/Source/platform/graphics/paint/DrawingDisplayItem.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/graphics/paint/DrawingDisplayItem.h"
 
 #include "platform/graphics/GraphicsContext.h"
 #include "public/platform/WebDisplayItemList.h"
 #include "third_party/skia/include/core/SkPictureAnalyzer.h"
 
@@ skipping 13 matching lines @@
 }
 
 void DrawingDisplayItem::appendToWebDisplayItemList(const IntRect& visualRect, WebDisplayItemList* list) const
 {
     if (m_picture)
         list->appendDrawingItem(visualRect, toSkSp(m_picture));
 }
 
 bool DrawingDisplayItem::drawsContent() const
 {
-    return m_picture;
+    return m_picture.get();
 }
 
 void DrawingDisplayItem::analyzeForGpuRasterization(SkPictureGpuAnalyzer& analyzer) const
 {
     analyzer.analyzePicture(m_picture.get());
 }
 
 #ifndef NDEBUG
 void DrawingDisplayItem::dumpPropertiesAsDebugString(WTF::StringBuilder& stringBuilder) const
 {
@@ skipping 68 matching lines @@
         return bitmapIsAllZero(bitmap);
     }
     default:
         ASSERT_NOT_REACHED();
     }
     return false;
 }
 #endif // ENABLE(ASSERT)
 
 } // namespace blink