Revert of Back PaintRecord with PaintOpBuffer instead of SkPicture

third_party/WebKit/Source/platform/graphics/paint/DisplayItem.h

Index: third_party/WebKit/Source/platform/graphics/paint/DisplayItem.h
diff --git a/third_party/WebKit/Source/platform/graphics/paint/DisplayItem.h b/third_party/WebKit/Source/platform/graphics/paint/DisplayItem.h
index d5f344e605f4b55ad17dfdc5ccdad84f39636a49..a9afcd15e089043f595870ddfccb7224403b832c 100644
--- a/third_party/WebKit/Source/platform/graphics/paint/DisplayItem.h
+++ b/third_party/WebKit/Source/platform/graphics/paint/DisplayItem.h
@@ -16,6 +16,8 @@
 #include "platform/wtf/text/StringBuilder.h"
 #include "platform/wtf/text/WTFString.h"
 #endif
+
+class SkPictureGpuAnalyzer;
 
 namespace blink {
 
@@ -335,7 +337,7 @@
   virtual bool DrawsContent() const { return false; }
 
   // Override to implement specific analysis strategies.
-  virtual int NumberOfSlowPaths() const { return 0; }
+  virtual void AnalyzeForGpuRasterization(SkPictureGpuAnalyzer&) const {}
 
 #ifndef NDEBUG
   static WTF::String TypeAsDebugString(DisplayItem::Type);