[Slimming Paint] Allow 3D transforms of different types.

Source/platform/graphics/paint/DisplayItem.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 "config.h"
 #include "platform/graphics/paint/DisplayItem.h"
 
 namespace blink {
 
 #ifndef NDEBUG
@@ skipping 79 matching lines @@
     case DisplayItem::ClipPopupListBoxFrame: return "ClipPopupListBoxFrame";
     case DisplayItem::ClipSelectionImage: return "ClipSelectionImage";
     case DisplayItem::PageWidgetDelegateClip: return "PageWidgetDelegateClip";
     case DisplayItem::TransparencyClip: return "TransparencyClip";
     default:
         ASSERT_NOT_REACHED();
         return "Unknown";
     }
 }
 
+static String transform3DTypeAsDebugString(DisplayItem::Type type)
+{
+    switch (type) {
+    case DisplayItem::Transform3DElementTransform: return "Transform3DElementTransform";
+    default:
+        ASSERT_NOT_REACHED();
+        return "Unknown";
+    }
+}
+
 WTF::String DisplayItem::typeAsDebugString(Type type)
 {
     if (isDrawingType(type))
         return drawingTypeAsDebugString(type);
     if (isCachedType(type))
         return "Cached" + drawingTypeAsDebugString(cachedTypeToDrawingType(type));
     if (isClipType(type))
         return clipTypeAsDebugString(type);
     if (isEndClipType(type))
         return "End" + clipTypeAsDebugString(endClipTypeToClipType(type));
 
     PAINT_PHASE_BASED_DEBUG_STRINGS(FloatClip);
     if (isEndFloatClipType(type))
         return "End" + typeAsDebugString(endFloatClipTypeToFloatClipType(type));
 
     PAINT_PHASE_BASED_DEBUG_STRINGS(Scroll);
     if (isEndScrollType(type))
         return "End" + typeAsDebugString(endScrollTypeToScrollType(type));
 
+    if (isTransform3DType(type))
+        return transform3DTypeAsDebugString(type);
+    if (isEndTransform3DType(type))
+        return "End" + transform3DTypeAsDebugString(endTransform3DTypeToTransform3DType(type));
+
     PAINT_PHASE_BASED_DEBUG_STRINGS(SubtreeCached);
     PAINT_PHASE_BASED_DEBUG_STRINGS(BeginSubtree);
     PAINT_PHASE_BASED_DEBUG_STRINGS(EndSubtree);
 
     switch (type) {
     case BeginFilter: return "BeginFilter";
     case EndFilter: return "EndFilter";
     case BeginCompositing: return "BeginCompositing";
     case EndCompositing: return "EndCompositing";
     case BeginTransform: return "BeginTransform";
     case EndTransform: return "EndTransform";
-    case BeginTransform3D: return "BeginTransform3D";
-    case EndTransform3D: return "EndTransform3D";
     case BeginClipPath: return "BeginClipPath";
     case EndClipPath: return "EndClipPath";
     default:
         ASSERT_NOT_REACHED();
         return "Unknown";
     }
 }
 
 WTF::String DisplayItem::asDebugString() const
 {
@@ skipping 14 matching lines @@
     stringBuilder.append("type: \"");
     stringBuilder.append(typeAsDebugString(type()));
     stringBuilder.append('"');
     if (m_id.scopeContainer)
         stringBuilder.append(String::format(", scope: \"%p,%d\"", m_id.scopeContainer, m_id.scopeId));
 }
 
 #endif
 
 } // namespace blink