Oilpan: prefer ENABLE(OILPAN).

Source/core/css/CSSImageGeneratorValue.cpp

Index: Source/core/css/CSSImageGeneratorValue.cpp
diff --git a/Source/core/css/CSSImageGeneratorValue.cpp b/Source/core/css/CSSImageGeneratorValue.cpp
index f329ef8f3843b78709eafa1ea06c740e6dc777df..4c36cb20ad6e99392995ce7d068269be62bc22f4 100644
--- a/Source/core/css/CSSImageGeneratorValue.cpp
+++ b/Source/core/css/CSSImageGeneratorValue.cpp
@@ -101,9 +101,7 @@ Image* CSSImageGeneratorValue::getImage(LayoutObject* renderer, const IntSize& s
         SizeAndCount& sizeCount = it->value;
         IntSize oldSize = sizeCount.size;
         if (oldSize != size) {
-#if !ENABLE_OILPAN

[sof, 2015/02/20 12:20:49]

The #if here is from 

 
https://codereview.chromium.org/143403009/diff2/1:250001/Source/core/css/CSSI...

i.e., from the time of when the policy of how to handle these no-op protections
was being discussed & settled.

-            RefPtr<CSSImageGeneratorValue> protect(this);
-#endif
+            RefPtrWillBeRawPtr<CSSImageGeneratorValue> protect(this);
             removeClient(renderer);
             addClient(renderer, size);
         }