style: Rename the EBoxPack enum values to be prefixed.

third_party/WebKit/Source/core/style/ComputedStyle.h

Index: third_party/WebKit/Source/core/style/ComputedStyle.h
diff --git a/third_party/WebKit/Source/core/style/ComputedStyle.h b/third_party/WebKit/Source/core/style/ComputedStyle.h
index 3f83fda7b7c448ca3ee45395eb3299d45a80ae22..929b742a6a0ea87a367331f70d48c270d277fe57 100644
--- a/third_party/WebKit/Source/core/style/ComputedStyle.h
+++ b/third_party/WebKit/Source/core/style/ComputedStyle.h
@@ -1728,7 +1728,7 @@ public:
     static EBoxDirection initialBoxDirection() { return BNORMAL; }
     static EBoxLines initialBoxLines() { return SINGLE; }
     static EBoxOrient initialBoxOrient() { return HORIZONTAL; }
-    static EBoxPack initialBoxPack() { return Start; }
+    static EBoxPack initialBoxPack() { return BoxPackStart; }
     static float initialBoxFlex() { return 0.0f; }
     static unsigned initialBoxFlexGroup() { return 1; }
     static unsigned initialBoxOrdinalGroup() { return 1; }