1 files changed, 7 insertions, 0 deletions
diff --git a/Source/WebCore/css/StyleSheetContents.cpp b/Source/WebCore/css/StyleSheetContents.cpp
index e7ce81eaa..2f07fce83 100644
--- a/Source/WebCore/css/StyleSheetContents.cpp
+++ b/Source/WebCore/css/StyleSheetContents.cpp
@@ -435,6 +435,10 @@ static bool childRulesHaveFailedOrCanceledSubresources(const Vector<RefPtr<Style
             if (childRulesHaveFailedOrCanceledSubresources(static_cast<const StyleRuleRegion*>(rule)->childRules()))
                 return true;
             break;
+        case StyleRuleBase::Host:
+            if (childRulesHaveFailedOrCanceledSubresources(static_cast<const StyleRuleHost*>(rule)->childRules()))
+                return true;
+            break;
         case StyleRuleBase::Import:
             ASSERT_NOT_REACHED();
         case StyleRuleBase::Page:
@@ -442,6 +446,9 @@ static bool childRulesHaveFailedOrCanceledSubresources(const Vector<RefPtr<Style
         case StyleRuleBase::Unknown:
         case StyleRuleBase::Charset:
         case StyleRuleBase::Keyframe:
+#if ENABLE(CSS_DEVICE_ADAPTATION)
+        case StyleRuleBase::Viewport:
+#endif
             break;
         }
     }