Backed out changeset cf561cad85f1 (bug 1380133)

layout/style/nsStyleContext.cpp

@@ -459,6 +459,37 @@ nsStyleContext::CalcStyleDifference(nsStyleContext* aNewContext,
                                      aRelevantStructs);
 }
 
+class MOZ_STACK_CLASS FakeStyleContext
+{
+public:
+  explicit FakeStyleContext(const ServoComputedValues* aComputedValues)
+    : mComputedValues(aComputedValues) {}
+
+  nsStyleContext* GetStyleIfVisited() {
+    // Bug 1364484: Figure out what to do here for Stylo visited values.  We can
+    // get the visited computed values:
+    // RefPtr<ServoComputedValues> visitedComputedValues =
+    //   Servo_ComputedValues_GetVisitedStyle(mComputedValues).Consume();
+    // But what's the best way to create the nsStyleContext?
+    return nullptr;
+  }
+
+  #define STYLE_STRUCT(name_, checkdata_cb_)                                  \
+  const nsStyle##name_ * Style##name_() {                                     \
+    return mComputedValues->GetStyle##name_();                                \
+  }                                                                           \
+  const nsStyle##name_ * ThreadsafeStyle##name_() {                           \
+    return mComputedValues->GetStyle##name_();                                \
+  }
+  #include "nsStyleStructList.h"
+  #undef STYLE_STRUCT
+
+  const ServoComputedValues* ComputedValues() { return mComputedValues; }
+
+private:
+  const ServoComputedValues* MOZ_NON_OWNING_REF mComputedValues;
+};
+
 namespace mozilla {
 
 void