Migrate WTF::Vector::append() to ::push_back() [part 2 of N]

third_party/WebKit/Source/core/animation/InterpolationEffect.h

Index: third_party/WebKit/Source/core/animation/InterpolationEffect.h
diff --git a/third_party/WebKit/Source/core/animation/InterpolationEffect.h b/third_party/WebKit/Source/core/animation/InterpolationEffect.h
index f8f0351f9629045930595e309dc60a8c29593c96..392fb4a958fadfb130c92c03e9ba9d163914b59d 100644
--- a/third_party/WebKit/Source/core/animation/InterpolationEffect.h
+++ b/third_party/WebKit/Source/core/animation/InterpolationEffect.h
@@ -40,9 +40,9 @@ class CORE_EXPORT InterpolationEffect {
                         double end,
                         double applyFrom,
                         double applyTo) {
-    m_interpolations.append(InterpolationRecord(std::move(interpolation),
-                                                std::move(easing), start, end,
-                                                applyFrom, applyTo));
+    m_interpolations.push_back(InterpolationRecord(std::move(interpolation),
+                                                   std::move(easing), start,
+                                                   end, applyFrom, applyTo));
   }
 
   void addInterpolationsFromKeyframes(