Tweak naming.

src/Avalonia.Base/PropertyStore/ValueStore.cs

@@ -274,11 +274,6 @@ namespace Avalonia.PropertyStore
             DictionaryPool<AvaloniaProperty, OldNewValue>.Release(values);
         }
 
-        public void FrameActivationChanged(IValueFrame frame)
-        {
-            ReevaluateEffectiveValues();
-        }
-
         /// <summary>
         /// Called by non-LocalValue binding entries to re-evaluate the effective value when the
         /// binding produces a new value.
@@ -363,6 +358,16 @@ namespace Avalonia.PropertyStore
             }
         }
 
+        /// <summary>
+        /// Called by an <see cref="IValueFrame"/> when its <see cref="IValueFrame.IsActive"/>
+        /// state changes.
+        /// </summary>
+        /// <param name="frame">The frame which produced the change.</param>
+        public void OnFrameActivationChanged(IValueFrame frame)
+        {
+            ReevaluateEffectiveValues();
+        }
+
         /// <summary>
         /// Called by the parent value store when its inheritance ancestor changes.
         /// </summary>

src/Avalonia.Base/Styling/StyleInstance.cs

@@ -68,7 +68,7 @@ namespace Avalonia.Styling
         void IStyleActivatorSink.OnNext(bool value, int tag)
         {
             if (!_isActivatorInitializing)
-                Owner?.FrameActivationChanged(this);
+                Owner?.OnFrameActivationChanged(this);
         }
     }
 }