Remove title resources when they are no longer used

ui/android/java/src/org/chromium/ui/resources/dynamics/DynamicResourceLoader.java

Index: ui/android/java/src/org/chromium/ui/resources/dynamics/DynamicResourceLoader.java
diff --git a/ui/android/java/src/org/chromium/ui/resources/dynamics/DynamicResourceLoader.java b/ui/android/java/src/org/chromium/ui/resources/dynamics/DynamicResourceLoader.java
index 6145cae461ea8e7769e32e8b4aa0d19a1b86ac76..4e724626fb182422fe07f7ad3aa99b6e8c4c429f 100644
--- a/ui/android/java/src/org/chromium/ui/resources/dynamics/DynamicResourceLoader.java
+++ b/ui/android/java/src/org/chromium/ui/resources/dynamics/DynamicResourceLoader.java
@@ -43,6 +43,7 @@ public class DynamicResourceLoader extends ResourceLoader {
      */
     public void unregisterResource(int resId) {
         mDynamicResources.remove(resId);
+        notifyResourceUnregistered(resId);
     }
 
     /**
@@ -66,4 +67,4 @@ public class DynamicResourceLoader extends ResourceLoader {
         // Not implemented.
         assert false : "Preloading dynamic resources isn't supported.";
     }
-}
+}