Make Website hashable so it can be deduplicated.

chrome/android/java/src/org/chromium/chrome/browser/preferences/website/WebsitePermissionsFetcher.java

Index: chrome/android/java/src/org/chromium/chrome/browser/preferences/website/WebsitePermissionsFetcher.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/preferences/website/WebsitePermissionsFetcher.java b/chrome/android/java/src/org/chromium/chrome/browser/preferences/website/WebsitePermissionsFetcher.java
index 3dd72b5b70cb9fb2de27c122f504e57aff595b2b..8641b0591a16a72b669c3e8d55f9a92fd4d2e779 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/preferences/website/WebsitePermissionsFetcher.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/preferences/website/WebsitePermissionsFetcher.java
@@ -29,13 +29,9 @@ public class WebsitePermissionsFetcher {
     }
 
     // This is a 1 <--> 1..N mapping between origin and Website.
-    // TODO(mvanouwerkerk): The Website class has no equals or hashCode methods so storing them in
-    // a HashSet is really confusing to readers of this code. There is no deduplication at all.
     private final Map<String, Set<Website>> mSitesByOrigin = new HashMap<>();
 
     // This is a 1 <--> 1..N mapping between host and Website.
-    // TODO(mvanouwerkerk): The Website class has no equals or hashCode methods so storing them in
-    // a HashSet is really confusing to readers of this code. There is no deduplication at all.
     private final Map<String, Set<Website>> mSitesByHost = new HashMap<>();
 
     // The callback to run when the permissions have been fetched.