Merge changes I8e81d244,If03ccac0,If8ec1887 into stable-2.8

* changes:
  Don't mention label abbreviation in search documentation
  Don't mention Verified as a default label in search documentation
  Minor fixes in dev-plugin documentation

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/config/DownloadScheme.java

diff --git a/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/config/DownloadScheme.java b/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/config/DownloadScheme.java
index 1a9e754..20eda97 100644
--- a/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/config/DownloadScheme.java
+++ b/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/config/DownloadScheme.java
@@ -29,6 +29,11 @@
   /** @return whether this scheme requires authentication */
   public abstract boolean isAuthRequired();
 
+  /** @return whether this scheme supports authentication */
+  public boolean isAuthSupported() {
+    return isAuthRequired();
+  }
+
   /** @return whether the download scheme is enabled */
   public abstract boolean isEnabled();
 }

gerrit-server/src/main/java/com/google/gerrit/server/change/ChangeJson.java

diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/change/ChangeJson.java b/gerrit-server/src/main/java/com/google/gerrit/server/change/ChangeJson.java
index d6ecc5e..f64e424 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/change/ChangeJson.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/change/ChangeJson.java
@@ -855,7 +855,7 @@
       }
 
       ChangeControl ctl = control(cd);
-      if (!scheme.isAuthRequired()
+      if (!scheme.isAuthSupported()
           && !ctl.forUser(anonymous).isPatchVisible(in, db.get())) {
         continue;
       }