[Custom Tabs]Add API for updating action button in service

chrome/android/java/src/android/support/customtabs/ICustomTabsService.aidl

Index: chrome/android/java/src/android/support/customtabs/ICustomTabsService.aidl
diff --git a/chrome/android/java/src/android/support/customtabs/ICustomTabsService.aidl b/chrome/android/java/src/android/support/customtabs/ICustomTabsService.aidl
index e2eeb981edab7b7271f3ce343ed92d0c1bcc2fb9..45565c024ea998e4929c5c6384f6fb4984ee8ded 100644
--- a/chrome/android/java/src/android/support/customtabs/ICustomTabsService.aidl
+++ b/chrome/android/java/src/android/support/customtabs/ICustomTabsService.aidl
@@ -20,4 +20,5 @@ interface ICustomTabsService {
     boolean mayLaunchUrl(in ICustomTabsCallback callback, in Uri url,
             in Bundle extras, in List<Bundle> otherLikelyBundles) = 3;
     Bundle extraCommand(String commandName, in Bundle args) = 4;
+    boolean updateVisuals(in ICustomTabsCallback callback, in Bundle bundle) = 5;
 }