Add auto sign in slider in Clank settings.

content/public/android/java/src/org/chromium/content/common/ContentSwitches.java

Index: content/public/android/java/src/org/chromium/content/common/ContentSwitches.java
diff --git a/content/public/android/java/src/org/chromium/content/common/ContentSwitches.java b/content/public/android/java/src/org/chromium/content/common/ContentSwitches.java
index a671db7c3545b628a1257d664eb70ff96f73ff22..d40be243491839841b67b0938bef35e8bb44ba91 100644
--- a/content/public/android/java/src/org/chromium/content/common/ContentSwitches.java
+++ b/content/public/android/java/src/org/chromium/content/common/ContentSwitches.java
@@ -66,6 +66,9 @@ public abstract class ContentSwitches {
     // Enable mouse hover emulation by holding your finger just over the screen.
     public static final String ENABLE_TOUCH_HOVER = "enable-touch-hover";
 
+    // Native switch kEnableCredentialManagerAPI
+    public static final String ENABLE_CREDENTIAL_MANAGER_API = "enable-credential-manager-api";
+
     // Prevent instantiation.
     private ContentSwitches() {}
 }