Re-submit of AppLink implementation.

chrome/android/java/src/org/chromium/chrome/browser/preferences/ChromePreferenceManager.java

Index: chrome/android/java/src/org/chromium/chrome/browser/preferences/ChromePreferenceManager.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/preferences/ChromePreferenceManager.java b/chrome/android/java/src/org/chromium/chrome/browser/preferences/ChromePreferenceManager.java
index b7450d8611c563bd892a5db35e1bb5c3c8af0a9b..8745de3c32e256e18f1cecae89fade06d4184029 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/preferences/ChromePreferenceManager.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/preferences/ChromePreferenceManager.java
@@ -45,6 +45,7 @@ public class ChromePreferenceManager {
             "contextual_search_last_animation_time";
     private static final String ENABLE_CUSTOM_TABS = "enable_custom_tabs";
     private static final String HERB_FLAVOR_KEY = "herb_flavor";
+    private static final String APP_LINK_KEY = "applink.app_link_enabled";
 
     private static final String SUCCESS_UPLOAD_SUFFIX = "_crash_success_upload";
     private static final String FAILURE_UPLOAD_SUFFIX = "_crash_failure_upload";
@@ -339,6 +340,18 @@ public class ChromePreferenceManager {
         writeString(HERB_FLAVOR_KEY, flavor);
     }
 
+    /** Checks the cached value for the app link feature. */
+    public boolean getCachedAppLinkEnabled() {
+        return mSharedPreferences.getBoolean(APP_LINK_KEY, false);
+    }
+
+    /** Writes the cached value for whether app link is enabled. */
+    public void setCachedAppLinkEnabled(boolean isEnabled) {
+        SharedPreferences.Editor ed = mSharedPreferences.edit();
+        ed.putBoolean(APP_LINK_KEY, isEnabled);
+        ed.apply();
+    }
+
     /**
      * Writes the given int value to the named shared preference.
      *