Add Signin_Impression_FromSettings user action

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

Index: chrome/android/java/src/org/chromium/chrome/browser/preferences/SignInPreference.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/preferences/SignInPreference.java b/chrome/android/java/src/org/chromium/chrome/browser/preferences/SignInPreference.java
index ec83e8f23df847a3c1f63537cb0e8cec0da01e12..e4f4cc0437ad0db37f0d165bd45178ffcdfc6354 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/preferences/SignInPreference.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/preferences/SignInPreference.java
@@ -14,6 +14,7 @@ import android.text.TextUtils;
 import android.util.AttributeSet;
 import android.view.View;
 
+import org.chromium.base.metrics.RecordUserAction;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.firstrun.FirstRunSignInProcessor;
 import org.chromium.chrome.browser.profiles.Profile;
@@ -141,6 +142,10 @@ public class SignInPreference extends Preference
                 return true;
             }
         });
+
+        if (account == null && enabled) {
+            RecordUserAction.record("Signin_Impression_FromSettings");
+        }
     }
 
     private void updateSyncStatusIcon() {