Display user account name in password and passphrase activity prompt.

chrome/android/java/src/org/chromium/chrome/browser/sync/ProfileSyncService.java

Index: chrome/android/java/src/org/chromium/chrome/browser/sync/ProfileSyncService.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/sync/ProfileSyncService.java b/chrome/android/java/src/org/chromium/chrome/browser/sync/ProfileSyncService.java
index 7874dff69f02e25f669be4151ab65869aa158510..20ba33b05df6af8143243e5b3132fb30647daa2f 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/sync/ProfileSyncService.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/sync/ProfileSyncService.java
@@ -263,6 +263,11 @@ public class ProfileSyncService {
         return nativeGetSyncEnterCustomPassphraseBodyWithDateText(mNativeProfileSyncServiceAndroid);
     }
 
+    public String getCurrentSignedInAccountText() {
+        assert isSyncInitialized();
+        return nativeGetCurrentSignedInAccountText(mNativeProfileSyncServiceAndroid);
+    }
+
     public String getSyncEnterCustomPassphraseBodyText() {
         return nativeGetSyncEnterCustomPassphraseBodyText(mNativeProfileSyncServiceAndroid);
     }
@@ -517,6 +522,7 @@ public class ProfileSyncService {
             int nativeProfileSyncServiceAndroid);
     private native String nativeGetSyncEnterCustomPassphraseBodyWithDateText(
             int nativeProfileSyncServiceAndroid);
+    private native String nativeGetCurrentSignedInAccountText(int nativeProfileSyncServiceAndroid);
     private native String nativeGetSyncEnterCustomPassphraseBodyText(
             int nativeProfileSyncServiceAndroid);
     private native boolean nativeIsSyncKeystoreMigrationDone(int nativeProfileSyncServiceAndroid);