Ensure that isSyncable is set when Chrome sync is enabled.

sync/android/java/src/org/chromium/sync/AndroidSyncSettings.java

Index: sync/android/java/src/org/chromium/sync/AndroidSyncSettings.java
diff --git a/sync/android/java/src/org/chromium/sync/AndroidSyncSettings.java b/sync/android/java/src/org/chromium/sync/AndroidSyncSettings.java
index d24366c76a0486f9e61228bfc971a0a9c9766cf4..ccdee86ca3dff3a33737e28d06e32ddea2490476 100644
--- a/sync/android/java/src/org/chromium/sync/AndroidSyncSettings.java
+++ b/sync/android/java/src/org/chromium/sync/AndroidSyncSettings.java
@@ -193,8 +193,9 @@ public class AndroidSyncSettings {
 
     private void setChromeSyncEnabled(boolean value) {
         synchronized (mLock) {
-            if (value == mChromeSyncEnabled || mAccount == null) return;
+            if (mAccount == null) return;
             ensureSyncable();
+            if (value == mChromeSyncEnabled) return;
             mChromeSyncEnabled = value;
 
             StrictMode.ThreadPolicy oldPolicy = StrictMode.allowThreadDiskWrites();