[Android] Implement tests for SyncErrorCardPreference

This cl adds render tests for different types of sync errors in
SyncErrorCardPreference.

Bug: 1107420
Change-Id: I3ebc308932eadb677310ea041559bb54bbb1765c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2353255
Commit-Queue: Tanmoy Mollik <triploblastic@chromium.org>
Reviewed-by: Marc Treib <treib@chromium.org>
Reviewed-by: Alice Wang <aliceywang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#811273}

chrome/android/chrome_test_java_sources.gni

@@ -539,6 +539,7 @@ chrome_test_java_sources = [
   "javatests/src/org/chromium/chrome/browser/sync/OpenTabsTest.java",
   "javatests/src/org/chromium/chrome/browser/sync/SyncAndServicesSettingsTest.java",
   "javatests/src/org/chromium/chrome/browser/sync/SyncAndServicesSettingsWithFakeProfileSyncServiceTest.java",
+  "javatests/src/org/chromium/chrome/browser/sync/SyncErrorCardPreferenceTest.java",
   "javatests/src/org/chromium/chrome/browser/sync/SyncTest.java",
   "javatests/src/org/chromium/chrome/browser/sync/SyncTestRule.java",
   "javatests/src/org/chromium/chrome/browser/sync/TypedUrlsTest.java",

chrome/android/javatests/src/org/chromium/chrome/browser/sync/FakeProfileSyncService.java

@@ -25,6 +25,7 @@ public class FakeProfileSyncService extends ProfileSyncService {
     private boolean mTrustedVaultKeyRequired;
     private boolean mTrustedVaultKeyRequiredForPreferredDataTypes;
     private boolean mEncryptEverythingEnabled;
+    private boolean mRequiresClientUpgrade;
     private Set<Integer> mChosenTypes = new HashSet<>();
     private boolean mCanSyncFeatureStart;
     @GoogleServiceAuthError.State
@@ -139,4 +140,13 @@ public class FakeProfileSyncService extends ProfileSyncService {
     public void setCanSyncFeatureStart(boolean canSyncFeatureStart) {
         mCanSyncFeatureStart = canSyncFeatureStart;
     }
+
+    @Override
+    public boolean requiresClientUpgrade() {
+        return mRequiresClientUpgrade;
+    }
+
+    public void setRequiresClientUpgrade(boolean requiresClientUpgrade) {
+        mRequiresClientUpgrade = requiresClientUpgrade;
+    }
 }