[Android] Make pre-native setup safe in RequestGenerator

This CL makes the pre-native setup and get account number safe inside
RequestGenerator.
This is a revert of the try-catch part of the CL
https://crrev.com/c/2080231.

Bug: 1061951
Change-Id: I6944a7e2acf1d295285b153ee2572d8bde9ad26d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2106053
Commit-Queue: Alice Wang <aliceywang@chromium.org>
Reviewed-by: Boris Sazonov <bsazonov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#750937}

chrome/android/java/src/org/chromium/chrome/browser/omaha/RequestGenerator.java

@@ -16,6 +16,7 @@ import androidx.annotation.VisibleForTesting;
 import org.xmlpull.v1.XmlSerializer;
 
 import org.chromium.base.BuildInfo;
+import org.chromium.base.Log;
 import org.chromium.base.task.PostTask;
 import org.chromium.chrome.browser.identity.SettingsSecureBasedIdentificationGenerator;
 import org.chromium.chrome.browser.identity.UniqueIdentificationGeneratorFactory;
@@ -202,9 +203,14 @@ public abstract class RequestGenerator {
         // RequestGenerator may be invoked from JobService or AlarmManager (through OmahaService),
         // so have to make sure AccountManagerFacade instance is initialized.
         // TODO(waffles@chromium.org): Ideally, this should be asynchronous.
-        PostTask.runSynchronously(UiThreadTaskTraits.DEFAULT,
-                () -> ProcessInitializationHandler.getInstance().initializePreNative());
-        int numAccounts = AccountManagerFacade.get().tryGetGoogleAccounts().size();
+        int numAccounts = 0;
+        try {
+            PostTask.runSynchronously(UiThreadTaskTraits.DEFAULT,
+                    () -> ProcessInitializationHandler.getInstance().initializePreNative());
+            numAccounts = AccountManagerFacade.get().tryGetGoogleAccounts().size();
+        } catch (Exception e) {
+            Log.e(TAG, "Cannot get number of accounts.", e);
+        }
         return numAccounts < 2 ? numAccounts : 2;
     }