Remove ChromeActivity reference from PasswordCheckedLauncher

Only used like a regular Android activity.

Bug: 1123209
Change-Id: I3d68e4a3b9e984fa565249c40f03ea239c850b84
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2453797
Auto-Submit: Brandon Wylie <wylieb@chromium.org>
Reviewed-by: Ted Choc <tedchoc@chromium.org>
Commit-Queue: Ted Choc <tedchoc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#814468}

chrome/android/java/src/org/chromium/chrome/browser/DEPS

@@ -290,9 +290,6 @@ specific_include_rules = {
   "PasswordChangeLauncher\.java": [
     "+chrome/android/java/src/org/chromium/chrome/browser/app/ChromeActivity.java",
   ],
-  "PasswordCheckupLauncher\.java": [
-    "+chrome/android/java/src/org/chromium/chrome/browser/app/ChromeActivity.java",
-  ],
   "PasswordGenerationDialogBridge\.java": [
     "+chrome/android/java/src/org/chromium/chrome/browser/app/ChromeActivity.java",
   ],

chrome/android/java/src/org/chromium/chrome/browser/password_manager/PasswordCheckupLauncher.java

@@ -9,7 +9,6 @@ import android.net.Uri;
 
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.chrome.browser.AppHooks;
-import org.chromium.chrome.browser.app.ChromeActivity;
 import org.chromium.chrome.browser.flags.ChromeFeatureList;
 import org.chromium.chrome.browser.password_check.PasswordCheckFactory;
 import org.chromium.chrome.browser.password_check.PasswordCheckReferrer;
@@ -23,8 +22,7 @@ public class PasswordCheckupLauncher {
     private static void launchCheckupInAccountWithWindowAndroid(
             String checkupUrl, WindowAndroid windowAndroid) {
         if (windowAndroid.getContext().get() == null) return; // Window not available yet/anymore.
-        ChromeActivity activity = (ChromeActivity) windowAndroid.getActivity().get();
-        launchCheckupInAccountWithActivity(checkupUrl, activity);
+        launchCheckupInAccountWithActivity(checkupUrl, windowAndroid.getActivity().get());
     }
 
     @CalledByNative