[Hera] Excise a bunch of document mode code

chrome/android/java/src/org/chromium/chrome/browser/document/IncognitoDocumentActivity.java

Index: chrome/android/java/src/org/chromium/chrome/browser/document/IncognitoDocumentActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/document/IncognitoDocumentActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/document/IncognitoDocumentActivity.java
index 12b68b0365426a1388211b4e628dc4053ffc5966..3badea70efcf9f0f0cadc3d4ae1757c3a7c05d6a 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/document/IncognitoDocumentActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/document/IncognitoDocumentActivity.java
@@ -4,98 +4,8 @@
 
 package org.chromium.chrome.browser.document;
 
-import android.annotation.TargetApi;
-import android.content.Context;
-import android.os.Build;
-import android.os.Bundle;
-
-import org.chromium.chrome.browser.cookies.CookiesFetcher;
-import org.chromium.chrome.browser.incognito.IncognitoNotificationManager;
-import org.chromium.content.browser.crypto.CipherFactory;
-import org.chromium.content.browser.crypto.CipherFactory.CipherDataObserver;
-
 /**
- *  {@link DocumentActivity} for incognito tabs.
+ * Deprecated, but kept around because it was exported in Chrome's Manifest.
  */
-@TargetApi(Build.VERSION_CODES.LOLLIPOP)
 public class IncognitoDocumentActivity extends DocumentActivity {
-    /**
-     * Responsible for observing when cipher data generation is complete and saving
-     * the new cipher data in the CipherKeyActivity.
-     */
-    private static class CipherKeySaver implements CipherDataObserver {
-        private final Context mContext;
-
-        public CipherKeySaver(Context context) {
-            mContext = context;
-            CipherFactory.getInstance().addCipherDataObserver(this);
-        }
-
-        @Override
-        public void onCipherDataGenerated() {
-            mContext.startActivity(
-                    CipherKeyActivity.createIntent(mContext, null, null));
-            CipherFactory.getInstance().removeCipherDataObserver(this);
-        }
-    }
-
-    private static CipherKeySaver sCipherKeySaver;
-
-    private static void maybeCreateCipherKeySaver(Context context) {
-        if (sCipherKeySaver == null && !CipherFactory.getInstance().hasCipher()) {
-            sCipherKeySaver = new CipherKeySaver(context);
-        }
-    }
-
-    @Override
-    protected boolean isIncognito() {
-        return true;
-    }
-
-    @Override
-    public void preInflationStartup() {
-        CipherFactory.getInstance().restoreFromBundle(getSavedInstanceState());
-        maybeCreateCipherKeySaver(this);
-        super.preInflationStartup();
-    }
-
-    @Override
-    public void onResume() {
-        super.onResume();
-        IncognitoNotificationManager.showIncognitoNotification();
-    }
-
-    @Override
-    public void onResumeWithNative() {
-        super.onResumeWithNative();
-        CookiesFetcher.restoreCookies(this);
-    }
-
-    @Override
-    public void onPauseWithNative() {
-        CookiesFetcher.persistCookies(this);
-        super.onPauseWithNative();
-    }
-
-    @Override
-    public void onSaveInstanceState(Bundle outState) {
-        super.onSaveInstanceState(outState);
-        CipherFactory.getInstance().saveToBundle(outState);
-
-        // Save out the URL that was originally used to spawn this activity because we don't pass it
-        // in through the Intent.
-        String initialUrl = determineInitialUrl(determineTabId());
-        outState.putString(KEY_INITIAL_URL, initialUrl);
-    }
-
-    @Override
-    protected String determineInitialUrl(int tabId) {
-        // Check if the URL was saved in the Bundle.
-        if (getSavedInstanceState() != null) {
-            String initialUrl = getSavedInstanceState().getString(KEY_INITIAL_URL);
-            if (initialUrl != null) return initialUrl;
-        }
-
-        return super.determineInitialUrl(tabId);
-    }
 }