Switch to faster enter/exit animations for herb tabs.

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

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser.document;
 
 import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.app.Notification;
 import android.app.SearchManager;
@@ skipping 387 matching lines @@
      * Handles launching a {@link CustomTabActivity}, which will sit on top of a client's activity
      * in the same task.
      */
     private void launchCustomTabActivity() {
         boolean handled = CustomTabActivity.handleInActiveContentIfNeeded(getIntent());
         if (handled) return;
 
         // Create and fire a launch intent.
         startActivity(createCustomTabActivityIntent(
                 this, getIntent(), !isCustomTabIntent(getIntent()) && mIsHerbIntent));
-        if (mIsHerbIntent) overridePendingTransition(R.anim.slide_in_up, R.anim.no_anim);
+        if (mIsHerbIntent) overridePendingTransition(R.anim.activity_open_enter, R.anim.no_anim);
     }
 
     @SuppressLint("InlinedApi")
     private void launchTabbedMode() {
         maybePrefetchDnsInBackground();
 
         Intent newIntent = new Intent(getIntent());
         String className = MultiWindowUtils.getInstance().getTabbedActivityForIntent(
                 newIntent, this).getName();
         newIntent.setClassName(getApplicationContext().getPackageName(), className);
@@ skipping 67 matching lines @@
         IntentHandler.ExternalAppId source =
                 IntentHandler.determineExternalIntentSource(getPackageName(), intent);
         if (intent.getPackage() == null && source != IntentHandler.ExternalAppId.CHROME) {
             int flagsOfInterest = Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_NEW_DOCUMENT;
             int maskedFlags = intent.getFlags() & flagsOfInterest;
             sIntentFlagsHistogram.record(maskedFlags);
         }
         MediaNotificationUma.recordClickSource(intent);
     }
 }