Remove CustomTab and have all CustomTabActivity using Tab

chrome/android/java/src/org/chromium/chrome/browser/ChromeActivity.java

Index: chrome/android/java/src/org/chromium/chrome/browser/ChromeActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ChromeActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/ChromeActivity.java
index cdf17a0b72dd73e36498a6f982ef795abd92083b..b7ee809df276198eba50a360b033303ac4d2401f 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ChromeActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ChromeActivity.java
@@ -71,7 +71,6 @@ import org.chromium.chrome.browser.compositor.layouts.content.TabContentManager;
 import org.chromium.chrome.browser.contextualsearch.ContextualSearchFieldTrial;
 import org.chromium.chrome.browser.contextualsearch.ContextualSearchManager;
 import org.chromium.chrome.browser.contextualsearch.ContextualSearchManager.ContextualSearchTabPromotionDelegate;
-import org.chromium.chrome.browser.customtabs.CustomTab;
 import org.chromium.chrome.browser.device.DeviceClassManager;
 import org.chromium.chrome.browser.dom_distiller.DistilledPagePrefsView;
 import org.chromium.chrome.browser.dom_distiller.ReaderModeActivityDelegate;
@@ -632,7 +631,7 @@ public abstract class ChromeActivity extends AsyncInitializationActivity
     }
 
     /**
-     * @return Whether the given activity contains a {@link CustomTab}.
+     * @return Whether the given activity contains a CustomTab.
      */
     public boolean isCustomTab() {
         return false;