Cleanup: Remove unused enable-instant-extended-api flag

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

Index: chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
index 36c99355f99b19d569e91cbeb5154be31cb2711c..742042e982461f87c66af858eb4f72c297d2fc83 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
@@ -525,10 +525,6 @@ public class ChromeTabbedActivity extends ChromeActivity implements OverviewMode
         try {
             TraceEvent.begin("ChromeTabbedActivity.initializeUI");
 
-            CommandLine commandLine = CommandLine.getInstance();
-
-            commandLine.appendSwitch(ContentSwitches.ENABLE_INSTANT_EXTENDED_API);
-
             CompositorViewHolder compositorViewHolder = getCompositorViewHolder();
             if (DeviceFormFactor.isTablet(this)) {
                 boolean enableTabSwitcher =