Rename --enable-webapk command line flag to --enable-improved-a2hs

chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeWebApkHost.java

 // Copyright 2016 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.webapps;
 
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.os.StrictMode;
@@ skipping 51 matching lines @@
             return ChromePreferenceManager.getInstance(
                     ContextUtils.getApplicationContext()).getCachedWebApkRuntimeEnabled();
         } finally {
             StrictMode.setThreadPolicy(oldPolicy);
         }
     }
 
     /**
      * Show dialog warning user that "installation from unknown sources" is required by the WebAPK
      * experiment if:
-     * - The user toggled the --enable-webapk command line flag via chrome://flags
+     * - The user toggled the --enable-improved-a2hs command line flag via chrome://flags
      * AND
      * - WebAPKs are not disabled via variations kill switch.
      * Must be run prior to {@link cacheEnabledStateForNextLaunch}.
      */
     public static void launchWebApkRequirementsDialogIfNeeded(Context context) {
         // Show dialog on Canary & Dev. Installation via "unknown sources" is disabled via
         // variations on other channels.
         if (!ChromeVersionInfo.isCanaryBuild() && !ChromeVersionInfo.isDevBuild()) return;
 
         Context applicationContext = ContextUtils.getApplicationContext();
@@ skipping 22 matching lines @@
         }
 
         boolean wasEnabled = isEnabledInPrefs();
         boolean isEnabled = computeEnabled();
         if (isEnabled != wasEnabled) {
             Log.d(TAG, "WebApk setting changed (%s => %s)", wasEnabled, isEnabled);
             preferenceManager.setCachedWebApkRuntimeEnabled(isEnabled);
         }
     }
 
-    /** Returns whether the --enable-webapk command line flag is set */
+    /** Returns whether the --enable-improved-a2hs command line flag is set */
     private static boolean isCommandLineFlagSet() {
         return CommandLine.getInstance().hasSwitch(ChromeSwitches.ENABLE_WEBAPK);
     }
 
     /** Returns whether we should enable WebAPKs */
     private static boolean computeEnabled() {
         return isCommandLineFlagSet() && ChromeFeatureList.isEnabled(ChromeFeatureList.WEBAPKS);
     }
 
     /**
@@ skipping 28 matching lines @@
                     }
                 });
         builder.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
             @Override
             public void onClick(DialogInterface dialog, int id) {}
         });
         AlertDialog dialog = builder.create();
         dialog.show();
     }
 }