Upstream WebAPK notification related code

chrome/common/chrome_switches.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/common/chrome_switches.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "build/build_config.h"
 
@@ skipping 539 matching lines @@
 const char kEnableThumbnailRetargeting[]   = "enable-thumbnail-retargeting";
 
 // Enables Alternate-Protocol when the port is user controlled (> 1024).
 const char kEnableUserAlternateProtocolPorts[] =
     "enable-user-controlled-alternate-protocol-ports";
 
 // Enables a new "web app" style frame for hosted apps (including bookmark
 // apps).
 const char kEnableWebAppFrame[] = "enable-web-app-frame";
 
+#if defined(OS_ANDROID)
+// Enables "Add to Home screen" in the app menu to generate WebAPKs. WebAPKs are
+// app-like home screen shortcuts.
+// - WebAPKs show up in the app list.
+// - Chrome supports deep linking to WebAPKs.

[Peter Beverloo, 2016/05/19 15:59:01]

With my command-line-switches-lister[1]-hat on, do lines 563 and 564 add value
to this explanation? This probably isn't the place to explain how WebAPKs differ
from Add to Homescreen ;)

[1] http://peter.sh/experiments/chromium-command-line-switches/

[pkotwicz, 2016/05/20 00:45:19]

You are right there are better places to document what WebAPKs do. Probably a
README file in chrome/android/webapk

I have been aware of the "command line switch list" web page for many years and
I have used it a lot. I think I got to know about it one or two weeks after I
started on the Chrome team. Thank you for maintaining the web page.

+const char kEnableWebApk[] = "enable-webapk";
+#endif
+
 // Enables Web Notification custom layouts.
 const char kEnableWebNotificationCustomLayouts[] =
     "enable-web-notification-custom-layouts";
 
 // Values for the kExtensionContentVerification flag.
 // See ContentVerifierDelegate::Mode for more explanation.
 const char kExtensionContentVerificationBootstrap[] = "bootstrap";
 const char kExtensionContentVerificationEnforceStrict[] = "enforce_strict";
 const char kExtensionContentVerificationEnforce[] = "enforce";
 
@@ skipping 793 matching lines @@
 
 // -----------------------------------------------------------------------------
 // DO NOT ADD YOUR CRAP TO THE BOTTOM OF THIS FILE.
 //
 // You were going to just dump your switches here, weren't you? Instead, please
 // put them in alphabetical order above, or in order inside the appropriate
 // ifdef at the bottom. The order should match the header.
 // -----------------------------------------------------------------------------
 
 }  // namespace switches