Add support for webapk without runtimeHost

build/android/lint/suppressions.xml

 <?xml version="1.0" encoding="utf-8"?>
 <lint>
   <!--
 STOP! It looks like you want to suppress some lint errors:
 - Have you tried identifing the offending patch?
   Ask the author for a fix and/or revert the patch.
 - It is preferred to add suppressions in the code instead of
   sweeping it under the rug here. See:
 
     http://developer.android.com/tools/debugging/improving-w-lint.html
@@ skipping 415 matching lines @@
     <!-- TODO(crbug.com/635567): Fix this properly. -->
     <ignore regexp="content/shell/android/shell_apk/res/layout/content_shell_activity.xml"/>
     <!-- TODO(crbug.com/635567): Fix this properly. -->
     <ignore regexp="content/shell/android/linker_test_apk/res/layout/test_activity.xml"/>
     <!-- TODO(crbug.com/635567): Fix this properly. -->
     <ignore regexp="content/shell/android/shell_apk/res/values/strings.xml"/>
   </issue>
   <issue id="UseCompoundDrawables">
     <!-- Upscaling 24dp to 48dp doesn't work as expected with a TextView compound drawable. -->
     <ignore regexp="chrome/android/java/res/layout/photo_picker_bitmap_view.xml"/>
+    <ignore regexp="chrome/android/webapk/shell_apk/res/layout/choose_host_browser_dialog_list.xml"/>

[agrieve, 2017/06/05 20:34:20]

Would using tools:ignore= work for suppressing this?
http://tools.android.com/tips/lint/suppressing-lint-warnings

Generally better to put the suppressions inline

[Xi Han, 2017/06/05 20:43:50]

Thanks! Didn't know this before.

   </issue>
   <issue id="UselessParent">
     <ignore regexp="android_webview/tools/system_webview_shell/apk/res/layout/activity_webview_browser.xml"/>
     <ignore regexp="chrome/android/java/res/layout/data_usage_breakdown.xml"/>
     <ignore regexp="chromecast/internal"/>
     <ignore regexp="tools/android/kerberos/SpnegoAuthenticator/res/layout/activity_account_authenticator.xml"/>
   </issue>
   <issue id="UsesMinSdkAttributes" severity="Error">
     <ignore regexp="AndroidManifest.xml"/>
   </issue>
   <issue id="ValidFragment" severity="Error">
     <ignore regexp="chrome/android/java/src/org/chromium/chrome/browser/media/router/BaseMediaRouteDialogManager.java"/>
     <ignore regexp="chrome/android/java/src/org/chromium/chrome/browser/media/router/MediaRouteChooserDialogManager.java"/>
     <ignore regexp="chrome/android/java/src/org/chromium/chrome/browser/media/router/MediaRouteControllerDialogManager.java"/>
     <ignore regexp="chrome/android/java/src/org/chromium/chrome/browser/preferences/privacy/OtherFormsOfHistoryDialogFragment.java"/>
     <ignore regexp="media/capture/content/android/java/src/org/chromium/media/ScreenCapture.java"/>
   </issue>
   <issue id="ViewConstructor" severity="ignore"/>
   <issue id="VisibleForTests" severity="Error">
     <ignore regexp="chrome/android/javatests"/>
     <ignore regexp="/test/"/>
   </issue>
   <issue id="WrongCall" severity="ignore"/>
   <issue id="WrongConstant">
     <ignore regexp="chrome/android/java/src/org/chromium/chrome/browser/SSLClientCertificateRequest.java"/>
     <ignore regexp="chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorDialog.java"/>
     <ignore regexp="chrome/android/java/src/org/chromium/chrome/browser/signin/SigninAndSyncView.java"/>
   </issue>
 </lint>