Change webapk packages and directory structure

webapk/libs/common/src/org/chromium/webapk/lib/common/WebApkConstants.java

Index: webapk/libs/common/src/org/chromium/webapk/lib/common/WebApkConstants.java
diff --git a/web_apks/minting_example/libs/common/org/chromium/minting/lib/common/WebApkConstants.java b/webapk/libs/common/src/org/chromium/webapk/lib/common/WebApkConstants.java
similarity index 86%
rename from web_apks/minting_example/libs/common/org/chromium/minting/lib/common/WebApkConstants.java
rename to webapk/libs/common/src/org/chromium/webapk/lib/common/WebApkConstants.java
index a0828be0a801266cb59d5b4c20fcfd32c780c1c9..6ea017452fb10f81ffcabea25aa32db267cee829 100644
--- a/web_apks/minting_example/libs/common/org/chromium/minting/lib/common/WebApkConstants.java
+++ b/webapk/libs/common/src/org/chromium/webapk/lib/common/WebApkConstants.java
@@ -2,15 +2,15 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-package org.chromium.minting.lib.common;
+package org.chromium.webapk.lib.common;
 
 /**
  * This class stores constants that need to be in org.minting.
  */
 public final class WebApkConstants {
-    public static final String WEBAPK_MAIN_ACTIVITY = "org.chromium.minting.MainActivity";
+    public static final String WEBAPK_MAIN_ACTIVITY = "org.chromium.webapk.shell_apk.MainActivity";
 
     public static final String WEB_APK_ID_PREFIX = "webapk:";
 
     public static final String WEB_APK_PACKAGE_PREFIX = "org.chromium.minting";
-}
+}