Change webapk packages and directory structure

webapk/shell_apk/AndroidManifest.xml

Index: webapk/shell_apk/AndroidManifest.xml
diff --git a/web_apks/minting_example/AndroidManifest.xml b/webapk/shell_apk/AndroidManifest.xml
similarity index 94%
rename from web_apks/minting_example/AndroidManifest.xml
rename to webapk/shell_apk/AndroidManifest.xml
index af9aac57de5d5c87c4ce6877fe049f6abaa860ce..21b8b1d9c010338493c4c5279c1548cb87264374 100644
--- a/web_apks/minting_example/AndroidManifest.xml
+++ b/webapk/shell_apk/AndroidManifest.xml
@@ -17,11 +17,11 @@
     <uses-permission-sdk-23 android:name="android.permission.RECORD_AUDIO"/>
 
     <application
-        android:name="org.chromium.minting.WebApkApplication"
+        android:name="org.chromium.webapk.shell_apk.WebApkApplication"
         android:icon="@drawable/app_icon"
         android:label="mintingapp"
         android:allowBackup="false" >
-        <activity android:name="org.chromium.minting.MainActivity"
+        <activity android:name="org.chromium.webapk.shell_apk.MainActivity"
                   android:theme="@android:style/Theme.Translucent.NoTitleBar">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
@@ -39,7 +39,7 @@
         <meta-data android:name="mac" android:value="{{ mac }}" />
         <meta-data android:name="scope" android:value="{{ scope }}" />
         <service
-            android:name="org.chromium.minting.WebApkServiceFactory"
+            android:name="org.chromium.webapk.shell_apk.WebApkServiceFactory"
             android:exported="true">
             <intent-filter>
               <action android:name="android.intent.action.MAIN" />