[android_webview] Rename AndroidWebView* -> Aw*.

android_webview/test/shell/AndroidManifest.xml

 <?xml version="1.0" encoding="utf-8"?>
 
 <!-- Copyright 2013 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.
 -->
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="org.chromium.android_webview.shell">
 
   <application android:name="org.chromium.android_webview.shell.AwShellApplication"
       android:label="AwShellApplication" android:hardwareAccelerated="false">
     <activity android:name="org.chromium.android_webview.shell.AwShellActivity"
         android:label="Android WebView Test Shell">
       <intent-filter>
         <action android:name="android.intent.action.MAIN" />
         <category android:name="android.intent.category.LAUNCHER" />
       </intent-filter>
     </activity>
-    <activity android:name="org.chromium.android_webview.test.AndroidWebViewTestRunnerActivity"
-        android:label="AndroidWebViewTestRunnerActivity">
+    <activity android:name="org.chromium.android_webview.test.AwTestRunnerActivity"
+        android:label="AwTestRunnerActivity">
       <intent-filter>
         <action android:name="android.intent.action.MAIN" />
         <category android:name="android.intent.category.FRAMEWORK_INSTRUMENTATION_TEST" />
       </intent-filter>
     </activity>
   </application>
 
   <!-- TODO(joth): Change minSdkVersion to 16 when crbug/161864 lands. -->
   <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="17" />
   <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
   <uses-permission android:name="android.permission.INTERNET"/>
   <uses-permission android:name="android.permission.WAKE_LOCK"/>
 </manifest>