Rename android_webview_apk and android_webview_test_apk

docs/android_cast_build_instructions.md

 # Checking out and building Cast for Android
 
 **Note**: it is **not possible** to build a binary functionally
 equivalent to a Chromecast. This is to build a single-page content
 embedder with similar functionality to Cast products.
 
 ## Instructions for Google Employees
 
 Are you a Google employee? See
 [go/building-android-cast](https://goto.google.com/building-android-cast) instead.
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 [Android WebView](https://developer.android.com/reference/android/webkit/WebView.html)
 is a system framework component. Since Android KitKat, it is implemented using
 Chromium code (based off the [content module](https://dev.chromium.org/developers/content-module)).
 It is possible to test modifications to WebView using a simple test shell. The
 WebView shell is a view with a URL bar at the top (see [code](https://code.google.com/p/chromium/codesearch#chromium/src/android_webview/test/shell/src/org/chromium/android_webview/test/AwTestContainerView.java))
 and is **independent** of the WebView **implementation in the Android system** (
 the WebView shell is essentially a standalone unbundled app).
 As drawback, the shell runs in non-production rendering mode only.
 
 ```shell
-ninja -C out/Release android_webview_apk
-build/android/adb_install_apk.py out/Release/apks/AndroidWebView.apk
+ninja -C out/Release webview_instrumentation_apk
+build/android/adb_install_apk.py out/Release/apks/WebViewInstrumentation.apk
 ```
 
 If, instead, you want to build the complete Android WebView framework component and test the effect of your chromium changes in other Android app using the WebView, you should follow the [Android AOSP + chromium WebView instructions](https://www.chromium.org/developers/how-tos/build-instructions-android-webview)
 
 ### Running
 
 Set [command line flags](https://www.chromium.org/developers/how-tos/run-chromium-with-flags) if necessary.
 
 For Content shell:
 
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 release of Chrome for Android (v25+) you can do the following steps.
 Note that in order to get your changes into the official release, you'll
 need to send your change for a codereview using the regular process for
 committing code to chromium.
 
 1.  Open Chrome on your Android device and visit chrome://version
 2.  Copy down the id listed next to "Build ID:"
 3.  Go to
     [http://storage.googleapis.com/chrome-browser-components/BUILD\_ID\_FROM\_STEP\_2/index.html](http://storage.googleapis.com/chrome-browser-components/BUILD_ID_FROM_STEP_2/index.html)
 4.  Download the listed files and follow the steps in the README.