Add ChromeShellTestApk and other chrome/ test stuff

Adds these targets:
//chrome/android:chrome_javatests
//chrome/android:chrome_shell_test_java
//chrome/android:chrome_shell_test_apk
//chrome/android:chrome_sync_shell_test_apk
//chrome/android:uiautomator_tests_java
//chrome/android:uiautomator_tests
//chrome/test/android:chrome_java_test_support
//chrome/test/chromedriver/test/webview_shell:chromedriver_webview_shell_apk
//chrome/test/chromedriver/test/webview_shell:chromedriver_webview_shell_resources

depends on https://codereview.chromium.org/570203002/

TBR=ben
BUG=359249

Review URL: https://codereview.chromium.org/586383002

Cr-Commit-Position: refs/heads/master@{#299926}