weblayer: directory cleanup

moves weblayer/shell/android/javatests to
weblayer/browser/android/javatests

My plan is to move weblayer/browser/java
into this directory next.

BUG=none
TEST=none

Change-Id: If442c9ebe6204a26038585e4fa53875c866a1fc8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1910814
Commit-Queue: Scott Violet <sky@chromium.org>
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Cr-Commit-Position: refs/heads/master@{#714624}

diff --git a/BUILD.gn b/BUILD.gn
index 90c41d93..de1251f 100644
--- a/BUILD.gn
+++ b/BUILD.gn

@@ -200,6 +200,9 @@
       "//weblayer/shell:weblayer_shell",
       "//weblayer/test:weblayer_browsertests",
     ]
+    if (is_android) {
+      deps += [ "//weblayer/browser/android/javatests:weblayer_instrumentation_test_apk" ]
+    }
   }
 
   if (!is_ios && !is_android) {