Adding host app data_dep for ios/web, ios/showcase

Follow up to CL 1949847, adding the data deps for host app for
* ios/web eg2_tests
* ios/showcase eg2_tests

Bug: 1019533
Change-Id: Idd71f6fe715356e1dd0100bae3361bce98e8fd76
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2042193
Commit-Queue: Jeff Yoon <jeffyoon@chromium.org>
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#741191}

ios/showcase/BUILD.gn

@@ -86,6 +86,7 @@ ios_eg2_test("ios_showcase_eg2tests_module") {
     "//ios/showcase/text_badge_view:eg2_tests",
   ]
   bundle_deps = [ "//ios/showcase/core/resources" ]
+  data_deps = [ ":ios_showcase_eg2tests" ]
 }
 
 ios_eg_test("ios_showcase_egtests") {

ios/web/shell/test/BUILD.gn

@@ -214,4 +214,6 @@ ios_eg2_test("ios_web_shell_eg2tests_module") {
     # Test support libraries.
     ":eg_tests+eg2",
   ]
+
+  data_deps = [ ":ios_web_shell_eg2tests" ]
 }