Fuchsia: Enable packages in chromecast builds.

Fuchsia packages were not generated with is_chromecast=true. The problem
with library loading has been fixed, so there is no reason not to
generate packages anymore.

TBR=dpranke@chromium.org

Bug: 810069
Change-Id: I5ab66414bab4c6e9eab8c5dd12360656ba5e7d44
Reviewed-on: https://chromium-review.googlesource.com/1099995
Commit-Queue: Sergey Ulanov <sergeyu@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Reviewed-by: Kevin Marshall <kmarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#567107}

build/config/fuchsia/rules.gni

@@ -126,11 +126,6 @@ template("fuchsia_executable_runner") {
       ":${_gen_runner_target}",
       ":${_pkg_target}",
     ]
-
-    # Disable packaging for Chromecast builds. (https://crbug.com/810069)
-    if (is_chromecast) {
-      deps -= [ ":${_pkg_target}" ]
-    }
   }
 
   generate_runner_script(_archive_target) {

testing/test.gni

@@ -262,11 +262,6 @@ template("test") {
         ":$_gen_runner_target",
         ":$_pkg_target",
       ]
-
-      # Disable packaging for Chromecast builds. (https://crbug.com/810069)
-      if (is_chromecast) {
-        deps -= [ ":${_pkg_target}" ]
-      }
     }
 
     # Makes the script which invokes the executable.