[Chromeshine] Change compile flag to target canary/dev only

Bug: 925337
Change-Id: I23a38ee1649aedd693c7bb39c5b63774a7962910
Reviewed-on: https://chromium-review.googlesource.com/c/1447831Reviewed-by: Sky Malice <skym@chromium.org>
Commit-Queue: Patrick Noland <pnoland@chromium.org>
Cr-Commit-Position: refs/heads/master@{#629532}

chrome/android/java/src/org/chromium/chrome/browser/usage_stats/features.gni

@@ -3,7 +3,9 @@
 # found in the LICENSE file.
 
 import("//build/config/android/config.gni")
+import("//chrome/android/channel.gni")
 
 declare_args() {
-  enable_usage_stats = android_sdk_release == "q"
+  enable_usage_stats = android_channel == "default" ||
+                       android_channel == "canary" || android_channel == "dev"
 }