Fix DexLoaderTest#testLoadAfterDeleteCachedDexes() flakiness

chrome/android/webapk/shell_apk/javatests/canary_lib/BUILD.gn

Index: chrome/android/webapk/shell_apk/javatests/canary_lib/BUILD.gn
diff --git a/chrome/android/webapk/shell_apk/javatests/canary_lib/BUILD.gn b/chrome/android/webapk/shell_apk/javatests/canary_lib/BUILD.gn
index 6ec24f7f1528a30b5a47bcbb28e50a45309ac630..4a4eab4ed6619d4d98eeee93ae5d1e1f7329ddd3 100644
--- a/chrome/android/webapk/shell_apk/javatests/canary_lib/BUILD.gn
+++ b/chrome/android/webapk/shell_apk/javatests/canary_lib/BUILD.gn
@@ -9,8 +9,14 @@ android_library("canary_lib") {
   java_files = [ "src/org/chromium/webapk/shell_apk/test/canary/Canary.java" ]
 }
 
-# dex asset added to dex_optimizer_apk in order to test creating ClassLoader
+android_library("canary_lib2") {
+  dex_path = "$target_gen_dir/canary2.dex"
+  java_files = [ "src/org/chromium/webapk/shell_apk/test/canary/Canary2.java" ]
+}
+
+# dex assets added to dex_optimizer_apk in order to test creating ClassLoader
 # from .dex in remote APK.
+
 android_assets("canary_dex_asset") {
   sources = [
     "$target_gen_dir/canary.dex",
@@ -20,3 +26,13 @@ android_assets("canary_dex_asset") {
     ":canary_lib",
   ]
 }
+
+android_assets("canary_dex_asset2") {
+  sources = [
+    "$target_gen_dir/canary2.dex",
+  ]
+  disable_compression = true
+  deps = [
+    ":canary_lib2",
+  ]
+}