DiskReadViolation in Firebase Performance during Activity#onResume #7392 (#7449)

As reported in #7340, RemoteConfig interactions are removed from
AppStartTrace (RemoteConfig is no longer supported, thus is safe to
delete).

---------

Co-authored-by: Tejas Deshpande <tdeshpande@google.com>

Author: OOS93

firebase-perf/CHANGELOG.md

@@ -1,5 +1,7 @@
 # Unreleased
 
+- [fixed] Fixed StrictMode DiskReadViolation prompted by AppStartTrace setup. [#7340]
+
 # 22.0.3
 
 - [changed] Bumped dependency on OkHTTP to version 4.12.0 from version 3.12.13. If your app depends

firebase-perf/src/main/java/com/google/firebase/perf/config/ConfigResolver.java

@@ -820,35 +820,22 @@ public double getFragmentSamplingRate() {
     return config.getDefault();
   }
 
-  /** Returns if _experiment_app_start_ttid should be captured. */
+  /**
+   * Returns if _experiment_app_start_ttid should be captured. This experiment is disabled.
+   * Therefore, interactions with Remote Config and the cached layer are no longer necessary,
+   * preventing unnecessary StrictMode DiskReadViolation penalties.
+   * {@see https://github.com/firebase/firebase-android-sdk/issues/7340}
+   */
   public boolean getIsExperimentTTIDEnabled() {
-    // Order of precedence is:
-    // 1. If the value exists in Android Manifest, return this value.
-    // 2. If the value exists through Firebase Remote Config, cache and return this value.
-    // 3. If the value exists in device cache, return this value.
-    // 4. Otherwise, return default value.
     ExperimentTTID config = ExperimentTTID.getInstance();
 
-    // 1. Reads value in Android Manifest (it is set by developers during build time).
+    // Reads value in Android Manifest (it is set by developers during build time).
     Optional<Boolean> metadataValue = getMetadataBoolean(config);
     if (metadataValue.isAvailable()) {
       return metadataValue.get();
     }
 
-    // 2. Reads value from Firebase Remote Config, saves this value in cache layer if valid.
-    Optional<Boolean> rcValue = getRemoteConfigBoolean(config);
-    if (rcValue.isAvailable()) {
-      deviceCacheManager.setValue(config.getDeviceCacheFlag(), rcValue.get());
-      return rcValue.get();
-    }
-
-    // 3. Reads value from cache layer.
-    Optional<Boolean> deviceCacheValue = getDeviceCacheBoolean(config);
-    if (deviceCacheValue.isAvailable()) {
-      return deviceCacheValue.get();
-    }
-
-    // 4. Returns default value if there is no valid value from above approaches.
+    // Returns default value if there is no valid value from above approaches.
     return config.getDefault();
   }