[DFM] Defer ModuleUtil.recordModuleAvailability() call to onFinishNativeInitialization().

Previously, ModuleUtil.recordModuleAvailability() was called from
ChromeApplication.attachBaseContext(). A side-effect of MU.rMA() is that
it initializes SplitCompat. However, for yet-to-be determined reason,
this early initialization causes failure downstream in
ChromeContentBrowserClient, so that if a DevUI page is loaded as the
active page, restarting Chrome would cause it to fail to load!

This CL alleviates the problem by deferring the MU.rMA() call to
ChromeBrowserInitializer.onFinishNativeInitialization(), thereby
avoiding initializing SplitCompat too early, while still recording
module metrics at start-up.

Bug: 1036753
Change-Id: I21c02dc957f494fb76c959c772a6f77db8b933a9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2003253Reviewed-by: Peter Wen <wnwen@chromium.org>
Reviewed-by: Yaron Friedman <yfriedman@chromium.org>
Commit-Queue: Peter Wen <wnwen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#732158}

chrome/android/java/src/org/chromium/chrome/browser/ChromeApplication.java

@@ -117,10 +117,6 @@ public class ChromeApplication extends Application {
             ApplicationStatus.registerApplicationStateListener(
                     ChromeApplication::updateMemoryPressurePolling);
 
-            // Record via UMA all modules that have been requested and are currently installed. This
-            // will tell us the install penetration of each module over time.
-            ModuleUtil.recordModuleAvailability();
-
             // Set Chrome factory for mapping BackgroundTask classes to TaskIds.
             ChromeBackgroundTaskFactory.setAsDefault();
         }

chrome/android/java/src/org/chromium/chrome/browser/init/ChromeBrowserInitializer.java

@@ -415,6 +415,11 @@ public class ChromeBrowserInitializer {
         FeatureUtilities.cacheNativeFlagsForServiceManagerOnlyMode();
 
         ModuleUtil.recordStartupTime();
+
+        // Record via UMA all modules that have been requested and are currently installed. This
+        // will tell us the install penetration of each module over time.
+        // Side effect: SplitCompat is initialized.
+        ModuleUtil.recordModuleAvailability();
     }
 
     private ActivityStateListener createActivityStateListener() {