For #21921: add duration for some BrowserFragment lifecycle markers.

Here is a sample profile with all the new markers:
https://share.firefox.dev/3lCGoD2

app/src/main/java/org/mozilla/fenix/browser/BaseBrowserFragment.kt

@@ -134,6 +134,7 @@ import org.mozilla.fenix.components.toolbar.interactor.BrowserToolbarInteractor
 import org.mozilla.fenix.components.toolbar.interactor.DefaultBrowserToolbarInteractor
 import org.mozilla.fenix.databinding.FragmentBrowserBinding
 import org.mozilla.fenix.ext.secure
+import org.mozilla.fenix.perf.MarkersFragmentLifecycleCallbacks
 import org.mozilla.fenix.settings.biometric.BiometricPromptFeature
 import mozilla.components.feature.session.behavior.ToolbarPosition as MozacToolbarPosition
 
@@ -212,6 +213,9 @@ abstract class BaseBrowserFragment :
         container: ViewGroup?,
         savedInstanceState: Bundle?
     ): View {
+        // DO NOT ADD ANYTHING ABOVE THIS getProfilerTime CALL!
+        val profilerStartTime = requireComponents.core.engine.profiler?.getProfilerTime()
+
         customTabSessionId = requireArguments().getString(EXTRA_SESSION_ID)
 
         // Diagnostic breadcrumb for "Display already aquired" crash:
@@ -234,10 +238,17 @@ abstract class BaseBrowserFragment :
             )
         }
 
+        // DO NOT MOVE ANYTHING BELOW THIS addMarker CALL!
+        requireComponents.core.engine.profiler?.addMarker(
+            MarkersFragmentLifecycleCallbacks.MARKER_NAME, profilerStartTime, "BaseBrowserFragment.onCreateView",
+        )
         return binding.root
     }
 
     final override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        // DO NOT ADD ANYTHING ABOVE THIS getProfilerTime CALL!
+        val profilerStartTime = requireComponents.core.engine.profiler?.getProfilerTime()
+
         initializeUI(view)
 
         if (customTabSessionId == null) {
@@ -254,6 +265,11 @@ abstract class BaseBrowserFragment :
         }
 
         requireContext().accessibilityManager.addAccessibilityStateChangeListener(this)
+
+        // DO NOT MOVE ANYTHING BELOW THIS addMarker CALL!
+        requireComponents.core.engine.profiler?.addMarker(
+            MarkersFragmentLifecycleCallbacks.MARKER_NAME, profilerStartTime, "BaseBrowserFragment.onViewCreated",
+        )
     }
 
     private fun initializeUI(view: View) {

app/src/main/java/org/mozilla/fenix/perf/MarkersFragmentLifecycleCallbacks.kt

@@ -11,6 +11,7 @@ import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentManager
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import mozilla.components.concept.engine.Engine
+import org.mozilla.fenix.browser.BrowserFragment
 import org.mozilla.fenix.home.HomeFragment
 
 /**
@@ -83,7 +84,8 @@ class MarkersFragmentLifecycleCallbacks(
     override fun onFragmentViewCreated(fm: FragmentManager, f: Fragment, v: View, savedInstanceState: Bundle?) {
         if (shouldSkip() ||
             // These methods are manually instrumented with duration.
-            f is HomeFragment
+            f is HomeFragment ||
+            f is BrowserFragment // instrumented in BaseBrowserFragment.
         ) {
             return
         }