Reland of Separate deferred startup into tasks.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
index 7f6684ddcbe0c2a700e46f9fc49deab2bf44a5da..79db5d3a5633a6546766bde73843a1e268c4078b 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
@@ -976,18 +976,18 @@ public class ChromeTabbedActivity extends ChromeActivity implements OverviewMode
 
     @Override
     protected void onDeferredStartup() {
-        try {
-            TraceEvent.begin("ChromeTabbedActivity.onDeferredStartup");
-            super.onDeferredStartup();
-
-            ActivityManager am = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
-            RecordHistogram.recordSparseSlowlyHistogram(
-                    "MemoryAndroid.DeviceMemoryClass", am.getMemoryClass());
+        super.onDeferredStartup();
+        DeferredStartupHandler.getInstance().addDeferredTask(new Runnable() {
+            @Override
+            public void run() {
+                ActivityManager am =
+                        (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
+                RecordHistogram.recordSparseSlowlyHistogram(
+                        "MemoryAndroid.DeviceMemoryClass", am.getMemoryClass());
 
-            AutocompleteController.nativePrefetchZeroSuggestResults();
-        } finally {
-            TraceEvent.end("ChromeTabbedActivity.onDeferredStartup");
-        }
+                AutocompleteController.nativePrefetchZeroSuggestResults();
+            }
+        });
     }
 
     private void createTabModelSelectorImpl(Bundle savedInstanceState) {