Revert of Re-enable DataReductionPromoInfoBar tests and fix flakiness

chrome/android/java/src/org/chromium/chrome/browser/infobar/DataReductionPromoInfoBar.java

Index: chrome/android/java/src/org/chromium/chrome/browser/infobar/DataReductionPromoInfoBar.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/infobar/DataReductionPromoInfoBar.java b/chrome/android/java/src/org/chromium/chrome/browser/infobar/DataReductionPromoInfoBar.java
index 06e05ea2dd6f1033309a4802a2265125198b76f3..5828ef4e7a5830bbf4fc0b7fcb19f9412fece11f 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/infobar/DataReductionPromoInfoBar.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/infobar/DataReductionPromoInfoBar.java
@@ -9,7 +9,6 @@
 import android.content.pm.PackageManager.NameNotFoundException;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
-import android.os.StrictMode;
 
 import org.chromium.base.CommandLine;
 import org.chromium.base.ThreadUtils;
@@ -42,7 +41,6 @@
     private static String sText;
     private static String sPrimaryButtonText;
     private static String sSecondaryButtonText;
-
     /**
      * Launch the data reduction infobar promo, if it needs to be displayed.
      *
@@ -82,16 +80,7 @@
         String freOrSecondRunVersion =
                 DataReductionPromoUtils.getDisplayedFreOrSecondRunPromoVersion();
 
-        Calendar releaseDateOfM48Stable = null;
-
-        // Temporarily allowing disk access. TODO: Fix. See http://crbug.com/577185
-        StrictMode.ThreadPolicy oldPolicy = StrictMode.allowThreadDiskReads();
-        try {
-            releaseDateOfM48Stable = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
-        } finally {
-            StrictMode.setThreadPolicy(oldPolicy);
-        }
-
+        Calendar releaseDateOfM48Stable = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
         releaseDateOfM48Stable.setTime(Date.valueOf(M48_STABLE_RELEASE_DATE));
         long packageInstallTime = getPackageInstallTime(context);