NoStatePrefetch: update the fieldtrial_testing_config

chrome/android/javatests/src/org/chromium/chrome/browser/customtabs/CustomTabsConnectionTest.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/customtabs/CustomTabsConnectionTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/customtabs/CustomTabsConnectionTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/customtabs/CustomTabsConnectionTest.java
index 211100f19fb5d2a5a426ce9d68f1792e43da034f..96d4bc8667cd78c36fc07ce887d86f83ec89e448 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/customtabs/CustomTabsConnectionTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/customtabs/CustomTabsConnectionTest.java
@@ -155,6 +155,7 @@ public class CustomTabsConnectionTest {
     @SmallTest
     @Restriction(RESTRICTION_TYPE_NON_LOW_END_DEVICE)
     public void testPrerenderDestroysSpareRenderer() {
+        CustomTabsConnection.getInstance((Application) mAppContext).setForcePrerender(true);

[droger, 2017/04/24 11:02:12]

Do we need to set it back to false at the end, to avoid polluting other tests?

[pasko, 2017/04/24 12:40:26]

the forcing of prerender is a per-session (=connection) attribute, and
tearDown() calls into CustomTabsTestUtils.cleanupSessions(), should be enough to
avoid polluting ..

         final CustomTabsSessionToken token = assertWarmupAndMayLaunchUrl(null, URL, true);
         ThreadUtils.runOnUiThreadBlocking(new Runnable() {
             @Override
@@ -304,6 +305,7 @@ public class CustomTabsConnectionTest {
     @SmallTest
     @Restriction(RESTRICTION_TYPE_NON_LOW_END_DEVICE)
     public void testStillHighConfidenceMayLaunchUrlWithSeveralUrls() {
+        CustomTabsConnection.getInstance((Application) mAppContext).setForcePrerender(true);
         final CustomTabsSessionToken token =
                 CustomTabsSessionToken.createDummySessionTokenForTesting();
         Assert.assertTrue(mCustomTabsConnection.newSession(token));
@@ -350,6 +352,7 @@ public class CustomTabsConnectionTest {
     @Restriction(RESTRICTION_TYPE_NON_LOW_END_DEVICE)
     @RetryOnFailure
     public void testCanCancelPrerender() {
+        CustomTabsConnection.getInstance((Application) mAppContext).setForcePrerender(true);
         final CustomTabsSessionToken token = assertWarmupAndMayLaunchUrl(null, URL, true);
         ThreadUtils.runOnUiThreadBlocking(new Runnable() {
             @Override