Omnibox Should Not Start Spare Renderer in Incognito

Bug: 730587
Change-Id: I7985b8ce16d4d63af643cd084993e2589e563ab7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2425204Reviewed-by: Ryan Sturm <ryansturm@chromium.org>
Reviewed-by: Tomasz Wiszkowski <ender@google.com>
Commit-Queue: Robert Ogden <robertogden@chromium.org>
Cr-Commit-Position: refs/heads/master@{#809589}

chrome/android/java/src/org/chromium/chrome/browser/omnibox/suggestions/AutocompleteController.java

@@ -178,7 +178,7 @@ public class AutocompleteController {
         // process does not impact the Omnibox initialization. Note that there's a small chance the
         // renderer will be started after the next navigation if the delay is too long, but the
         // spare renderer will probably get used anyways by a later navigation.
-        if (!NewTabPage.isNTPUrl(url)
+        if (!profile.isOffTheRecord() && !NewTabPage.isNTPUrl(url)
                 && ChromeFeatureList.isEnabled(ChromeFeatureList.OMNIBOX_SPARE_RENDERER)) {
             PostTask.postDelayedTask(UiThreadTaskTraits.BEST_EFFORT,
                     ()