Add browser tests for permission leaks between incognito and regular.

We currently don't have extensive tests on java side which checks
any leakage of data across activities.

This CL adds browser tests to check permission leaks.

Bug: 1035770
Change-Id: If5148dead41c8dbda7b1885f48acaf16b8fe90a9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2111095
Commit-Queue: Rohit Agarwal <roagarwal@chromium.org>
Reviewed-by: Peter Conn <peconn@chromium.org>
Reviewed-by: Rohit Agarwal <roagarwal@chromium.org>
Reviewed-by: Ramin Halavati <rhalavati@chromium.org>
Cr-Commit-Position: refs/heads/master@{#752802}

chrome/android/chrome_test_java_sources.gni

@@ -210,6 +210,7 @@ chrome_test_java_sources = [
   "javatests/src/org/chromium/chrome/browser/incognito/IncognitoDataTestUtils.java",
   "javatests/src/org/chromium/chrome/browser/incognito/IncognitoHistoryLeakageTest.java",
   "javatests/src/org/chromium/chrome/browser/incognito/IncognitoNotificationServiceTest.java",
+  "javatests/src/org/chromium/chrome/browser/incognito/IncognitoPermissionLeakageTest.java",
   "javatests/src/org/chromium/chrome/browser/incognito/IncognitoTabLauncherTest.java",
   "javatests/src/org/chromium/chrome/browser/infobar/InfoBarAppearanceTest.java",
   "javatests/src/org/chromium/chrome/browser/infobar/InfoBarContainerTest.java",