Expose kSafeBrowsingExtendedReportingOptInAllowed pref in Java

This CL makes it possible to disable the checkbox for extended Safe
Browsing reporting from Java.

Bug: 938902
Change-Id: I82eaa03094cd75cd3da4dc3235dfc7bd681d29f4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1660862
Commit-Queue: Alex Ilin <alexilin@chromium.org>
Reviewed-by: Tommy Nyquist <nyquist@chromium.org>
Cr-Commit-Position: refs/heads/master@{#670011}

chrome/browser/android/preferences/prefs.h

@@ -18,6 +18,7 @@
 #include "components/ntp_snippets/pref_names.h"
 #include "components/offline_pages/core/prefetch/prefetch_prefs.h"
 #include "components/payments/core/payment_prefs.h"
+#include "components/safe_browsing/common/safe_browsing_prefs.h"
 
 // A preference exposed to Java.
 // A Java counterpart will be generated for this enum.
@@ -36,6 +37,7 @@ enum Pref {
   AUTOFILL_CREDIT_CARD_ENABLED,
   USAGE_STATS_ENABLED,
   OFFLINE_PREFETCH_USER_SETTING_ENABLED,
+  SAFE_BROWSING_EXTENDED_REPORTING_OPT_IN_ALLOWED,
   // PREF_NUM_PREFS must be the last entry.
   PREF_NUM_PREFS
 };
@@ -63,6 +65,7 @@ const char* const kPrefsExposedToJava[] = {
     autofill::prefs::kAutofillCreditCardEnabled,
     prefs::kUsageStatsEnabled,
     offline_pages::prefetch_prefs::kUserSettingEnabled,
+    prefs::kSafeBrowsingExtendedReportingOptInAllowed,
 };
 
 #endif  // CHROME_BROWSER_ANDROID_PREFERENCES_PREFS_H_

chrome/browser/android/preferences/prefs_unittest.cc

@@ -62,6 +62,8 @@ TEST_F(PrefsTest, TestIndex) {
   EXPECT_EQ(prefs::kUsageStatsEnabled, GetPrefName(USAGE_STATS_ENABLED));
   EXPECT_EQ(offline_pages::prefetch_prefs::kUserSettingEnabled,
             GetPrefName(OFFLINE_PREFETCH_USER_SETTING_ENABLED));
+  EXPECT_EQ(prefs::kSafeBrowsingExtendedReportingOptInAllowed,
+            GetPrefName(SAFE_BROWSING_EXTENDED_REPORTING_OPT_IN_ALLOWED));
 
   // If this check fails, a pref is missing a test case above.
   EXPECT_EQ(Pref::PREF_NUM_PREFS, pref_count_);