Invalidations: Delete obsolete flag definitions

The flags (cmdline switches) kInvalidationUseGCMChannel and
kSyncNotificationHostPort were obsolete (never set or checked anymore),
so this CL removes them.

Bug: none
Change-Id: Id11dd81bae8fcb49b0b8b2f2eae4013cfd2a06f0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1944348
Commit-Queue: Marc Treib <treib@chromium.org>
Commit-Queue: Mohamed Amir Yosef <mamir@chromium.org>
Auto-Submit: Marc Treib <treib@chromium.org>
Reviewed-by: Mohamed Amir Yosef <mamir@chromium.org>
Cr-Commit-Position: refs/heads/master@{#720188}

components/invalidation/impl/invalidation_switches.cc

@@ -7,14 +7,6 @@
 namespace invalidation {
 namespace switches {
 
-#if defined(OS_CHROMEOS)
-// Device invalidation service should use GCM network channel.
-const char kInvalidationUseGCMChannel[] = "invalidation-use-gcm-channel";
-#endif  // OS_CHROMEOS
-
-// Overrides the default host:port used for notifications.
-const char kSyncNotificationHostPort[] = "sync-notification-host-port";
-
 const base::Feature kFCMInvalidationsConservativeEnabling = {
     "FCMInvalidationsConservativeEnabling", base::FEATURE_ENABLED_BY_DEFAULT};
 

components/invalidation/impl/invalidation_switches.h

@@ -6,16 +6,10 @@
 #define COMPONENTS_INVALIDATION_IMPL_INVALIDATION_SWITCHES_H
 
 #include "base/feature_list.h"
-#include "build/build_config.h"
 
 namespace invalidation {
 namespace switches {
 
-#if defined(OS_CHROMEOS)
-extern const char kInvalidationUseGCMChannel[];
-#endif  // OS_CHROMEOS
-
-extern const char kSyncNotificationHostPort[];
 extern const base::Feature kFCMInvalidationsConservativeEnabling;
 extern const base::Feature kFCMInvalidationsStartOnceActiveAccountAvailable;
 extern const base::Feature kFCMInvalidationsForSyncDontCheckVersion;