Revert of New UMA settings fragment using Android prefs. (patchset #6 id:160001 of https://codereview.chromium.org/1080723002/)

Reason for revert:
breaks clank downstream bots

Original issue's description:
> New UMA settings fragment using Android prefs.
>
> This CL is part of new UMA upload logic for 3g uploads. Previous three-option model is replaced with a new binary on/off-switch for users assigned to experimental group.
>
> Previous reverted CL (https://codereview.chromium.org/978623002/) used chromium preferences for the settings fragment, which caused problems. Crash reporting which also gets enabled/disabled by the same settings can not always support chromium preferences. Therefore this CL introduces new Android preferences for the new settings fragment.
>
> As the new logic with be enabled for users assigned to a particular experiment group, that info is also cached into Android pref so that the experiment group info can be accessible anytime.
>
> BUG=455847
>
> Committed: https://crrev.com/a44343327c0174fbbf4f1125f3eee25977be1652
> Cr-Commit-Position: refs/heads/master@{#326612}

TBR=asvitkine@chromium.org,dfalcantara@chromium.org,nyquist@chromium.org,noms@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=455847

Review URL: https://codereview.chromium.org/1101073003

Cr-Commit-Position: refs/heads/master@{#326675}

1 files changed, 0 insertions, 17 deletions

diff --git a/chrome/browser/android/preferences/pref_service_bridge.cc b/chrome/browser/android/preferences/pref_service_bridge.cc
index a902a04..189bab0 100644
--- a/chrome/browser/android/preferences/pref_service_bridge.cc
+++ b/chrome/browser/android/preferences/pref_service_bridge.cc
@@ -380,23 +380,6 @@ static jboolean GetFullscreenAllowed(JNIEnv* env, jobject obj) {
       CONTENT_SETTINGS_TYPE_FULLSCREEN, NULL) == CONTENT_SETTING_ALLOW;
 }
 
-static jboolean GetMetricsReportingEnabled(JNIEnv* env, jobject obj) {
-  PrefService* local_state = g_browser_process->local_state();
-  return local_state->GetBoolean(prefs::kMetricsReportingEnabled);
-}
-
-static void SetMetricsReportingEnabled(JNIEnv* env,
-                                       jobject obj,
-                                       jboolean enabled) {
-  PrefService* local_state = g_browser_process->local_state();
-  local_state->SetBoolean(prefs::kMetricsReportingEnabled, enabled);
-}
-
-static jboolean HasSetMetricsReporting(JNIEnv* env, jobject obj) {
-  PrefService* local_state = g_browser_process->local_state();
-  return local_state->HasPrefPath(prefs::kMetricsReportingEnabled);
-}
-
 namespace {
 
 // Redirects a BrowsingDataRemover completion callback back into Java.