Revert of New UMA settings fragment for Chrome on Android.

Revert of New UMA settings fragment for Chrome on Android. (patchset #9 id:520001 of https://codereview.chromium.org/978623002/)

Reason for revert:
reverting back to fix crashes during Release tests crbug.com/470016 crbug.com/470062

Original issue's description:
> New UMA settings fragment for Chrome on Android.
>
> This CL is part of new UMA upload logic. The change is for getting more usage data for Chrome users who exclusively use wireless networks. For that, a new binary on/off-switch is added instead of previous three-option model. However, the upload logic is changed on Android to reduce the data usage.
>
> The new binary switch is also connected to a different pref then previous switch. For the beginning the new settings UI would be enabled for users assigned to experimental group.
>
> BUG=455847
>
> Committed: https://crrev.com/c68d47f75c20971faee1b04d896bf25482aa2b03
> Cr-Commit-Position: refs/heads/master@{#321575}

TBR=nyquist@chromium.org,asvitkine@chromium.org,dfalcantara@chromium.org,holte@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=455847
Committed: https://crrev.com/8272191fccbfffae4c7fa0651dbda1bfe483526c
Cr-Commit-Position: refs/heads/master@{#322823}

[gayane -on leave until 09-2017, 2015-03-30 14:58:13]

Created Revert of New UMA settings fragment for Chrome on Android.

[commit-bot: I haz the power, 2015-03-30 14:58:30]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1048803003/1

[commit-bot: I haz the power, 2015-03-30 14:58:32]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-03-30 14:58:33]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[Alexei Svitkine (slow), 2015-03-30 15:15:17]

lgtm

[gayane -on leave until 09-2017, 2015-03-30 15:15:44]

The CQ bit was checked by gayane@chromium.org

[commit-bot: I haz the power, 2015-03-30 15:16:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1048803003/1

[commit-bot: I haz the power, 2015-03-30 15:16:38]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-03-30 15:16:41]

Failed to apply patch for
chrome/browser/android/preferences/pref_service_bridge.cc:
While running git apply --index -3 -p1;
  error: patch failed:
chrome/browser/android/preferences/pref_service_bridge.cc:295
  error: repository lacks the necessary blob to fall back on 3-way merge.
  error: chrome/browser/android/preferences/pref_service_bridge.cc: patch does
not apply

Patch:       chrome/browser/android/preferences/pref_service_bridge.cc
Index: chrome/browser/android/preferences/pref_service_bridge.cc
diff --git a/chrome/browser/android/preferences/pref_service_bridge.cc
b/chrome/browser/android/preferences/pref_service_bridge.cc
index
59ceecc91cb5eac7629ac0f1a3b7f25a3da3f32e..58c42080296a9db8098edde404bb8dd4dcb0bf4a
100644
--- a/chrome/browser/android/preferences/pref_service_bridge.cc
+++ b/chrome/browser/android/preferences/pref_service_bridge.cc
@@ -295,23 +295,6 @@
       prefs::kIncognitoModeAvailability);
 }
 
-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.

[gayane -on leave until 09-2017, 2015-03-30 17:46:22]

Patchset #2 (id:160003) has been deleted

[gayane -on leave until 09-2017, 2015-03-30 17:50:52]

Patchset #2 (id:220001) has been deleted

[gayane -on leave until 09-2017, 2015-03-30 18:59:19]

The CQ bit was checked by gayane@chromium.org

[gayane -on leave until 09-2017, 2015-03-30 18:59:20]

The patchset sent to the CQ was uploaded after l-g-t-m from
asvitkine@chromium.org
Link to the patchset: https://codereview.chromium.org/1048803003/#ps240001
(title: "merge")

[commit-bot: I haz the power, 2015-03-30 18:59:49]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1048803003/240001

[commit-bot: I haz the power, 2015-03-30 19:01:36]

Committed patchset #2 (id:240001)

[commit-bot: I haz the power, 2015-03-30 19:02:44]

Patchset 2 (id:??) landed as
https://crrev.com/8272191fccbfffae4c7fa0651dbda1bfe483526c
Cr-Commit-Position: refs/heads/master@{#322823}