Remove no longer used UsageAndCrashReport fragment

The Usage and Crash report settings screen was replaced with a switch.
Cleaning up no longer used files and resources.

Bug: 868826
Change-Id: Id833a49fba6503d356978bacf6b246e11ae6bf46
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1896123Reviewed-by: Boris Sazonov <bsazonov@chromium.org>
Commit-Queue: Natalie Chouinard <chouinard@chromium.org>
Cr-Commit-Position: refs/heads/master@{#712244}

WATCHLISTS

@@ -85,8 +85,7 @@
       'filepath': 'chrome/android/java/src/org/chromium/chrome/browser/Tab'
     },
     'android_uma_settings': {
-      'filepath': 'chrome/android/java/src/org/chromium/chrome/browser/preferences/privacy/UsageAndCrashReportsPreferenceFragment.java|'\
-                  'chrome/android/java/src/org/chromium/chrome/browser/preferences/privacy/PrivacyPreferencesManager.java|'\
+      'filepath': 'chrome/android/java/src/org/chromium/chrome/browser/preferences/privacy/PrivacyPreferencesManager.java|'\
                   'chrome/android/java/src/org/chromium/chrome/browser/preferences/privacy/PrivacyPreferences.java|'\
                   'chrome/android/java/src/org/chromium/chrome/browser/metrics/UmaSessionStats.java',
     },

chrome/android/chrome_java_sources.gni

@@ -1380,7 +1380,6 @@ chrome_java_sources = [
   "java/src/org/chromium/chrome/browser/preferences/privacy/OtherFormsOfHistoryDialogFragment.java",
   "java/src/org/chromium/chrome/browser/preferences/privacy/PrivacyPreferences.java",
   "java/src/org/chromium/chrome/browser/preferences/privacy/PrivacyPreferencesManager.java",
-  "java/src/org/chromium/chrome/browser/preferences/privacy/UsageAndCrashReportsPreferenceFragment.java",
   "java/src/org/chromium/chrome/browser/preferences/themes/RadioButtonGroupThemePreference.java",
   "java/src/org/chromium/chrome/browser/preferences/themes/ThemePreferences.java",
   "java/src/org/chromium/chrome/browser/preferences/website/AddExceptionPreference.java",

chrome/android/java/res/values/values.xml

@@ -48,7 +48,6 @@
     <string name="help_context_protected_content">protected_content</string>
     <string name="help_context_data_reduction">reduce_data_usage</string>
     <string name="help_context_incognito_learn_more">chrome_incognito</string>
-    <string name="help_context_usage_reports">send_crash_report</string>
     <string name="help_context_sad_tab">mobile_awsnap</string>
     <string name="help_context_clear_browsing_data">clear_browsing_data</string>
     <string name="help_context_change_sync_passphrase">change_sync_passphrase</string>

chrome/android/java/res/xml/usage_and_crash_reports_preferences.xml

-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright 2015 The Chromium Authors. All rights reserved.
-     Use of this source code is governed by a BSD-style license that can be
-     found in the LICENSE file. -->
-
-<PreferenceScreen
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
-
-    <org.chromium.chrome.browser.preferences.ChromeSwitchPreference
-        android:key="usage_and_crash_reports_switch"
-        android:summaryOn="@string/text_on"
-        android:summaryOff="@string/text_off"
-        app:drawDivider="true"/>
-
-    <org.chromium.chrome.browser.preferences.TextMessagePreference
-        android:title="@string/usage_and_crash_reports_description_legacy"/>
-
-    <org.chromium.chrome.browser.preferences.LearnMorePreference
-        android:key="usage_and_crash_reports_learn_more"
-        app:helpContext="@string/help_context_usage_reports"/>
-
-</PreferenceScreen>
\ No newline at end of file

chrome/android/java/src/org/chromium/chrome/browser/preferences/privacy/UsageAndCrashReportsPreferenceFragment.java

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package org.chromium.chrome.browser.preferences.privacy;
-
-import android.os.Bundle;
-import android.support.v7.preference.PreferenceFragmentCompat;
-
-import org.chromium.chrome.R;
-import org.chromium.chrome.browser.metrics.UmaSessionStats;
-import org.chromium.chrome.browser.preferences.ChromeSwitchPreference;
-import org.chromium.chrome.browser.preferences.PrefServiceBridge;
-import org.chromium.chrome.browser.preferences.PreferenceUtils;
-
-/**
- * Fragment to manage the Usage and crash reports preference and to explain to
- * the user what it does.
- */
-public class UsageAndCrashReportsPreferenceFragment extends PreferenceFragmentCompat {
-    private static final String PREF_USAGE_AND_CRASH_REPORTS_SWITCH =
-            "usage_and_crash_reports_switch";
-
-    @Override
-    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
-        PreferenceUtils.addPreferencesFromResource(this, R.xml.usage_and_crash_reports_preferences);
-        getActivity().setTitle(R.string.usage_and_crash_reports_title_legacy);
-        initUsageAndCrashReportsSwitch();
-    }
-
-    private void initUsageAndCrashReportsSwitch() {
-        ChromeSwitchPreference usageAndCrashReportsSwitch =
-                (ChromeSwitchPreference) findPreference(PREF_USAGE_AND_CRASH_REPORTS_SWITCH);
-        boolean enabled =
-                PrivacyPreferencesManager.getInstance().isUsageAndCrashReportingPermittedByUser();
-        usageAndCrashReportsSwitch.setChecked(enabled);
-
-        usageAndCrashReportsSwitch.setOnPreferenceChangeListener((preference, newValue) -> {
-            UmaSessionStats.changeMetricsReportingConsent((boolean) newValue);
-            return true;
-        });
-
-        usageAndCrashReportsSwitch.setManagedPreferenceDelegate(
-                preference -> PrefServiceBridge.getInstance().isMetricsReportingManaged());
-    }
-}

chrome/android/java/strings/android_chrome_strings.grd

@@ -844,13 +844,6 @@ Your Google account may have other forms of browsing history like searches and a
         <ph name="NUMBER_OF_ITEMS">%1$s<ex>3</ex></ph> items deleted
       </message>
 
-      <message name="IDS_USAGE_AND_CRASH_REPORTS_TITLE_LEGACY" desc="Title for 'Usage and crash reports' preference">
-        Usage and crash reports
-      </message>
-      <message name="IDS_USAGE_AND_CRASH_REPORTS_DESCRIPTION_LEGACY" desc="Description for 'Usage and crash reports' preference">
-        Automatically send usage statistics and crash reports to Google
-      </message>
-
       <!-- Accessibility preferences -->
       <message name="IDS_PREFS_ACCESSIBILITY" desc="Title of Accessibility settings, which allows the user to change webpage font sizes. [CHAR-LIMIT=32]">
         Accessibility