Remove battery usage preference in app info page

Bug: 78011526
Test: RunSettingsRoboTests
Change-Id: I2dfb989167fe27857590f416fbb16d401e53bc1d

res/values/strings.xml

@@ -5315,8 +5315,6 @@
     <string name="battery_detail_background">While in background</string>
     <!-- Title for battery usage amount by this app. [CHAR LIMIT=80] -->
     <string name="battery_detail_power_usage">Battery usage</string>
-    <!-- Description for battery usage amount, i.e. 16% of overall app usage(340 mAh). [CHAR LIMIT=120] -->
-    <string name="battery_detail_power_percentage"><xliff:g id="percent">%1$s</xliff:g> of total app usage (<xliff:g id="power">%2$d</xliff:g>mAh)</string>
     <!-- Title for the battery usage group, which means all the battery data are calculated 'since full charge' [CHAR LIMIT=40] -->
     <string name ="battery_detail_info_title">Since full charge</string>
     <!-- Title for the battery management group [CHAR LIMIT=40] -->

res/xml/power_usage_detail.xml

@@ -61,11 +61,6 @@
             android:title="@string/battery_detail_background"
             android:selectable="false"/>
 
-        <Preference
-            android:key="app_power_usage"
-            android:title="@string/battery_detail_power_usage"
-            android:selectable="false"/>
-
     </PreferenceCategory>
 
 </PreferenceScreen>

src/com/android/settings/fuelgauge/AdvancedPowerUsageDetail.java

@@ -87,7 +87,6 @@ public class AdvancedPowerUsageDetail extends DashboardFragment implements
 
     private static final String KEY_PREF_FOREGROUND = "app_usage_foreground";
     private static final String KEY_PREF_BACKGROUND = "app_usage_background";
-    private static final String KEY_PREF_POWER_USAGE = "app_power_usage";
     private static final String KEY_PREF_HEADER = "header_view";
 
     private static final int REQUEST_UNINSTALL = 0;
@@ -109,8 +108,6 @@ public class AdvancedPowerUsageDetail extends DashboardFragment implements
     @VisibleForTesting
     Preference mBackgroundPreference;
     @VisibleForTesting
-    Preference mPowerUsagePreference;
-    @VisibleForTesting
     AnomalySummaryPreferenceController mAnomalySummaryPreferenceController;
     private AppButtonsPreferenceController mAppButtonsPreferenceController;
     private BackgroundActivityPreferenceController mBackgroundActivityPreferenceController;
@@ -221,7 +218,6 @@ public class AdvancedPowerUsageDetail extends DashboardFragment implements
                 (SettingsActivity) getActivity(), this);
         mForegroundPreference = findPreference(KEY_PREF_FOREGROUND);
         mBackgroundPreference = findPreference(KEY_PREF_BACKGROUND);
-        mPowerUsagePreference = findPreference(KEY_PREF_POWER_USAGE);
         mHeaderPreference = (LayoutPreference) findPreference(KEY_PREF_HEADER);
 
         if (mPackageName != null) {
@@ -297,8 +293,6 @@ public class AdvancedPowerUsageDetail extends DashboardFragment implements
         mBackgroundPreference.setSummary(
                 TextUtils.expandTemplate(getText(R.string.battery_active_for),
                         StringUtil.formatElapsedTime(context, backgroundTimeMs, false)));
-        mPowerUsagePreference.setSummary(
-                getString(R.string.battery_detail_power_percentage, usagePercent, powerMah));
     }
 
     @Override

tests/robotests/src/com/android/settings/fuelgauge/AdvancedPowerUsageDetailTest.java

@@ -136,7 +136,6 @@ public class AdvancedPowerUsageDetailTest {
     private Context mContext;
     private Preference mForegroundPreference;
     private Preference mBackgroundPreference;
-    private Preference mPowerUsagePreference;
     private AdvancedPowerUsageDetail mFragment;
     private SettingsActivity mTestActivity;
     private List<Anomaly> mAnomalies;
@@ -214,10 +213,8 @@ public class AdvancedPowerUsageDetailTest {
 
         mForegroundPreference = new Preference(mContext);
         mBackgroundPreference = new Preference(mContext);
-        mPowerUsagePreference = new Preference(mContext);
         mFragment.mForegroundPreference = mForegroundPreference;
         mFragment.mBackgroundPreference = mBackgroundPreference;
-        mFragment.mPowerUsagePreference = mPowerUsagePreference;
         mFragment.mAnomalySummaryPreferenceController = mAnomalySummaryPreferenceController;
 
         mAnomalies = new ArrayList<>();
@@ -412,15 +409,11 @@ public class AdvancedPowerUsageDetailTest {
                 R.string.battery_used_for);
         doReturn(mContext.getText(R.string.battery_active_for)).when(mFragment).getText(
                 R.string.battery_active_for);
-        doReturn(mContext.getString(R.string.battery_detail_power_percentage, USAGE_PERCENT,
-                POWER_MAH)).when(mFragment)
-                .getString(R.string.battery_detail_power_percentage, USAGE_PERCENT, POWER_MAH);
 
         mFragment.initPreference();
 
         assertThat(mForegroundPreference.getSummary().toString()).isEqualTo("Used for 0 min");
         assertThat(mBackgroundPreference.getSummary().toString()).isEqualTo("Active for 0 min");
-        assertThat(mPowerUsagePreference.getSummary()).isEqualTo("16% of total app usage (150mAh)");
     }
 
     @Test