Refine startBatteryDetailPage method to support history data

Bug: 177406865
Test: make SettingsRoboTests
Test: make SettingsGoogleRoboTests
Change-Id: Iee3b6b353c4f92bdad37fac55adad58b4f205bf6

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

@@ -37,6 +37,7 @@ import com.android.settingslib.widget.AppPreference;
 public class PowerGaugePreference extends AppPreference {
 
     private BatteryEntry mInfo;
+    private BatteryDiffEntry mBatteryDiffEntry;
     private CharSequence mContentDescription;
     private CharSequence mProgress;
     private boolean mShowAnomalyIcon;
@@ -98,10 +99,18 @@ public class PowerGaugePreference extends AppPreference {
         return mShowAnomalyIcon;
     }
 
+    public void setBatteryDiffEntry(BatteryDiffEntry entry) {
+        mBatteryDiffEntry = entry;
+    }
+
     BatteryEntry getInfo() {
         return mInfo;
     }
 
+    BatteryDiffEntry getBatteryDiffEntry() {
+        return mBatteryDiffEntry;
+    }
+
     @Override
     public void onBindViewHolder(PreferenceViewHolder view) {
         super.onBindViewHolder(view);