Make Apps Icons size consistent in Battery Stats

- set them to 24dip as for the Settings Dashboard

Change-Id: Iadab299cac88a6b22157d285aff8a7dcf506fc97
diff --git a/res/layout/app_percentage_item.xml b/res/layout/app_percentage_item.xml
index 08042a9..695201e 100644
--- a/res/layout/app_percentage_item.xml
+++ b/res/layout/app_percentage_item.xml
@@ -26,8 +26,9 @@
 
     <ImageView
         android:id="@android:id/icon"
-        android:layout_width="@android:dimen/app_icon_size"
-        android:layout_height="@android:dimen/app_icon_size"
+        android:layout_width="@dimen/app_icon_size"
+        android:layout_height="@dimen/app_icon_size"
+        android:layout_gravity="center"
         android:layout_rowSpan="3"
         android:layout_marginEnd="8dip"
         android:scaleType="centerInside"
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index de53006..7a52de4 100755
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -90,6 +90,9 @@
     <!-- Default text size for caption preview samples. Uses dp rather than sp because captions are not scaled. -->
     <dimen name="caption_preview_text_size">48dp</dimen>
 
+    <!-- Dashboard image tile size -->
+    <dimen name="app_icon_size">24dp</dimen>
+
     <!-- ActionBar height -->
     <dimen name="actionbar_size">56dip</dimen>
 
diff --git a/src/com/android/settings/fuelgauge/PowerGaugePreference.java b/src/com/android/settings/fuelgauge/PowerGaugePreference.java
index a028adf..a3237b3 100644
--- a/src/com/android/settings/fuelgauge/PowerGaugePreference.java
+++ b/src/com/android/settings/fuelgauge/PowerGaugePreference.java
@@ -24,7 +24,6 @@
 import android.widget.ProgressBar;
 import android.widget.TextView;
 
-import com.android.internal.os.BatterySipper;
 import com.android.settings.R;
 
 /**