Increase heights of individual volume sliders

Bug: 24311740
Change-Id: I5fb776ba822661e8335906eb6e82b5200a71d940
diff --git a/v7/mediarouter/res/layout/mr_controller_volume_item.xml b/v7/mediarouter/res/layout/mr_controller_volume_item.xml
index 6cd0fd6..92c56f9 100644
--- a/v7/mediarouter/res/layout/mr_controller_volume_item.xml
+++ b/v7/mediarouter/res/layout/mr_controller_volume_item.xml
@@ -39,6 +39,6 @@
                    android:src="?attr/mediaRouteAudioTrackDrawable" />
         <android.support.v7.app.MediaRouteVolumeSlider android:id="@+id/mr_volume_slider"
                  android:layout_width="fill_parent"
-                 android:layout_height="wrap_content" />
+                 android:layout_height="fill_parent" />
     </LinearLayout>
 </LinearLayout>
diff --git a/v7/mediarouter/res/layout/mr_volume_control.xml b/v7/mediarouter/res/layout/mr_volume_control.xml
index 18d7864..7091ceb 100644
--- a/v7/mediarouter/res/layout/mr_volume_control.xml
+++ b/v7/mediarouter/res/layout/mr_volume_control.xml
@@ -31,7 +31,7 @@
     <android.support.v7.app.MediaRouteVolumeSlider
             android:id="@+id/mr_volume_slider"
             android:layout_width="0dp"
-            android:layout_height="wrap_content"
+            android:layout_height="fill_parent"
             android:layout_weight="1"/>
     <android.support.v7.app.MediaRouteExpandCollapseButton
             android:id="@+id/mr_group_expand_collapse"