Removed unused sharing and seach icons.

myTracks/src/main/java/com/google/android/apps/mytracks/TrackListActivity.java

@@ -593,8 +593,7 @@ public class TrackListActivity extends AbstractTrackActivity implements FileType
       startGpsMenuItem.setVisible(!isRecording);
       if (!isRecording) {
         startGpsMenuItem.setTitle(isGpsStarted ? R.string.menu_stop_gps : R.string.menu_start_gps);
-        startGpsMenuItem.setIcon(
-            isGpsStarted ? R.drawable.ic_menu_stop_gps : R.drawable.ic_menu_start_gps);
+        startGpsMenuItem.setIcon(isGpsStarted ? R.drawable.ic_menu_stop_gps : R.drawable.ic_menu_start_gps);
         TrackIconUtils.setMenuIconColor(startGpsMenuItem);        
       }
     }

myTracks/src/main/java/com/google/android/apps/mytracks/util/TrackIconUtils.java

@@ -238,6 +238,8 @@ public class TrackIconUtils {
    */
   private static void revertMenuIconColor(MenuItem menuitem) {
     Drawable drawable = menuitem.getIcon();
-    drawable.setColorFilter(new ColorMatrixColorFilter(REVERT_COLOR_MATRIX));
+    if (drawable != null) {
+      drawable.setColorFilter(new ColorMatrixColorFilter(REVERT_COLOR_MATRIX));
+    }
   }
 }

myTracks/src/main/res/menu/marker_list.xml

@@ -21,7 +21,6 @@ limitations under the License.
         android:showAsAction="ifRoom" />
     <item
         android:id="@+id/marker_list_search"
-        android:icon="@drawable/ic_menu_search"
         android:title="@string/menu_search"
         android:actionViewClass="android.widget.SearchView"
         android:showAsAction="ifRoom|collapseActionView" />

myTracks/src/main/res/menu/search_list.xml

@@ -17,7 +17,6 @@ limitations under the License.
     xmlns:app="http://schemas.android.com/apk/res-auto">
     <item
         android:id="@+id/search_list_search"
-        android:icon="@drawable/ic_menu_search"
         android:title="@string/menu_search"
         android:actionViewClass="android.widget.SearchView"
         app:showAsAction="ifRoom|collapseActionView" />

myTracks/src/main/res/menu/track_list.xml

@@ -16,7 +16,6 @@ limitations under the License.
 <menu xmlns:android="http://schemas.android.com/apk/res/android">
     <item
         android:id="@+id/track_list_search"
-        android:icon="@drawable/ic_menu_search"
         android:title="@string/menu_search"
         android:actionViewClass="android.widget.SearchView"
         android:showAsAction="ifRoom" />