Download Home : Fixed layout inflate crash

This CL fixes a crash for API 19 when inflating layout for in-progress items.
We remove the selectableItemBackground attribute from the XML which fixes
the issue. However, with this change, the pause/resume button doesn't
provide user feedback on tap. We most likely have to implement our
own selectable item background for this.

Bug: 896808
Change-Id: I0156802c862fd11357d6a5179c42e8977896b847
Reviewed-on: https://chromium-review.googlesource.com/c/1294728Reviewed-by: David Trainor <dtrainor@chromium.org>
Commit-Queue: Shakti Sahu <shaktisahu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#602021}

chrome/android/java/res_download/drawable/circular_progress_bar_background_large.xml

@@ -4,7 +4,6 @@
      found in the LICENSE file. -->
 
 <layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
-    <item android:drawable="?attr/selectableItemBackground" />
     <item>
         <shape
             android:shape="oval">

chrome/android/java/res_download/drawable/circular_progress_bar_background_small.xml

@@ -4,7 +4,6 @@
      found in the LICENSE file. -->
 
 <layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
-    <item android:drawable="?attr/selectableItemBackground" />
     <item>
         <shape
             android:shape="oval">