[Home] Make SuggestionsRecyclerView match parent width.

BUG=707776

Review-Url: https://codereview.chromium.org/2799153003
Cr-Commit-Position: refs/heads/master@{#462827}

chrome/android/java/res/layout/suggestions_bottom_sheet_content.xml

@@ -11,7 +11,7 @@
 
     <org.chromium.chrome.browser.suggestions.SuggestionsRecyclerView
         android:id="@+id/recycler_view"
-        android:layout_width="wrap_content"
+        android:layout_width="match_parent"
         android:layout_height="wrap_content" />
 
     <org.chromium.chrome.browser.widget.FadingShadowView