[Android] Add OverviewListLayout to main CoordinatorLayout

chrome/android/java/src/org/chromium/chrome/browser/widget/OverviewListLayout.java

Index: chrome/android/java/src/org/chromium/chrome/browser/widget/OverviewListLayout.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/widget/OverviewListLayout.java b/chrome/android/java/src/org/chromium/chrome/browser/widget/OverviewListLayout.java
index b5b2424dab265a331d785125204b54c73349b11a..7a9177e75bd49a856249cef8716576e00c849cba 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/widget/OverviewListLayout.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/widget/OverviewListLayout.java
@@ -55,11 +55,10 @@ public class OverviewListLayout extends Layout implements AccessibilityTabModelA
             adjustForFullscreen();
         }
 
-        if (container == null) return;
+        if (container == null || mTabModelWrapper.getParent() != null) return;
 
-        if (mTabModelWrapper.getParent() == null) {
-            container.addView(mTabModelWrapper);
-        }
+        ((ViewGroup) container.findViewById(R.id.overview_list_layout_holder))

[David Trainor- moved to gerrit, 2017/05/24 18:58:23]

Hmm should "container" just be this new ViewGroup?  Might make sense have all of
these things attach/animate behind Chrome Home?  Fine with landing this for now
because of the deadline, but maybe file a bug/add a TODO to investigate the
larger change?

[Theresa, 2017/05/24 19:16:35]

Possibly. I'd need to look at each thing that extends Layout to determine if it
should go behind or in front of Chrome Home. I filed crbug.com/726033 to track
investigating.

+                .addView(mTabModelWrapper);
     }
 
     @Override