[Merge M49] android: Fix select popup dialog Context edge case

There is no way to tell ahead of time whether a Context can be used to
display a pop up window, due to hacks some apps uses. Instead, catch the
BadTokenException and respond correctly to that.

BUG=573294

Review URL: https://codereview.chromium.org/1616473002

Cr-Commit-Position: refs/heads/master@{#370567}
(cherry picked from commit 132bb92)

Review URL: https://codereview.chromium.org/1619833002 .

Cr-Commit-Position: refs/branch-heads/2623@{#45}
Cr-Branched-From: 92d7753-refs/heads/master@{#369907}

content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java

@@ -2449,7 +2449,7 @@ private void showSelectPopup(long nativeSelectPopupSourceFrame, Rect bounds, Str
         } else {
             if (getWindowAndroid() == null) return;
             Context windowContext = getWindowAndroid().getContext().get();
-            if (WindowAndroid.activityFromContext(windowContext) == null) return;
+            if (windowContext == null) return;
             mSelectPopup = new SelectPopupDialog(
                     this, windowContext, popupItems, multiple, selectedIndices);
         }

content/public/android/java/src/org/chromium/content/browser/input/SelectPopupDialog.java

@@ -10,6 +10,7 @@
 import android.content.res.TypedArray;
 import android.util.SparseBooleanArray;
 import android.view.View;
+import android.view.WindowManager;
 import android.widget.AdapterView;
 import android.widget.AdapterView.OnItemClickListener;
 import android.widget.ListView;
@@ -128,7 +129,11 @@ private void notifySelection(int[] indicies) {
 
     @Override
     public void show() {
-        mListBoxPopup.show();
+        try {
+            mListBoxPopup.show();
+        } catch (WindowManager.BadTokenException e) {
+            notifySelection(null);
+        }
     }
 
     @Override