Do screenshot capture async for share intents.

chrome/android/java/src/org/chromium/chrome/browser/util/CompatibilityFileProvider.java

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package org.chromium.chrome.browser.util;
-
-import android.database.Cursor;
-import android.database.MatrixCursor;
-import android.net.Uri;
-import android.provider.MediaStore;
-import android.support.v4.content.FileProvider;
-
-import java.util.Arrays;
-
-/**
- * A FileProvider which works around a bad assumption that particular MediaStore columns exist by
- * certain third party applications.
- * http://crbug.com/467423.
- */
-public class CompatibilityFileProvider extends FileProvider {
-    @Override
-    public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
-            String sortOrder) {
-        Cursor source = super.query(uri, projection, selection, selectionArgs, sortOrder);
-
-        String[] columnNames = source.getColumnNames();
-        String[] newColumnNames = columnNamesWithData(columnNames);
-        if (columnNames == newColumnNames) return source;
-
-        MatrixCursor cursor = new MatrixCursor(newColumnNames, source.getCount());
-
-        source.moveToPosition(-1);
-        while (source.moveToNext()) {
-            MatrixCursor.RowBuilder row = cursor.newRow();
-            for (int i = 0; i < columnNames.length; i++) {
-                switch (source.getType(i)) {
-                    case Cursor.FIELD_TYPE_INTEGER:
-                        row.add(source.getInt(i));
-                        break;
-                    case Cursor.FIELD_TYPE_FLOAT:
-                        row.add(source.getFloat(i));
-                        break;
-                    case Cursor.FIELD_TYPE_STRING:
-                        row.add(source.getString(i));
-                        break;
-                    case Cursor.FIELD_TYPE_BLOB:
-                        row.add(source.getBlob(i));
-                        break;
-                    case Cursor.FIELD_TYPE_NULL:
-                    default:
-                        row.add(null);
-                        break;
-                }
-            }
-        }
-
-        source.close();
-        return cursor;
-    }
-
-    private String[] columnNamesWithData(String[] columnNames) {
-        for (String columnName : columnNames) {
-            if (MediaStore.MediaColumns.DATA.equals(columnName)) return columnNames;
-        }
-
-        String[] newColumnNames = Arrays.copyOf(columnNames, columnNames.length + 1);
-        newColumnNames[columnNames.length] = MediaStore.MediaColumns.DATA;
-        return newColumnNames;
-    }
-}