Merge "Adding a static method to get the size of a content url" into honeycomb

package android.webkit;

import android.content.Context;

import android.net.Uri;

import android.util.Log;

import java.io.InputStream;

class JniUtil {

    private static final String LOGTAG = "webkit";

    private JniUtil() {} // Utility class, do not instantiate.

    // Used by the Chromium HTTP stack.

        return sCacheDirectory;

    }

    /**

     * Called by JNI. Calculates the size of an input stream by reading it.

     * @return long The size of the stream

     */

    private static synchronized long contentUrlSize(String url) {

        final String ANDROID_CONTENT = "content:";

        // content://

        if (url.startsWith(ANDROID_CONTENT)) {

            try {

                // Strip off mimetype, for compatibility with ContentLoader.java

                // If we don't do this, we can fail to load Gmail attachments,

                // because the URL being loaded doesn't exactly match the URL we

                // have permission to read.

                int mimeIndex = url.lastIndexOf('?');

                if (mimeIndex != -1) {

                    url = url.substring(0, mimeIndex);

                }

                Uri uri = Uri.parse(url);

                InputStream is = sContext.getContentResolver().openInputStream(uri);

                byte[] buffer = new byte[1024];

                int n;

                long size = 0;

                try {

                    while ((n = is.read(buffer)) != -1) {

                        size += n;

                    }

                } finally {

                    is.close();

                }

                return size;

            } catch (Exception e) {

                Log.e(LOGTAG, "Exception: " + url);

                return 0;

            }

        } else {

            return 0;

        }

    }

    /**

     * Returns true if we're using the Chromium HTTP stack.

     *