src/api-impl: fix up code style, mainly for code imported from AOSP

used the following (plus manual edits):
`clang-format --style="{BasedOnStyle: LLVM, IndentWidth: 8, UseTab: Always, AllowShortIfStatementsOnASingleLine: false, IndentCaseLabels: true, ColumnLimit: 0}`

src/api-impl/android/webkit/DownloadListener.java

@@ -15,15 +15,15 @@
  */
 package android.webkit;
 public interface DownloadListener {
-    /**
-     * Notify the host application that a file should be downloaded
-     * @param url The full url to the content that should be downloaded
-     * @param userAgent the user agent to be used for the download.
-     * @param contentDisposition Content-disposition http header, if 
-     *                           present.
-     * @param mimetype The mimetype of the content reported by the server
-     * @param contentLength The file size reported by the server
-     */
-    public void onDownloadStart(String url, String userAgent,
-            String contentDisposition, String mimetype, long contentLength);
+	/**
+	 * Notify the host application that a file should be downloaded
+	 * @param url The full url to the content that should be downloaded
+	 * @param userAgent the user agent to be used for the download.
+	 * @param contentDisposition Content-disposition http header, if
+	 *                           present.
+	 * @param mimetype The mimetype of the content reported by the server
+	 * @param contentLength The file size reported by the server
+	 */
+	public void onDownloadStart(String url, String userAgent,
+				    String contentDisposition, String mimetype, long contentLength);
 }

src/api-impl/android/webkit/WebView.java

@@ -5,7 +5,7 @@ import android.view.View;
 
 // the only reason we need to implement this is that some app developers are such scumbags that they try to use this for tracking purposes
 public class WebView extends View {
-	public WebView (Context context) {
+	public WebView(Context context) {
 		super(context);
 	}