[WIP] make GURL::path() return a StringPiece

android_webview/native/aw_web_contents_delegate.cc

Index: android_webview/native/aw_web_contents_delegate.cc
diff --git a/android_webview/native/aw_web_contents_delegate.cc b/android_webview/native/aw_web_contents_delegate.cc
index 20819bba2805537371c981c9e2044d41a034fe22..40bbf203c4076b5aa2e366f6b141d17b33415914 100644
--- a/android_webview/native/aw_web_contents_delegate.cc
+++ b/android_webview/native/aw_web_contents_delegate.cc
@@ -292,7 +292,7 @@ static void FilesSelectedInChooser(
     if (!url.is_valid())
       continue;
     base::FilePath path(url.SchemeIsFile() ?
-        net::UnescapeURLComponent(url.path(),
+        net::UnescapeURLComponent(url.path().as_string(),
             net::UnescapeRule::SPACES |
             net::UnescapeRule::URL_SPECIAL_CHARS_EXCEPT_PATH_SEPARATORS) :
             file_path_str[i]);