Implement the file chooser as a new resource "host"

webkit/plugins/ppapi/mock_plugin_delegate.cc

Index: webkit/plugins/ppapi/mock_plugin_delegate.cc
diff --git a/webkit/plugins/ppapi/mock_plugin_delegate.cc b/webkit/plugins/ppapi/mock_plugin_delegate.cc
index 08f4f2ae06a044021d4ec21c01c20c35faea3a93..69279f761e20381befb8370a818d7fc6f6938e01 100644
--- a/webkit/plugins/ppapi/mock_plugin_delegate.cc
+++ b/webkit/plugins/ppapi/mock_plugin_delegate.cc
@@ -130,12 +130,6 @@ void MockPluginDelegate::NumberOfFindResultsChanged(int identifier,
 void MockPluginDelegate::SelectedFindResultChanged(int identifier, int index) {
 }
 
-bool MockPluginDelegate::RunFileChooser(
-    const WebKit::WebFileChooserParams& params,
-    WebKit::WebFileChooserCompletion* chooser_completion) {
-  return false;
-}
-
 bool MockPluginDelegate::AsyncOpenFile(const FilePath& path,
                                        int flags,
                                        const AsyncOpenFileCallback& callback) {