Pass JavaRef to Java methods in android_webview.

android_webview/native/aw_web_contents_delegate.cc

 // Copyright (c) 2012 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.
 
 #include "android_webview/native/aw_web_contents_delegate.h"
 
 #include "android_webview/browser/aw_javascript_dialog_manager.h"
 #include "android_webview/browser/find_helper.h"
 #include "android_webview/native/aw_contents.h"
 #include "android_webview/native/aw_contents_io_thread_client_impl.h"
@@ skipping 98 matching lines @@
     mode_flags |= kFileChooserModeOpenMultiple | kFileChooserModeOpenFolder;
   } else if (params.mode == FileChooserParams::Save) {
     // Save not supported, so cancel it.
     render_frame_host->FilesSelectedInChooser(
         std::vector<content::FileChooserFileInfo>(), params.mode);
     return;
   } else {
     DCHECK_EQ(FileChooserParams::Open, params.mode);
   }
   Java_AwWebContentsDelegate_runFileChooser(
-      env, java_delegate.obj(), render_frame_host->GetProcess()->GetID(),
+      env, java_delegate, render_frame_host->GetProcess()->GetID(),
       render_frame_host->GetRoutingID(), mode_flags,
       ConvertUTF16ToJavaString(
-          env, base::JoinString(params.accept_types, base::ASCIIToUTF16(",")))
-          .obj(),
-      params.title.empty() ? NULL
-                           : ConvertUTF16ToJavaString(env, params.title).obj(),
+          env, base::JoinString(params.accept_types, base::ASCIIToUTF16(","))),
+      params.title.empty() ? nullptr
+                           : ConvertUTF16ToJavaString(env, params.title),
       params.default_file_name.empty()
-          ? NULL
-          : ConvertUTF8ToJavaString(env, params.default_file_name.value())
-                .obj(),
+          ? nullptr
+          : ConvertUTF8ToJavaString(env, params.default_file_name.value()),
       params.capture);
 }
 
 void AwWebContentsDelegate::AddNewContents(WebContents* source,
                                            WebContents* new_contents,
                                            WindowOpenDisposition disposition,
                                            const gfx::Rect& initial_rect,
                                            bool user_gesture,
                                            bool* was_blocked) {
   JNIEnv* env = AttachCurrentThread();
@@ skipping 174 matching lines @@
   DVLOG(0) << "File Chooser result: mode = " << mode
            << ", file paths = " << base::JoinString(file_path_str, ":");
   rfh->FilesSelectedInChooser(files, mode);
 }
 
 bool RegisterAwWebContentsDelegate(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace android_webview