Make WebAPK use "start URL longest path" as the scope if the scope is missing

chrome/browser/android/shortcut_helper.cc

 // Copyright 2013 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 "chrome/browser/android/shortcut_helper.h"
 
 #include <jni.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
@@ skipping 265 matching lines @@
 }
 
 // static
 bool ShortcutHelper::IsWebApkInstalled(const GURL& url) {
   JNIEnv* env = base::android::AttachCurrentThread();
   ScopedJavaLocalRef<jstring> java_url =
       base::android::ConvertUTF8ToJavaString(env, url.spec());
   return Java_ShortcutHelper_isWebApkInstalled(env, java_url.obj());
 }
 
+GURL ShortcutHelper::GetScopeFromURL(const GURL& url) {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  ScopedJavaLocalRef<jstring> java_url =
+      base::android::ConvertUTF8ToJavaString(env, url.spec());
+  ScopedJavaLocalRef<jstring> java_scope_url =
+      Java_ShortcutHelper_getScopeFromUrl(env, java_url.obj());
+  return GURL(base::android::ConvertJavaStringToUTF16(env, java_scope_url));
+}
+
 // Callback used by Java when the shortcut has been created.
 // |splash_image_callback| is a pointer to a base::Closure allocated in
 // AddShortcutInBackgroundWithSkBitmap, so reinterpret_cast it back and run it.
 //
 // This callback should only ever be called when the shortcut was for a
 // webapp-capable site; otherwise, |splash_image_callback| will have never been
 // allocated and doesn't need to be run or deleted.
 void OnWebappDataStored(JNIEnv* env,
                         const JavaParamRef<jclass>& clazz,
                         jlong jsplash_image_callback) {
   DCHECK(jsplash_image_callback);
   base::Closure* splash_image_callback =
       reinterpret_cast<base::Closure*>(jsplash_image_callback);
   splash_image_callback->Run();
   delete splash_image_callback;
 }
 
 bool ShortcutHelper::RegisterShortcutHelper(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }