mediaview: IPC definitions to watch for document changes.

components/arc/test/fake_file_system_instance.cc

Index: components/arc/test/fake_file_system_instance.cc
diff --git a/components/arc/test/fake_file_system_instance.cc b/components/arc/test/fake_file_system_instance.cc
index 040500df26b8c79119a2294826b8fabaacbc925c..9e75360c753c7aaf78a6ffe1e5b8b28ac14ecb66 100644
--- a/components/arc/test/fake_file_system_instance.cc
+++ b/components/arc/test/fake_file_system_instance.cc
@@ -115,6 +115,13 @@ void FakeFileSystemInstance::AddDocument(const Document& document) {
   }
 }
 
+void FakeFileSystemInstance::AddWatcher(const std::string& authority,
+                                        const std::string& document_id,
+                                        const AddWatcherCallback& callback) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  NOTIMPLEMENTED();
+}
+
 void FakeFileSystemInstance::GetFileSize(const std::string& url,
                                          const GetFileSizeCallback& callback) {
   DCHECK(thread_checker_.CalledOnValidThread());
@@ -194,6 +201,18 @@ void FakeFileSystemInstance::GetChildDocuments(
                  base::Passed(base::make_optional(std::move(children)))));
 }
 
+void FakeFileSystemInstance::Init(mojom::FileSystemHostPtr host) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  NOTIMPLEMENTED();
+}
+
+void FakeFileSystemInstance::RemoveWatcher(
+    int64_t watcher_id,
+    const RemoveWatcherCallback& callback) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  NOTIMPLEMENTED();
+}
+
 void FakeFileSystemInstance::RequestMediaScan(
     const std::vector<std::string>& paths) {
   DCHECK(thread_checker_.CalledOnValidThread());