Fixes for -Wunused-function on Linux, Android and ChromeOS

chrome/browser/chromeos/extensions/file_manager/event_router.cc

Index: chrome/browser/chromeos/extensions/file_manager/event_router.cc
diff --git a/chrome/browser/chromeos/extensions/file_manager/event_router.cc b/chrome/browser/chromeos/extensions/file_manager/event_router.cc
index 39714efa619ff4e3b8599da61df0ba6fd7b86434..675e444add05d3de9462dd9e95c1de4be9a314a5 100644
--- a/chrome/browser/chromeos/extensions/file_manager/event_router.cc
+++ b/chrome/browser/chromeos/extensions/file_manager/event_router.cc
@@ -54,10 +54,6 @@ namespace {
 const char kPathChanged[] = "changed";
 const char kPathWatchError[] = "error";
 
-// Used as a callback for FileSystem::MarkCacheFileAsUnmounted().
-void OnMarkAsUnmounted(drive::FileError error) {
-  // Do nothing.
-}
 void DirectoryExistsOnBlockingPool(const base::FilePath& directory_path,
                                    const base::Closure& success_callback,
                                    const base::Closure& failure_callback) {
@@ -82,23 +78,6 @@ void DirectoryExistsOnUIThread(const base::FilePath& directory_path,
                  failure_callback));
 };
 
-// Creates a base::FilePathWatcher and starts watching at |watch_path| with
-// |callback|. Returns NULL on failure.
-base::FilePathWatcher* CreateAndStartFilePathWatcher(
-    const base::FilePath& watch_path,
-    const base::FilePathWatcher::Callback& callback) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
-  DCHECK(!callback.is_null());
-
-  base::FilePathWatcher* watcher(new base::FilePathWatcher);
-  if (!watcher->Watch(watch_path, false /* recursive */, callback)) {
-    delete watcher;
-    return NULL;
-  }
-
-  return watcher;
-}
-
 // Constants for the "transferState" field of onFileTransferUpdated event.
 const char kFileTransferStateStarted[] = "started";
 const char kFileTransferStateInProgress[] = "in_progress";
@@ -114,11 +93,6 @@ bool IsUploadJob(drive::JobType type) {
           type == drive::TYPE_UPLOAD_EXISTING_FILE);
 }
 
-// Utility function to check if |job_info| is a file downloading job.
-bool IsDownloadJob(drive::JobType type) {
-  return type == drive::TYPE_DOWNLOAD_FILE;
-}
-
 // Converts the job info to its JSON (Value) form.
 scoped_ptr<base::DictionaryValue> JobInfoToDictionaryValue(
     const std::string& extension_id,