Changed api to notify when watched directory is deleted.

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

Index: chrome/browser/chromeos/extensions/file_manager/event_router.h
diff --git a/chrome/browser/chromeos/extensions/file_manager/event_router.h b/chrome/browser/chromeos/extensions/file_manager/event_router.h
index 205591e63b2ff078ceac6e07d013ced11872c04a..5381d03dfdd2176c5e8d252aea6b4be8ae705b08 100644
--- a/chrome/browser/chromeos/extensions/file_manager/event_router.h
+++ b/chrome/browser/chromeos/extensions/file_manager/event_router.h
@@ -7,6 +7,7 @@
 
 #include <map>
 #include <string>
+#include <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
@@ -57,6 +58,13 @@ class EventRouter : public KeyedService,
                     public VolumeManagerObserver,
                     public content::NotificationObserver {
  public:
+  typedef base::Callback<void
+      (const base::FilePath& virtual_path,
+       const drive::FileChange* list,
+       bool got_error,
+       const std::vector<std::string>& extension_ids)>
+      DispatchDirectoryChangeEventImplCallback;
+
   explicit EventRouter(Profile* profile);
   virtual ~EventRouter();
 
@@ -132,6 +140,10 @@ class EventRouter : public KeyedService,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) override;
 
+  // Set custom dispatch directory change event implementation for testing.
+  void SetDispatchDirectoryChangeEventImplForTesting(
+      const DispatchDirectoryChangeEventImplCallback& callback);
+
  private:
   typedef std::map<base::FilePath, FileWatcher*> WatcherMap;
 
@@ -153,6 +165,12 @@ class EventRouter : public KeyedService,
       bool got_error,
       const std::vector<std::string>& extension_ids);
 
+  void DispatchDirectoryChangeEventImpl(

[mtomasz, 2014/10/17 05:26:56]

nit: Comment is missing.

[yawano, 2014/10/20 00:49:48]

Done.

+      const base::FilePath& path,
+      const drive::FileChange* list,
+      bool got_error,
+      const std::vector<std::string>& extension_ids);
+
   // Sends directory change event, after converting the file definition to entry
   // definition.
   void DispatchDirectoryChangeEventWithEntryDefinition(
@@ -213,6 +231,10 @@ class EventRouter : public KeyedService,
   // Note: This should remain the last member so it'll be destroyed and
   // invalidate the weak pointers before any other members are destroyed.
   base::WeakPtrFactory<EventRouter> weak_factory_;

[mtomasz, 2014/10/17 05:26:56]

Please keep weak_factory_ as the last member. See the comment for it.

[yawano, 2014/10/20 00:49:48]

Done.

+
+  DispatchDirectoryChangeEventImplCallback

[mtomasz, 2014/10/17 05:26:56]

(No need for a comment for trivial members).

[yawano, 2014/10/20 00:49:48]

Acknowledged.

+      dispatch_directory_change_event_impl_;
+
   DISALLOW_COPY_AND_ASSIGN(EventRouter);
 };