[Media Galleries] Lazily initialize the storage monitor.

chrome/browser/media_galleries/media_file_system_registry_unittest.cc

Index: chrome/browser/media_galleries/media_file_system_registry_unittest.cc
diff --git a/chrome/browser/media_galleries/media_file_system_registry_unittest.cc b/chrome/browser/media_galleries/media_file_system_registry_unittest.cc
index 10db660818ae92265d2333e66d6aab0e638ea5de..886eff3e3aa9e60499bc47b2f23cb42a72ebb39b 100644
--- a/chrome/browser/media_galleries/media_file_system_registry_unittest.cc
+++ b/chrome/browser/media_galleries/media_file_system_registry_unittest.cc
@@ -17,6 +17,7 @@
 #include "base/run_loop.h"
 #include "base/stl_util.h"
 #include "base/stringprintf.h"
+#include "base/synchronization/waitable_event.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
@@ -291,6 +292,8 @@ class MediaFileSystemRegistryTest : public ChromeRenderViewHostTestHarness {
 
   ProfileState* GetProfileState(size_t i);
 
+  MediaGalleriesPreferences* GetPreferences(Profile* profile);
+
   base::FilePath empty_dir() {
     return empty_dir_;
   }
@@ -382,7 +385,7 @@ class MediaFileSystemRegistryTest : public ChromeRenderViewHostTestHarness {
 #if defined(OS_WIN)
   scoped_ptr<test::TestStorageMonitorWin> monitor_;
 #else
-  chrome::test::TestStorageMonitor monitor_;
+  scoped_ptr<chrome::test::TestStorageMonitor> monitor_;
 #endif
 
   MockProfileSharedRenderProcessHostFactory rph_factory_;
@@ -593,6 +596,11 @@ ProfileState* MediaFileSystemRegistryTest::GetProfileState(size_t i) {
   return profile_states_[i];
 }
 
+MediaGalleriesPreferences* MediaFileSystemRegistryTest::GetPreferences(
+    Profile* profile) {
+  return GetMediaFileSystemRegistry()->GetPreferences(profile);

[vandebo (ex-Chrome), 2013/05/22 21:40:34]

Isn't this a recursive call?

[Greg Billock, 2013/05/23 00:55:59]

No, this is in the test. ;-)

+}
+
 std::string MediaFileSystemRegistryTest::AddUserGallery(
     StorageInfo::Type type,
     const std::string& unique_id,
@@ -720,7 +728,15 @@ MediaFileSystemRegistryTest::GetAutoAddedGalleries(
 }
 
 void MediaFileSystemRegistryTest::SetUp() {
-#if defined(OS_WIN)
+#if !defined(OS_WIN)
+  monitor_.reset(new test::TestStorageMonitor());

[vandebo (ex-Chrome), 2013/05/22 21:40:34]

Looks like the waitable event found it's way back.

[Greg Billock, 2013/05/23 00:55:59]

Grrr. I must have branched without checking in some stuff or something stupid.

+  base::WaitableEvent wait_for_init(false, false);
+  monitor_->Initialize(base::Bind(&base::WaitableEvent::Signal,
+                                  base::Unretained(&wait_for_init)));
+  monitor_->MarkInitialized();
+  base::RunLoop().RunUntilIdle();
+  DCHECK(wait_for_init.IsSignaled());
+#else
   test::TestPortableDeviceWatcherWin* portable_device_watcher =
       new test::TestPortableDeviceWatcherWin;
   test::TestVolumeMountWatcherWin* mount_watcher =
@@ -728,7 +744,10 @@ void MediaFileSystemRegistryTest::SetUp() {
   portable_device_watcher->set_use_dummy_mtp_storage_info(true);
   monitor_.reset(new test::TestStorageMonitorWin(
       mount_watcher, portable_device_watcher));
-  monitor_->Init();
+  base::WaitableEvent wait_for_init(false, false);
+  wait_for_init.Reset();
+  monitor_->Initialize(base::Bind(&base::WaitableEvent::Signal,
+                                 base::Unretained(&wait_for_init)));
   // TODO(gbillock): Replace this with the correct event notification
   // on the storage monitor finishing the startup scan when that exists.
   base::RunLoop().RunUntilIdle();
@@ -736,6 +755,7 @@ void MediaFileSystemRegistryTest::SetUp() {
   base::RunLoop().RunUntilIdle();
   mount_watcher->FlushWorkerPoolForTesting();
   base::RunLoop().RunUntilIdle();
+  DCHECK(wait_for_init.IsSignaled());
 #endif
 
   ChromeRenderViewHostTestHarness::SetUp();
@@ -850,8 +870,7 @@ TEST_F(MediaFileSystemRegistryTest,
 
   // Forget the device.
   bool forget_gallery = false;
-  MediaGalleriesPreferences* prefs =
-      GetMediaFileSystemRegistry()->GetPreferences(profile_state->profile());
+  MediaGalleriesPreferences* prefs = GetPreferences(profile_state->profile());
   const MediaGalleriesPrefInfoMap& galleries = prefs->known_galleries();
   for (MediaGalleriesPrefInfoMap::const_iterator it = galleries.begin();
        it != galleries.end(); ++it) {
@@ -866,7 +885,7 @@ TEST_F(MediaFileSystemRegistryTest,
   EXPECT_EQ(gallery_count, GetAutoAddedGalleries(profile_state).size());
 
   // Call GetPreferences() and the gallery count should not change.
-  GetMediaFileSystemRegistry()->GetPreferences(profile_state->profile());
+  prefs = GetPreferences(profile_state->profile());
   EXPECT_EQ(gallery_count, GetAutoAddedGalleries(profile_state).size());
 }
 
@@ -884,7 +903,7 @@ TEST_F(MediaFileSystemRegistryTest, GalleryNameDefault) {
 
 // TODO(gbillock): Put the platform-specific parts of this test in tests
 // for those classes, not here. This test, internally, ends up creating an
-// MTP delegate.
+// MTP delegate. (Probably ./win/mtp_device_delegate_impl_win_unittest)
 #if !defined(OS_MACOSX)
 TEST_F(MediaFileSystemRegistryTest, GalleryNameMTP) {
   FSInfoMap galleries_info;