Remove calls to IsRunningSequenceOnCurrentThread() in wallpaper API.

chrome/browser/chromeos/extensions/wallpaper_api.cc

Index: chrome/browser/chromeos/extensions/wallpaper_api.cc
diff --git a/chrome/browser/chromeos/extensions/wallpaper_api.cc b/chrome/browser/chromeos/extensions/wallpaper_api.cc
index 21025b55a852b387b83ddf252af0cf77d5119322..3d595d96e130765a4fd3e8c336fafb69f5b4514d 100644
--- a/chrome/browser/chromeos/extensions/wallpaper_api.cc
+++ b/chrome/browser/chromeos/extensions/wallpaper_api.cc
@@ -10,6 +10,7 @@
 
 #include "base/files/file_util.h"
 #include "base/lazy_instance.h"
+#include "base/logging.h"

[bshe, 2016/09/14 13:33:07]

nit: doesn't look like this header is needed?

[fdoray, 2016/09/14 14:04:03]

yes, needed at line 65

 #include "base/memory/ref_counted_memory.h"
 #include "base/strings/stringprintf.h"
 #include "base/threading/worker_pool.h"
@@ -153,11 +154,11 @@ void WallpaperSetWallpaperFunction::OnWallpaperDecoded(
       wallpaper::kThumbnailWallpaperSubDir, wallpaper_files_id_,
       params_->details.filename);
 
-  sequence_token_ = BrowserThread::GetBlockingPool()->GetNamedSequenceToken(
-      wallpaper::kWallpaperSequenceTokenName);
   scoped_refptr<base::SequencedTaskRunner> task_runner =
-      BrowserThread::GetBlockingPool()->
-          GetSequencedTaskRunnerWithShutdownBehavior(sequence_token_,
+      BrowserThread::GetBlockingPool()
+          ->GetSequencedTaskRunnerWithShutdownBehavior(
+              BrowserThread::GetBlockingPool()->GetNamedSequenceToken(
+                  wallpaper::kWallpaperSequenceTokenName),
               base::SequencedWorkerPool::BLOCK_SHUTDOWN);
   wallpaper::WallpaperLayout layout = wallpaper_api_util::GetLayoutEnum(
       extensions::api::wallpaper::ToString(params_->details.layout));
@@ -203,8 +204,7 @@ void WallpaperSetWallpaperFunction::OnWallpaperDecoded(
 void WallpaperSetWallpaperFunction::GenerateThumbnail(
     const base::FilePath& thumbnail_path,
     std::unique_ptr<gfx::ImageSkia> image) {
-  DCHECK(BrowserThread::GetBlockingPool()->IsRunningSequenceOnCurrentThread(
-      sequence_token_));
+  wallpaper::AssertCalledOnWallpaperSequence();
   if (!base::PathExists(thumbnail_path.DirName()))
     base::CreateDirectory(thumbnail_path.DirName());