Revert 52336 - More header cleanup:

- Some cleanup to url_request.h
- Remove task.h from headers that don't need it.
- Remove histogram.h from message_loop.h

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/2986002

TBR=erg@chromium.org
Review URL: http://codereview.chromium.org/2969006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@52343 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 18 insertions, 0 deletions

diff --git a/chrome/browser/download/download_util.h b/chrome/browser/download/download_util.h
index 6ee8f89..dee3600 100644
--- a/chrome/browser/download/download_util.h
+++ b/chrome/browser/download/download_util.h
@@ -11,6 +11,7 @@
 #include <string>
 
 #include "base/basictypes.h"
+#include "base/task.h"
 #include "gfx/native_widget_types.h"
 
 #if defined(TOOLKIT_VIEWS)
@@ -29,6 +30,23 @@ class SkBitmap;
 
 namespace download_util {
 
+// DownloadProgressTask --------------------------------------------------------
+
+// A class for managing the timed progress animations for a download view. The
+// view must implement an UpdateDownloadProgress() method.
+template<class DownloadView>
+class DownloadProgressTask : public Task {
+ public:
+  explicit DownloadProgressTask(DownloadView* view) : view_(view) {}
+  virtual ~DownloadProgressTask() {}
+  virtual void Run() {
+    view_->UpdateDownloadProgress();
+  }
+ private:
+  DownloadView* view_;
+  DISALLOW_COPY_AND_ASSIGN(DownloadProgressTask);
+};
+
 // Download opening ------------------------------------------------------------
 
 // Whether it is OK to open this download.