Remove old webui History page on desktop and mobile

chrome/browser/ui/history_ui.h

Index: chrome/browser/ui/history_ui.h
diff --git a/chrome/browser/ui/history_ui.h b/chrome/browser/ui/history_ui.h
new file mode 100644
index 0000000000000000000000000000000000000000..d831c5989a4abd6f143a0de7db7a4297aaac9865
--- /dev/null
+++ b/chrome/browser/ui/history_ui.h
@@ -0,0 +1,18 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.

[sky, 2017/04/27 22:41:04]

I like keeping this closer to where it is used. How come you want to move it out
of webui?

[Dan Beam, 2017/04/28 03:17:45]

because the Android _native_ UI also needs a favicon, and is not a "web" UI. 
but they're both parts of Chrome's browser UI, so I moved it to
chrome/browser/ui/.

[sky, 2017/04/28 17:43:54]

Ok, make sense.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_UI_HISTORY_UI_H_
+#define CHROME_BROWSER_UI_HISTORY_UI_H_
+
+#include "ui/base/layout.h"
+
+namespace base {
+class RefCountedMemory;
+}
+
+namespace history_ui {
+base::RefCountedMemory* GetFaviconResourceBytes(ui::ScaleFactor scale_factor);
+}
+
+#endif  // CHROME_BROWSER_UI_HISTORY_UI_H_