Cleanup: move WebRTC related files from chrome/browser/media to chrome/browser/media/webrtc/

chrome/browser/media/webrtc/desktop_media_picker.h

Index: chrome/browser/media/webrtc/desktop_media_picker.h
diff --git a/chrome/browser/media/desktop_media_picker.h b/chrome/browser/media/webrtc/desktop_media_picker.h
similarity index 90%
rename from chrome/browser/media/desktop_media_picker.h
rename to chrome/browser/media/webrtc/desktop_media_picker.h
index 3312037f8d11df900ff92cc262a87648d4f1e506..d9c75423883280f44e9c0853d64a603433e35eba 100644
--- a/chrome/browser/media/desktop_media_picker.h
+++ b/chrome/browser/media/webrtc/desktop_media_picker.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_BROWSER_MEDIA_DESKTOP_MEDIA_PICKER_H_
-#define CHROME_BROWSER_MEDIA_DESKTOP_MEDIA_PICKER_H_
+#ifndef CHROME_BROWSER_MEDIA_WEBRTC_DESKTOP_MEDIA_PICKER_H_
+#define CHROME_BROWSER_MEDIA_WEBRTC_DESKTOP_MEDIA_PICKER_H_
 
 #include <memory>
 
@@ -51,4 +51,4 @@ class DesktopMediaPicker {
   DISALLOW_COPY_AND_ASSIGN(DesktopMediaPicker);
 };
 
-#endif  // CHROME_BROWSER_MEDIA_DESKTOP_MEDIA_PICKER_H_
+#endif  // CHROME_BROWSER_MEDIA_WEBRTC_DESKTOP_MEDIA_PICKER_H_