Desktop chrome tab capture-chooseDesktopMedia()

chrome/browser/media/desktop_media_list.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // 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_LIST_H_
 #define CHROME_BROWSER_MEDIA_DESKTOP_MEDIA_LIST_H_
 
 #include "base/basictypes.h"
 #include "base/strings/string16.h"
 #include "base/time/time.h"
 #include "content/public/browser/desktop_media_id.h"
+#include "ui/gfx/image/image.h"
 #include "ui/gfx/image/image_skia.h"
 
 class DesktopMediaListObserver;
 
 // DesktopMediaList provides the list of desktop media source (screens, windows,
 // tabs), and their thumbnails, to the desktop media picker dialog. It
 // transparently updates the list in the background, and notifies the desktop
 // media picker when something changes.
 class DesktopMediaList {
  public:
@@ skipping 27 matching lines @@
 
   // Starts updating the model. The model is initially empty, so OnSourceAdded()
   // notifications will be generated for each existing source as it is
   // enumerated. After the initial enumeration the model will be refreshed based
   // on the update period, and notifications generated only for changes in the
   // model.
   virtual void StartUpdating(DesktopMediaListObserver* observer) = 0;
 
   virtual int GetSourceCount() const = 0;
   virtual const Source& GetSource(int index) const = 0;
+
+ protected:
+  // Create a image with an enlarged favicon on its center and black boundary.
+  // If fails, an empty image will return.
+  // The function is used to create a thumbnail for chrome tab preview.
+  static gfx::ImageSkia CreateImageEncloseFavicon(gfx::Size size,

[miu, 2015/12/12 00:00:33]

naming nit: How about: CreateEnlargedFaviconImage()

+                                                  gfx::Image& favicon);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_DESKTOP_MEDIA_LIST_H_