Add CombinedDesktopMediaList.

chrome/browser/media/desktop_media_list_ash.cc

Index: chrome/browser/media/desktop_media_list_ash.cc
diff --git a/chrome/browser/media/desktop_media_list_ash.cc b/chrome/browser/media/desktop_media_list_ash.cc
index a9ab1a4224b0d9c05d9e9ecf0fe2c367df90dc2b..25fb5737cc73ff0af1dcce5cc276288c048c7d6f 100644
--- a/chrome/browser/media/desktop_media_list_ash.cc
+++ b/chrome/browser/media/desktop_media_list_ash.cc
@@ -96,7 +96,7 @@ void DesktopMediaListAsh::Refresh() {
   for (size_t i = 0; i < sources_.size(); ++i) {
     if (new_source_set.find(sources_[i].id) == new_source_set.end()) {
       sources_.erase(sources_.begin() + i);
-      observer_->OnSourceRemoved(i);
+      observer_->OnSourceRemoved(this, i);
       --i;
     }
   }
@@ -112,7 +112,7 @@ void DesktopMediaListAsh::Refresh() {
         sources_.insert(sources_.begin() + i, Source());
         sources_[i].id = new_sources[i].id;
         sources_[i].name = new_sources[i].name;
-        observer_->OnSourceAdded(i);
+        observer_->OnSourceAdded(this, i);
       }
     }
   }
@@ -136,12 +136,12 @@ void DesktopMediaListAsh::Refresh() {
       sources_.erase(sources_.begin() + old_pos);
       sources_.insert(sources_.begin() + pos, temp);
 
-      observer_->OnSourceMoved(old_pos, pos);
+      observer_->OnSourceMoved(this, old_pos, pos);
     }
 
     if (sources_[pos].name != new_sources[pos].name) {
       sources_[pos].name = new_sources[pos].name;
-      observer_->OnSourceNameChanged(pos);
+      observer_->OnSourceNameChanged(this, pos);
     }
     ++pos;
   }
@@ -236,7 +236,7 @@ void DesktopMediaListAsh::OnThumbnailCaptured(content::DesktopMediaID id,
   for (size_t i = 0; i < sources_.size(); ++i) {
     if (sources_[i].id == id) {
       sources_[i].thumbnail = image.AsImageSkia();
-      observer_->OnSourceThumbnailChanged(i);
+      observer_->OnSourceThumbnailChanged(this, i);
       break;
     }
   }