chromeos: Fix pixelated icons in app list and launcher (part 3)

- Use extensions::IconImage for HiDPI icons;
- Fix IconImage use default icon for bundled component extension icon;
- Fix ImageLoadingTracker does not properly resize bundled component extension
  icon;
- Get rid of icon cache and work thread for shadow generation. We are using
  the exact icon size (smaller) and only generate shadow for visible ones.
  Thus, it is no longer needed.

BUG=131738, 131739
TEST=Verify launcher and app list have crispy icons on HiDPI.

Review URL: https://chromiumcodereview.appspot.com/10868003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@155939 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 0 insertions, 7 deletions

diff --git a/ash/wm/app_list_controller.cc b/ash/wm/app_list_controller.cc
index 468a97b..5ae14a9 100644
--- a/ash/wm/app_list_controller.cc
+++ b/ash/wm/app_list_controller.cc
@@ -12,7 +12,6 @@
 #include "ash/wm/property_util.h"
 #include "ash/wm/shelf_layout_manager.h"
 #include "ui/app_list/app_list_view.h"
-#include "ui/app_list/icon_cache.h"
 #include "ui/app_list/pagination_model.h"
 #include "ui/aura/focus_manager.h"
 #include "ui/aura/root_window.h"
@@ -87,7 +86,6 @@ AppListController::AppListController()
     : pagination_model_(new app_list::PaginationModel),
       is_visible_(false),
       view_(NULL) {
-  app_list::IconCache::CreateInstance();
   Shell::GetInstance()->AddShellObserver(this);
 }
 
@@ -97,7 +95,6 @@ AppListController::~AppListController() {
   if (view_ && view_->GetWidget())
     view_->GetWidget()->CloseNow();
 
-  app_list::IconCache::DeleteInstance();
   Shell::GetInstance()->RemoveShellObserver(this);
 }
 
@@ -144,8 +141,6 @@ void AppListController::SetView(app_list::AppListView* view) {
   DCHECK(view_ == NULL);
 
   if (is_visible_) {
-    app_list::IconCache::GetInstance()->MarkAllEntryUnused();
-
     view_ = view;
     views::Widget* widget = view_->GetWidget();
     widget->AddObserver(this);
@@ -174,8 +169,6 @@ void AppListController::ResetView() {
   widget->GetNativeView()->GetRootWindow()->RemoveRootWindowObserver(this);
   widget->GetNativeView()->GetFocusManager()->RemoveObserver(this);
   view_ = NULL;
-
-  app_list::IconCache::GetInstance()->PurgeAllUnused();
 }
 
 void AppListController::ScheduleAnimation() {