Migrate add to homescreen data fetcher to use InstallableManager.

chrome/browser/android/webapps/add_to_homescreen_dialog_helper.h

Index: chrome/browser/android/webapps/add_to_homescreen_dialog_helper.h
diff --git a/chrome/browser/android/webapps/add_to_homescreen_dialog_helper.h b/chrome/browser/android/webapps/add_to_homescreen_dialog_helper.h
index 3effb7b6b9a29f0c73c04b811a9d1e83ff2a7b0f..dd31d4c933a16ea68b70392bf7e9264d38a0c038 100644
--- a/chrome/browser/android/webapps/add_to_homescreen_dialog_helper.h
+++ b/chrome/browser/android/webapps/add_to_homescreen_dialog_helper.h
@@ -6,11 +6,12 @@
 #define CHROME_BROWSER_ANDROID_WEBAPPS_ADD_TO_HOMESCREEN_DIALOG_HELPER_H_
 
 #include "base/android/jni_android.h"
-#include "base/android/jni_weak_ref.h"
+#include "base/android/scoped_java_ref.h"
 #include "base/macros.h"
 #include "chrome/browser/android/shortcut_info.h"
 #include "chrome/browser/android/webapps/add_to_homescreen_data_fetcher.h"
 #include "content/public/common/manifest.h"
+#include "third_party/skia/include/core/SkBitmap.h"
 
 namespace content {
 class WebContents;