Revert "Improve the resolution of the menu item homescreen launch source metric."

chrome/browser/android/shortcut_info.cc

Index: chrome/browser/android/shortcut_info.cc
diff --git a/chrome/browser/android/shortcut_info.cc b/chrome/browser/android/shortcut_info.cc
index 817d877dcc2be2a5164ab4e19a1ebc38958c46c9..ebfe836114c5b38433ff14b347d6b7a1b90f896c 100644
--- a/chrome/browser/android/shortcut_info.cc
+++ b/chrome/browser/android/shortcut_info.cc
@@ -8,9 +8,10 @@ ShortcutInfo::ShortcutInfo(const GURL& shortcut_url)
     : url(shortcut_url),
       display(blink::WebDisplayModeBrowser),
       orientation(blink::WebScreenOrientationLockDefault),
-      source(SOURCE_ADD_TO_HOMESCREEN_SHORTCUT),
+      source(SOURCE_ADD_TO_HOMESCREEN),
       theme_color(content::Manifest::kInvalidOrMissingColor),
-      background_color(content::Manifest::kInvalidOrMissingColor) {}
+      background_color(content::Manifest::kInvalidOrMissingColor) {
+}
 
 ShortcutInfo::ShortcutInfo(const ShortcutInfo& other) = default;
 
@@ -41,14 +42,10 @@ void ShortcutInfo::UpdateFromManifest(const content::Manifest& manifest) {
   if (manifest.display != blink::WebDisplayModeUndefined)
     display = manifest.display;
 
-  // 'minimal-ui' is not yet supported (see crbug.com/604390). Otherwise, set
-  // the source to be standalone if appropriate.
-  if (manifest.display == blink::WebDisplayModeMinimalUi) {
+  // 'minimal-ui' is not yet supported, so fallback in this case.
+  // See crbug.com/604390.
+  if (manifest.display == blink::WebDisplayModeMinimalUi)
     display = blink::WebDisplayModeBrowser;
-  } else if (display == blink::WebDisplayModeStandalone ||
-             display == blink::WebDisplayModeFullscreen) {
-    source = SOURCE_ADD_TO_HOMESCREEN_STANDALONE;
-  }
 
   // Set the orientation based on the manifest value, if any.
   if (manifest.orientation != blink::WebScreenOrientationLockDefault) {