Correctly record WebAPK install source for Launch.HomescreenSource

chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappInfo.java

Index: chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappInfo.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappInfo.java b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappInfo.java
index 949ece8ca28bf62dd7d23eed66bed2d6ddd097af..e0beb6a4f711d43178f8d5ad73b32d09cadd54a3 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappInfo.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappInfo.java
@@ -75,9 +75,8 @@ public class WebappInfo {
         return IntentUtils.safeGetStringExtra(intent, ShortcutHelper.EXTRA_URL);
     }
 
-    protected static int sourceFromIntent(Intent intent) {
-        return IntentUtils.safeGetIntExtra(
-                intent, ShortcutHelper.EXTRA_SOURCE, ShortcutSource.UNKNOWN);
+    protected static int sourceFromIntent(Intent intent, int defaultSource) {
+        return IntentUtils.safeGetIntExtra(intent, ShortcutHelper.EXTRA_SOURCE, defaultSource);
     }
 
     private static String titleFromIntent(Intent intent) {
@@ -111,7 +110,7 @@ public class WebappInfo {
                 intent, ShortcutHelper.EXTRA_DISPLAY_MODE, WebDisplayMode.STANDALONE);
         int orientation = IntentUtils.safeGetIntExtra(
                 intent, ShortcutHelper.EXTRA_ORIENTATION, ScreenOrientationValues.DEFAULT);
-        int source = sourceFromIntent(intent);
+        int source = sourceFromIntent(intent, ShortcutSource.UNKNOWN);
         long themeColor = IntentUtils.safeGetLongExtra(intent,
                 ShortcutHelper.EXTRA_THEME_COLOR,
                 ShortcutHelper.MANIFEST_COLOR_INVALID_OR_MISSING);