[Android] Upstreamed Stars UMA from iOS.

components/enhanced_bookmarks/enhanced_bookmark_utils.h

Index: components/enhanced_bookmarks/enhanced_bookmark_utils.h
diff --git a/components/enhanced_bookmarks/enhanced_bookmark_utils.h b/components/enhanced_bookmarks/enhanced_bookmark_utils.h
index dc9cf3c85665fda96c7a4b5fef3b465e04ce0b46..1ab8b12c1e8f94d2e2bec2f9a9ac9e5fcaa18d7e 100644
--- a/components/enhanced_bookmarks/enhanced_bookmark_utils.h
+++ b/components/enhanced_bookmarks/enhanced_bookmark_utils.h
@@ -17,6 +17,23 @@ class BookmarkModel;
 
 namespace enhanced_bookmarks {
 
+static const char kLaunchLocationUMA[] = "Stars.LaunchLocation";
+
+// Possible locations where a bookmark can be opened from.
+// Please sync with the corresponding histograms.xml.
+//
+// A Java counterpart will be generated for this enum.
+// GENERATED_JAVA_ENUM_PACKAGE: org.chromium.chrome.browser.enhancedbookmark
+enum LaunchLocation {
+  ALL_ITEMS = 0,
+  UNCATEGORIZED = 1,  // Deprecated.
+  FOLDER = 2,
+  FILTER = 3,
+  SEARCH = 4,
+  BOOKMARK_EDITOR = 5,
+  COUNT = 6,
+};
+
 // The vector is sorted in place.
 // All of the bookmarks in |nodes| must be urls.
 void SortBookmarksByName(std::vector<const BookmarkNode*>& nodes);