[Android] Upstreamed Stars UMA from iOS.

There are some UMA strings, enum constants in iOS repository
that can be shared with Android, so moved to components.

BUG=452254

Review URL: https://codereview.chromium.org/891493003

Cr-Commit-Position: refs/heads/master@{#314707}

2 files changed, 34 insertions, 0 deletions

diff --git a/components/enhanced_bookmarks/BUILD.gn b/components/enhanced_bookmarks/BUILD.gn
index 7ce7ed5..11462c4 100644
--- a/components/enhanced_bookmarks/BUILD.gn
+++ b/components/enhanced_bookmarks/BUILD.gn
@@ -2,6 +2,11 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+if (is_android) {
+  import("//build/config/android/config.gni")
+  import("//build/config/android/rules.gni")
+}
+
 # GYP: //components/enhanced_bookmarks.gypi:enhanced_bookmarks
 source_set("enhanced_bookmarks") {
   sources = [
@@ -49,6 +54,18 @@ source_set("enhanced_bookmarks") {
   }
 }
 
+if (is_android) {
+  # GYP: //components/enhanced_bookmarks.gypi:enhanced_bookmarks_launch_location_srcjar
+  java_cpp_enum("enhanced_bookmarks_launch_location_srcjar") {
+    sources = [
+      "enhanced_bookmark_utils.h",
+    ]
+    outputs = [
+      "org/chromium/chrome/browser/enhancedbookmark/LaunchLocation.java",
+    ]
+  }
+}
+
 # GYP: //components/enhanced_bookmarks.gypi:enhanced_bookmarks_test_support
 source_set("test_support") {
   testonly = true
diff --git a/components/enhanced_bookmarks/enhanced_bookmark_utils.h b/components/enhanced_bookmarks/enhanced_bookmark_utils.h
index 40b4a0b..f2ce4dc 100644
--- a/components/enhanced_bookmarks/enhanced_bookmark_utils.h
+++ b/components/enhanced_bookmarks/enhanced_bookmark_utils.h
@@ -16,6 +16,23 @@ class BookmarkNode;
 
 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 bookmarks::BookmarkNode*>& nodes);