WebView: Add channel info for UMA

components/version_info/BUILD.gn

Index: components/version_info/BUILD.gn
diff --git a/components/version_info/BUILD.gn b/components/version_info/BUILD.gn
index 1fe5cfb1cad536d2504482ea82cd8dd58f76b988..17b24f412aebba9198c717dd4a30eea65400ff77 100644
--- a/components/version_info/BUILD.gn
+++ b/components/version_info/BUILD.gn
@@ -19,12 +19,24 @@ static_library("version_info") {
   deps = [
     ":generate_version_info",
     "//base",
-    "//components/strings",
   ]
 
   public_deps = [
     ":channel",
   ]
+}
+
+# Isolate the //ui/base dependency in this target.
+static_library("version_string") {
+  sources = [
+    "version_string.cc",
+    "version_string.h",
+  ]
+
+  deps = [
+    ":version_info",
+    "//components/strings",
+  ]
 
   if (use_unofficial_version_number) {
     defines = [ "USE_UNOFFICIAL_VERSION_NUMBER" ]
@@ -35,6 +47,8 @@ static_library("version_info") {
 source_set("channel") {
   sources = [
     "channel.h",
+    "channel_android.cc",
+    "channel_android.h",
   ]
 }