Forward GN variable lint_baseline_file if specified for a

chrome_public_apk_or_module_tmpl template instantiation for an Android
target

Additionally, add default values for lint_suppressions_file and
lint_baseline_file inside the chrome_public_common_apk_or_module_tmpl
template definition when linting is enabled.

Change-Id: I2feb9c0b26c133588495c523284b4ef7e9df5120
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2391077
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Cr-Commit-Position: refs/heads/master@{#804930}

chrome/android/BUILD.gn

@@ -1942,6 +1942,7 @@ template("chrome_public_apk_or_module_tmpl") {
                              "target_type",
                              "enable_lint",
                              "enable_multidex",
+                             "lint_baseline_file",
                              "lint_suppressions_dep",
                              "lint_suppressions_file",
                            ])

chrome/android/chrome_public_apk_tmpl.gni

@@ -369,6 +369,18 @@ template("chrome_public_common_apk_or_module_tmpl") {
 
     deps += [ "//chrome/android:chrome_all_java" ]
 
+    # Use a consistent baseline so that it is easy to regenerate by deleting the
+    # file and re-building the "android_lint" target.
+    if (defined(enable_lint) && enable_lint) {
+      if (!defined(lint_baseline_file)) {
+        lint_baseline_file = "//chrome/android/expectations/lint-baseline.xml"
+      }
+      if (!defined(lint_suppressions_file)) {
+        lint_suppressions_file =
+            "//chrome/android/expectations/lint-suppressions.xml"
+      }
+    }
+
     # Prefer to add this data_dep on the final target instead of java targets
     # like chrome_all_java so that all other targets can build in parallel with
     # lint.