Reland "Android: Allow per-target lint suppression configuration"

This is a reland of 1dd22ad0
Original change's description:
> Android: Allow per-target lint suppression configuration
> 
> This change allows for Android lint suppression configurations
> to be defined on a per-target basis (assuming said target is
> "Android lint capable") rather than having one global config.
> This will allow embedders to keep upstream's lint config for
> Chromium targets (w/o patching), while using a separate config
> for the embedding application.
> 
> Bug: 737897
> Change-Id: Ieccb95767e0ce541522d7a53edbe734c5bbfe6dc
> Reviewed-on: https://chromium-review.googlesource.com/698297
> Reviewed-by: Andrew Grieve <agrieve@chromium.org>
> Commit-Queue: Andrew Grieve <agrieve@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#506393}

Bug: 737897
Change-Id: I4d1aecea7d4893f8f525d53a13b4044f27a17221
Reviewed-on: https://chromium-review.googlesource.com/701317Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Cr-Commit-Position: refs/heads/master@{#506862}

AUTHORS

@@ -397,6 +397,7 @@ Junchao Han <junchao.han@intel.com>
 JungJik Lee <jungjik.lee@samsung.com>
 Jungkee Song <jungkee.song@samsung.com>
 Junmin Zhu <junmin.zhu@intel.com>
+Justin Okamoto <justmoto@amazon.com>
 Kai Jiang <jiangkai@gmail.com>
 Kai Köhne <kai.koehne@qt.io>
 Kal Conley <kcconley@gmail.com>

build/config/android/internal_rules.gni

@@ -748,7 +748,9 @@ if (enable_java_templates) {
         deps = []
       }
 
-      if (!defined(lint_suppressions_file)) {
+      if (defined(invoker.lint_suppressions_file)) {
+        lint_suppressions_file = invoker.lint_suppressions_file
+      } else if (!defined(lint_suppressions_file)) {
         lint_suppressions_file = "//build/android/lint/suppressions.xml"
       }
 
@@ -2702,6 +2704,10 @@ if (enable_java_templates) {
       if (_chromium_code) {
         _has_lint_target = true
         android_lint("${_template_name}__lint") {
+          if (defined(invoker.lint_suppressions_file)) {
+            lint_suppressions_file = invoker.lint_suppressions_file
+          }
+
           android_manifest = _android_manifest
           build_config = _build_config