[Suggestions UI] Drop Bitmap references from articles under memory pressure.

base/BUILD.gn

Index: base/BUILD.gn
diff --git a/base/BUILD.gn b/base/BUILD.gn
index 7ab61ccc805069452f6364fba6b530fe9e25f1cf..11f9eeafb2ad21e8874e75cd15482a1228bf0a35 100644
--- a/base/BUILD.gn
+++ b/base/BUILD.gn
@@ -2507,6 +2507,7 @@ if (is_android) {
       "android/java/src/org/chromium/base/ContentUriUtils.java",
       "android/java/src/org/chromium/base/ContextUtils.java",
       "android/java/src/org/chromium/base/CpuFeatures.java",
+      "android/java/src/org/chromium/base/DiscardableReferencePool.java",
       "android/java/src/org/chromium/base/EarlyTraceEvent.java",
       "android/java/src/org/chromium/base/EventLog.java",
       "android/java/src/org/chromium/base/FieldTrialList.java",
@@ -2663,6 +2664,7 @@ if (is_android) {
   junit_binary("base_junit_tests") {
     java_files = [
       "android/junit/src/org/chromium/base/BaseChromiumApplicationTest.java",
+      "android/junit/src/org/chromium/base/DiscardableReferencePoolTest.java",
       "android/junit/src/org/chromium/base/LogTest.java",
       "android/junit/src/org/chromium/base/NonThreadSafeTest.java",
       "android/junit/src/org/chromium/base/PromiseTest.java",