Add webview pinning trunk stable flag

Bug: 307594624
Change-Id: I8eb3c4eb68efe8b1e1706b5e1f5a711fcef82054

AconfigFlags.bp

@@ -53,6 +53,7 @@ aconfig_srcjars = [
     ":android.app.flags-aconfig-java{.generated_srcjars}",
     ":android.credentials.flags-aconfig-java{.generated_srcjars}",
     ":android.view.contentprotection.flags-aconfig-java{.generated_srcjars}",
+    ":com.android.server.flags.pinner-aconfig-java{.generated_srcjars}",
     ":android.service.voice.flags-aconfig-java{.generated_srcjars}",
     ":android.media.tv.flags-aconfig-java{.generated_srcjars}",
     ":android.service.autofill.flags-aconfig-java{.generated_srcjars}",
@@ -539,6 +540,19 @@ java_aconfig_library {
     defaults: ["framework-minus-apex-aconfig-java-defaults"],
 }
 
+// Pinner Service
+aconfig_declarations {
+    name: "com.android.server.flags.pinner-aconfig",
+    package: "com.android.server.flags",
+    srcs: ["services/core/java/com/android/server/flags/pinner.aconfig"],
+}
+
+java_aconfig_library {
+    name: "com.android.server.flags.pinner-aconfig-java",
+    aconfig_declarations: "com.android.server.flags.pinner-aconfig",
+    defaults: ["framework-minus-apex-aconfig-java-defaults"],
+}
+
 // Voice
 aconfig_declarations {
     name: "android.service.voice.flags-aconfig",

services/core/java/com/android/server/flags/OWNERS

+per-file pinner.aconfig = edgararriaga@google.com
\ No newline at end of file

services/core/java/com/android/server/flags/pinner.aconfig

+package: "com.android.server.flags"
+
+flag {
+    name: "pin_webview"
+    namespace: "system_performance"
+    description: "This flag controls if webview should be pinned in memory."
+    bug: "307594624"
+}
\ No newline at end of file