WIP - Control the lifetime of RenderThreadManager from Java.

android_webview/BUILD.gn

Index: android_webview/BUILD.gn
diff --git a/android_webview/BUILD.gn b/android_webview/BUILD.gn
index 65fd6db8c7e25dec30545d588a6238cc8550fd64..e7e8aef1bcd90967061c0a78f14723dfa0aaab8a 100644
--- a/android_webview/BUILD.gn
+++ b/android_webview/BUILD.gn
@@ -648,6 +648,7 @@ android_library("android_webview_java") {
     "java/src/org/chromium/android_webview/PlatformServiceBridge.java",
     "java/src/org/chromium/android_webview/PostMessageSender.java",
     "java/src/org/chromium/android_webview/ScrollAccessibilityHelper.java",
+    "java/src/org/chromium/android_webview/AwGLFunctor.java",
     "java/src/org/chromium/android_webview/SslUtil.java",
     "java/src/org/chromium/android_webview/permission/AwGeolocationCallback.java",
     "java/src/org/chromium/android_webview/permission/AwPermissionRequest.java",