Update buildroot and re-enable use of C++14 on Android x86. (#3096)

DEPS

@@ -45,7 +45,7 @@ allowed_hosts = [
 ]
 
 deps = {
-  'src': 'https://github.com/flutter/buildroot.git' + '@' + 'f0e80ac2a4abfd5af99c57e2da3a1b0f87aecb92',
+  'src': 'https://github.com/flutter/buildroot.git' + '@' + '9dcb5b06fe497f1bfd563e2c9293161070d5340c',
 
    # Fuchsia compatibility
    #

shell/platform/android/platform_view_android.cc

@@ -24,6 +24,7 @@
 #include "flutter/shell/common/engine.h"
 #include "flutter/shell/common/shell.h"
 #include "jni/FlutterView_jni.h"
+#include "lib/ftl/functional/wrap_lambda.h"
 #include "third_party/skia/include/core/SkSurface.h"
 
 namespace shell {
@@ -430,13 +431,13 @@ void PlatformViewAndroid::DispatchPointerDataPacket(JNIEnv* env,
                                                     jint position) {
   char* data = static_cast<char*>(env->GetDirectBufferAddress(buffer));
 
-  auto engine = engine_->GetWeakPtr();
-  PointerDataPacket* packet = new PointerDataPacket(data, position);
-  blink::Threads::UI()->PostTask([engine, packet] {
+  blink::Threads::UI()->PostTask(ftl::WrapLambda([
+    engine = engine_->GetWeakPtr(),
+    packet = std::make_unique<PointerDataPacket>(data, position)
+  ] {
     if (engine.get())
       engine->HandlePointerDataPacket(*packet);
-    delete packet;
-  });
+  }));
 }
 
 void PlatformViewAndroid::ReleaseSurface() {