Use the ELF loader to setup AOT symbols in benchmark runner.

We no longer package AOT artifacts as discrete blobs. The portable ELF loader
from the testing library may be used instead.

Fixes flutter/flutter#52263

Author: chinmaygarde

lib/ui/BUILD.gn

@@ -175,10 +175,7 @@ if (current_toolchain == host_toolchain) {
       ":ui",
       ":ui_unittests_fixtures",
       "//flutter/common",
-      "//flutter/fml",
-      "//flutter/lib/snapshot",
-      "//flutter/runtime",
-      "//flutter/shell/common",
+      "//flutter/testing",
       "//flutter/testing:dart",
       "//flutter/testing:opengl",
       "//flutter/third_party/tonic",

runtime/BUILD.gn

@@ -150,6 +150,7 @@ source_set("runtime_unittests_common") {
     "//flutter/fml",
     "//flutter/lib/snapshot",
     "//flutter/shell/common",
+    "//flutter/testing",
     "//flutter/testing:dart",
     "//flutter/third_party/tonic",
     "//third_party/dart/runtime/bin:elf_loader",

shell/common/BUILD.gn

@@ -209,6 +209,7 @@ if (enable_unittests) {
       "//flutter/fml/dart",
       "//flutter/lib/ui:ui",
       "//flutter/shell",
+      "//flutter/testing",
       "//flutter/testing:dart",
     ]
 
@@ -278,6 +279,7 @@ if (enable_unittests) {
     deps = [
       ":shell_unittests_fixtures",
       "//flutter/benchmarking",
+      "//flutter/testing:dart",
       "//flutter/testing:testing_lib",
     ]
   }

shell/common/shell_benchmarks.cc

@@ -7,6 +7,7 @@
 #include "flutter/runtime/dart_vm.h"
 #include "flutter/shell/common/shell.h"
 #include "flutter/shell/common/thread_host.h"
+#include "flutter/testing/elf_loader.h"
 #include "flutter/testing/testing.h"
 
 namespace flutter {
@@ -18,32 +19,19 @@ static void StartupAndShutdownShell(benchmark::State& state,
                                        fml::FilePermission::kRead);
   std::unique_ptr<Shell> shell;
   std::unique_ptr<ThreadHost> thread_host;
+  testing::ELFAOTSymbols aot_symbols;
+
   {
     benchmarking::ScopedPauseTiming pause(state, !measure_startup);
     Settings settings = {};
     settings.task_observer_add = [](intptr_t, fml::closure) {};
     settings.task_observer_remove = [](intptr_t) {};
 
     if (DartVM::IsRunningPrecompiledCode()) {
-      settings.vm_snapshot_data = [&]() {
-        return fml::FileMapping::CreateReadOnly(assets_dir, "vm_snapshot_data");
-      };
-
-      settings.isolate_snapshot_data = [&]() {
-        return fml::FileMapping::CreateReadOnly(assets_dir,
-                                                "isolate_snapshot_data");
-      };
-
-      settings.vm_snapshot_instr = [&]() {
-        return fml::FileMapping::CreateReadExecute(assets_dir,
-                                                   "vm_snapshot_instr");
-      };
-
-      settings.isolate_snapshot_instr = [&]() {
-        return fml::FileMapping::CreateReadExecute(assets_dir,
-                                                   "isolate_snapshot_instr");
-      };
-
+      aot_symbols = testing::LoadELFSymbolFromFixturesIfNeccessary();
+      FML_CHECK(
+          testing::PrepareSettingsForAOTWithSymbols(settings, aot_symbols))
+          << "Could not setup settings with AOT symbols.";
     } else {
       settings.application_kernels = [&]() {
         std::vector<std::unique_ptr<const fml::Mapping>> kernel_mappings;

shell/platform/embedder/BUILD.gn

@@ -137,6 +137,7 @@ if (current_toolchain == host_toolchain) {
       "//flutter/flow",
       "//flutter/lib/ui",
       "//flutter/runtime",
+      "//flutter/testing",
       "//flutter/testing:dart",
       "//flutter/testing:opengl",
       "//flutter/testing:skia",

testing/BUILD.gn

@@ -52,7 +52,7 @@ source_set("dart") {
   ]
 
   public_deps = [
-    ":testing",
+    ":testing_lib",
     "//flutter/common",
     "//flutter/runtime",
     "//flutter/runtime:libdart",