Use the ELF loader to setup AOT symbols in benchmark runner. (flutter#17051)

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

Fixes 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",