Fix building ASAN instrumented executables with custom entrypoints

chrome/installer/mini_installer/BUILD.gn

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/compiler/compiler.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/process_version_rc_template.gni")
 import("//chrome/test/mini_installer/mini_installer_test.gni")
 import("//third_party/icu/config.gni")
@@ skipping 221 matching lines @@
     ]
     configs += [
       ":mini_installer_compiler_flags",
       "//build/config/compiler:optimize_no_wpo",
       "//build/config/sanitizers:link_executable",
       "//build/config/win:sdk_link",
       "//build/config/win:windowed",
     ]
 
     ldflags = [
-      "/ENTRY:MainEntryPoint",
       "/FIXED:NO",
       "/ignore:4199",
       "/NXCOMPAT",
     ]
 
+    if (!is_asan) {
+      ldflags += [ "/ENTRY:MainEntryPoint" ]
+    }
+
     libs = [ "setupapi.lib" ]
 
     deps = [
       ":$archive_name",
       ":lib",
       ":version",
       "//build/config/sanitizers:deps",
       "//build/win:default_exe_manifest",
     ]
   }
@@ skipping 29 matching lines @@
     args = [
       "--out",
       "$target_name.exe",
     ]
     deps = [
       ":mini_installer",
       "//chrome/installer/test:alternate_version_generator",
     ]
   }
 }