aw: Remove global AllowWait on UI thread

android_webview/lib/main/aw_main_delegate.cc

Index: android_webview/lib/main/aw_main_delegate.cc
diff --git a/android_webview/lib/main/aw_main_delegate.cc b/android_webview/lib/main/aw_main_delegate.cc
index 26d16d3dc96c5baef82f404de438d3f369739b54..7f465993d48c79aaf8062abc2709d86a3127bcbb 100644
--- a/android_webview/lib/main/aw_main_delegate.cc
+++ b/android_webview/lib/main/aw_main_delegate.cc
@@ -11,7 +11,6 @@
 #include "android_webview/browser/browser_view_renderer.h"
 #include "android_webview/browser/command_line_helper.h"
 #include "android_webview/browser/deferred_gpu_command_service.h"
-#include "android_webview/browser/scoped_allow_wait_for_legacy_web_view_api.h"
 #include "android_webview/common/aw_descriptors.h"
 #include "android_webview/common/aw_paths.h"
 #include "android_webview/common/aw_switches.h"
@@ -55,14 +54,6 @@
 
 namespace android_webview {
 
-namespace {
-
-// TODO(boliu): Remove this global Allow once the underlying issues are
-// resolved - http://crbug.com/240453. See AwMainDelegate::RunProcess below.
-base::LazyInstance<std::unique_ptr<ScopedAllowWaitForLegacyWebViewApi>>::
-    DestructorAtExit g_allow_wait_in_ui_thread = LAZY_INSTANCE_INITIALIZER;
-}
-
 AwMainDelegate::AwMainDelegate() {
 }
 
@@ -240,9 +231,6 @@ int AwMainDelegate::RunProcess(
     crash_reporter::AddGpuFingerprintToMicrodumpCrashHandler(
         content_client_.gpu_fingerprint());
 
-    g_allow_wait_in_ui_thread.Get().reset(
-        new ScopedAllowWaitForLegacyWebViewApi);
-
     // Return 0 so that we do NOT trigger the default behavior. On Android, the
     // UI message loop is managed by the Java application.
     return 0;