Switch AccessibilityMode to be a bitmap

content/browser/android/content_view_core_impl.cc

Index: content/browser/android/content_view_core_impl.cc
diff --git a/content/browser/android/content_view_core_impl.cc b/content/browser/android/content_view_core_impl.cc
index 14a50be1120fb3303292312df419096a44305ded..33ffd2aae41baab5f4ec852cf7efded5f3584297 100644
--- a/content/browser/android/content_view_core_impl.cc
+++ b/content/browser/android/content_view_core_impl.cc
@@ -1779,11 +1779,11 @@ void ContentViewCoreImpl::SetAccessibilityEnabled(JNIEnv* env, jobject obj,
     accessibility_state->OnScreenReaderDetected();
     // If it was actually enabled globally, enable it for this RenderWidget now.
     if (accessibility_state->IsAccessibleBrowser() && host_impl)
-      host_impl->SetAccessibilityMode(AccessibilityModeComplete);
+      host_impl->AddAccessibilityMode(AccessibilityModeComplete);
   } else {
-    accessibility_state->DisableAccessibility();
+    accessibility_state->ResetAccessibilityMode();
     if (host_impl)
-      host_impl->SetAccessibilityMode(AccessibilityModeOff);
+      host_impl->ResetAccessibilityMode();
   }
 }