Revert of Implement GetDisplayed on android M+

chrome/browser/notifications/notification_platform_bridge_android.cc

Index: chrome/browser/notifications/notification_platform_bridge_android.cc
diff --git a/chrome/browser/notifications/notification_platform_bridge_android.cc b/chrome/browser/notifications/notification_platform_bridge_android.cc
index 3f64247f468c31551ca6ff2e75e03b76d7b7c63f..0c8c82fe6f819c043ad8bc8419020a02332cd819 100644
--- a/chrome/browser/notifications/notification_platform_bridge_android.cc
+++ b/chrome/browser/notifications/notification_platform_bridge_android.cc
@@ -7,7 +7,6 @@
 #include <utility>
 #include <vector>
 
-#include "base/android/build_info.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/command_line.h"
@@ -316,30 +315,8 @@
     const std::string& profile_id,
     bool incognito,
     std::set<std::string>* notifications) const {
-  DCHECK(notifications);
-  JNIEnv* env = AttachCurrentThread();
-
-  // Android only supports retrieving existing notifications from M+
-  if (base::android::BuildInfo::GetInstance()->sdk_int() <
-      base::android::SDK_VERSION_MARSHMALLOW) {
-    return false;
-  }
-
-  const ScopedJavaLocalRef<jstring> j_profile_id =
-      ConvertUTF8ToJavaString(env, profile_id);
-
-  ScopedJavaLocalRef<jobjectArray> j_notification_ids =
-      Java_NotificationPlatformBridge_getNotificationsForProfile(
-          env, java_object_, j_profile_id);
-  if (j_notification_ids.obj()) {
-    std::vector<std::string> notification_ids;
-    base::android::AppendJavaStringArrayToStringVector(
-        env, j_notification_ids.obj(), &notification_ids);
-    for (const auto& id : notification_ids) {
-      notifications->insert(id);
-    }
-  }
-  return true;
+  // TODO(miguelg): This can actually be implemented for M+
+  return false;
 }
 
 // static