Fix TODOs related to SDK 24

android_webview/apk/java/proguard.flags

Index: android_webview/apk/java/proguard.flags
diff --git a/android_webview/apk/java/proguard.flags b/android_webview/apk/java/proguard.flags
index 495d48612b206412744f05995b6b73d480fe0c82..c4cf0a424c36fe1ffc28419eca6d0faa877490d1 100644
--- a/android_webview/apk/java/proguard.flags
+++ b/android_webview/apk/java/proguard.flags
@@ -70,11 +70,5 @@
 }
 -dontnote com.android.webview.chromium.AwSafeBrowsingApiHandler
 
-#TODO(hush): remove after N release. crbug.com/546762
--keep class com.android.webview.chromium.ContentSettingsAdapter {
-  public void setDisabledActionModeMenuItems(int);
-  public int getDisabledActionModeMenuItems();
-}
-
 # We strip some unused resources when preprocessing the GMS client libs.
 -dontwarn com.google.android.gms.R**