Handle per-tab AUTOMATIC_DOWNLOADS setting in DownloadRequestLimiter.

chrome/browser/download/download_request_limiter.cc

Index: chrome/browser/download/download_request_limiter.cc
diff --git a/chrome/browser/download/download_request_limiter.cc b/chrome/browser/download/download_request_limiter.cc
index 85c47e992e93e1f80006e169b56a6133392eb54b..394cf7fcb80e4b1100c8eec91908e86005798221 100644
--- a/chrome/browser/download/download_request_limiter.cc
+++ b/chrome/browser/download/download_request_limiter.cc
@@ -191,6 +191,21 @@ void DownloadRequestLimiter::TabDownloadState::SetContentSetting(
   settings->SetContentSettingDefaultScope(
       web_contents_->GetURL(), GURL(),
       CONTENT_SETTINGS_TYPE_AUTOMATIC_DOWNLOADS, std::string(), setting);
+  TabSpecificContentSettings* tab_settings =
+      TabSpecificContentSettings::FromWebContents(web_contents_);
+  if (tab_settings) {

[alshabalin, 2016/12/08 11:39:06]

This is called right after permission prompt decision. Calls to
TabSpecificContentSettings::SetDownloadsBlocked will trigger notification to
DownloadRequestLimiter::TabDownloadState::Observe which will change status_.
However, it would be changed again anyway by call to NotifyCallbacks (from
Cancel() and Accept()).

+    switch (setting) {
+      case CONTENT_SETTING_BLOCK:
+        tab_settings->SetDownloadsBlocked(true);
+        break;
+      case CONTENT_SETTING_ALLOW:
+        tab_settings->SetDownloadsBlocked(false);
+        break;
+      default:
+        // Nothing to do.
+        break;
+    }
+  }
 }
 
 void DownloadRequestLimiter::TabDownloadState::Cancel() {