[HBD] Only use Flash Download interception for DETECT content setting.

chrome/browser/plugins/flash_download_interception.cc

Index: chrome/browser/plugins/flash_download_interception.cc
diff --git a/chrome/browser/plugins/flash_download_interception.cc b/chrome/browser/plugins/flash_download_interception.cc
index 887ab7985fd233c2fad1998a6ec632d0cae6d21e..13e0e164f72c8cd5ce18c9bec1bd06ee46edcb4f 100644
--- a/chrome/browser/plugins/flash_download_interception.cc
+++ b/chrome/browser/plugins/flash_download_interception.cc
@@ -7,7 +7,11 @@
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/string_util.h"
+#include "chrome/browser/content_settings/host_content_settings_map_factory.h"
+#include "chrome/browser/plugins/plugins_field_trial.h"
+#include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_features.h"
+#include "components/content_settings/core/browser/host_content_settings_map.h"
 #include "components/navigation_interception/intercept_navigation_throttle.h"
 #include "components/navigation_interception/navigation_params.h"
 #include "content/public/browser/browser_thread.h"
@@ -48,6 +52,24 @@ FlashDownloadInterception::MaybeCreateThrottleFor(NavigationHandle* handle) {
     return nullptr;
   }
 
+  Profile* profile = Profile::FromBrowserContext(
+      handle->GetWebContents()->GetBrowserContext());
+  HostContentSettingsMap* host_content_settings_map =
+      HostContentSettingsMapFactory::GetForProfile(profile);
+  GURL page_url = handle->GetWebContents()->GetLastCommittedURL();
+
+  std::unique_ptr<base::Value> general_setting =
+      host_content_settings_map->GetWebsiteSetting(
+          page_url, page_url, CONTENT_SETTINGS_TYPE_PLUGINS, std::string(),
+          nullptr);
+  ContentSetting plugin_setting =
+      content_settings::ValueToContentSetting(general_setting.get());
+  plugin_setting = PluginsFieldTrial::EffectiveContentSetting(
+      CONTENT_SETTINGS_TYPE_PLUGINS, plugin_setting);
+
+  if (plugin_setting != CONTENT_SETTING_DETECT_IMPORTANT_CONTENT)
+    return nullptr;
+
   return base::MakeUnique<navigation_interception::InterceptNavigationThrottle>(
       handle, base::Bind(&ShouldInterceptNavigation), true);
 }