Valgrind: Fix a leak in ContentSettingsProvider.

chrome/browser/content_settings/host_content_settings_map.cc

Index: chrome/browser/content_settings/host_content_settings_map.cc
diff --git a/chrome/browser/content_settings/host_content_settings_map.cc b/chrome/browser/content_settings/host_content_settings_map.cc
index db119abc12f8dc404449aad34188db3939c7db7a..fe8fe1eaba0a5db2981ac0f61dab78bc4530f07d 100644
--- a/chrome/browser/content_settings/host_content_settings_map.cc
+++ b/chrome/browser/content_settings/host_content_settings_map.cc
@@ -211,12 +211,11 @@ void HostContentSettingsMap::SetDefaultContentSetting(
   DCHECK(IsSettingAllowedForType(setting, content_type));
 
   base::Value* value = Value::CreateIntegerValue(setting);
-  content_settings_providers_[DEFAULT_PROVIDER]->SetWebsiteSetting(
-      ContentSettingsPattern::Wildcard(),
-      ContentSettingsPattern::Wildcard(),
-      content_type,
-      std::string(),
-      value);
+  if (!content_settings_providers_[DEFAULT_PROVIDER]->SetWebsiteSetting(
+      ContentSettingsPattern::Wildcard(), ContentSettingsPattern::Wildcard(),
+      content_type, std::string(), value)) {
+    delete value;
+  }
 }
 
 void HostContentSettingsMap::SetWebsiteSetting(