Site Settings Desktop: Fix crash when altering exception.

chrome/browser/ui/webui/site_settings_helper.h

Index: chrome/browser/ui/webui/site_settings_helper.h
diff --git a/chrome/browser/ui/webui/site_settings_helper.h b/chrome/browser/ui/webui/site_settings_helper.h
index 4f3f29ddf525d0e42846416ecec700686f2306de..19847b1806fcf36b1a2d628041b42b71f0eb3a61 100644
--- a/chrome/browser/ui/webui/site_settings_helper.h
+++ b/chrome/browser/ui/webui/site_settings_helper.h
@@ -15,6 +15,7 @@
 #include "components/content_settings/core/common/content_settings_pattern.h"
 #include "components/content_settings/core/common/content_settings_types.h"
 #include "content/public/browser/web_ui.h"
+#include "extensions/common/extension.h"
 
 class ChooserContextBase;
 class HostContentSettingsMap;
@@ -40,6 +41,7 @@ extern const char kSetting[];
 extern const char kOrigin[];
 extern const char kPolicyProviderId[];
 extern const char kSource[];
+extern const char kIncognito[];
 extern const char kEmbeddingOrigin[];
 extern const char kPreferencesSource[];
 
@@ -55,6 +57,18 @@ ContentSettingsType ContentSettingsTypeFromGroupName(const std::string& name);
 // Gets a string identifier for the group name.
 std::string ContentSettingsTypeToGroupName(ContentSettingsType type);
 
+// Helper function to construct a dictonary for an exception.
+std::unique_ptr<base::DictionaryValue> GetExceptionForPage(
+    const ContentSettingsPattern& pattern,
+    const ContentSettingsPattern& secondary_pattern,
+    const ContentSetting& setting,
+    const std::string& provider_name,
+    bool incognito);
+
+// Helper function to construct a dictonary for a hosted app exception.
+void AddExceptionForHostedApp(const std::string& url_pattern,
+    const extensions::Extension& app, base::ListValue* exceptions);
+
 // Fills in |exceptions| with Values for the given |type| from |map|.
 // If |filter| is not null then only exceptions with matching primary patterns
 // will be returned.