Default Provider style fixes.

Addressing comments from CL 1004733003.

Review URL: https://codereview.chromium.org/1038203003

Cr-Commit-Position: refs/heads/master@{#324403}

components/content_settings/core/browser/content_settings_utils.cc

@@ -169,6 +169,14 @@ bool ParseContentSettingValue(const base::Value* value,
   return *setting != CONTENT_SETTING_DEFAULT;
 }
 
+scoped_ptr<base::Value> ContentSettingToValue(ContentSetting setting) {
+  if (setting <= CONTENT_SETTING_DEFAULT ||
+      setting >= CONTENT_SETTING_NUM_SETTINGS) {
+    return nullptr;
+  }
+  return make_scoped_ptr(new base::FundamentalValue(setting));
+}
+
 base::Value* GetContentSettingValueAndPatterns(
     const ProviderInterface* provider,
     const GURL& primary_url,

components/content_settings/core/browser/content_settings_utils.h

@@ -9,6 +9,7 @@
 #include <utility>
 
 #include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
 #include "components/content_settings/core/common/content_settings.h"
 #include "components/content_settings/core/common/content_settings_pattern.h"
 #include "components/content_settings/core/common/content_settings_types.h"
@@ -59,6 +60,10 @@ base::Value* GetContentSettingValueAndPatterns(
     ContentSettingsPattern* primary_pattern,
     ContentSettingsPattern* secondary_pattern);
 
+// Returns a |base::Value*| representation of |setting| if |setting| is
+// a valid content setting. Otherwise, returns a nullptr.
+scoped_ptr<base::Value> ContentSettingToValue(ContentSetting setting);
+
 base::Value* GetContentSettingValueAndPatterns(
     const ProviderInterface* provider,
     const GURL& primary_url,