Remove profile-keyed factory boilerplates.

chrome/browser/extensions/api/font_settings/font_settings_api.cc

Index: chrome/browser/extensions/api/font_settings/font_settings_api.cc
diff --git a/chrome/browser/extensions/api/font_settings/font_settings_api.cc b/chrome/browser/extensions/api/font_settings/font_settings_api.cc
index 7aeec6f60f3cb0afb7bf1931afe64382b64d2dec..15f11bee288ed64c4dea2bc233d346e75ddc8d85 100644
--- a/chrome/browser/extensions/api/font_settings/font_settings_api.cc
+++ b/chrome/browser/extensions/api/font_settings/font_settings_api.cc
@@ -9,6 +9,7 @@
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/json/json_writer.h"
+#include "base/lazy_instance.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
 #include "base/values.h"
@@ -217,6 +218,14 @@ FontSettingsAPI::FontSettingsAPI(Profile* profile)
 FontSettingsAPI::~FontSettingsAPI() {
 }
 
+static base::LazyInstance<ProfileKeyedAPIFactory<FontSettingsAPI> >
+g_factory = LAZY_INSTANCE_INITIALIZER;
+
+// static
+ProfileKeyedAPIFactory<FontSettingsAPI>* FontSettingsAPI::GetFactoryInstance() {
+  return &g_factory.Get();
+}
+
 bool FontSettingsClearFontFunction::RunImpl() {
   if (profile_->IsOffTheRecord()) {
     error_ = kSetFromIncognitoError;