Convert indirect uses of TestingFactoryFunction

TestingFactoryFunction is a simple function pointer. It is
deprecated in favor of TestingFactory which is a Callback<>.
Convert indirect uses by using base::BindRepeating() in all
invocation of SetTestingFactory/AddTestingFactory.

This converts uses in src//extensions/browser/api.

This CL was uploaded by git cl split.

R=tbarzic@chromium.org

Bug: 809610
Change-Id: Id9e8d81f60c29865b75ea219472a029c0ba7e487
Reviewed-on: https://chromium-review.googlesource.com/c/1257793Reviewed-by: Toni Baržić <tbarzic@chromium.org>
Commit-Queue: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#597046}

extensions/browser/api/system_power_source/system_power_source_api_unittest.cc

@@ -4,6 +4,7 @@
 
 #include <limits>
 
+#include "base/bind.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/fake_power_manager_client.h"
 #include "extensions/browser/api/system_power_source/system_power_source_api.h"
@@ -341,7 +342,8 @@ TEST_F(SystemPowerSourceApiUnitTest, GetPowerSourceRounding) {
 TEST_F(SystemPowerSourceApiUnitTest, OnPowerChangedEvent) {
   TestEventRouter* event_router = static_cast<TestEventRouter*>(
       EventRouterFactory::GetInstance()->SetTestingFactoryAndUse(
-          browser_context(), &TestEventRouterFactoryFunction));
+          browser_context(),
+          base::BindRepeating(&TestEventRouterFactoryFunction)));
   SystemPowerSourceAPI system_power_source_api(browser_context());
 
   power_manager_client_->UpdatePowerProperties(MakePowerSupplyProperties(
@@ -365,7 +367,8 @@ TEST_F(SystemPowerSourceApiUnitTest, OnPowerChangedEvent) {
 TEST_F(SystemPowerSourceApiUnitTest, RequestStatusUpdate) {
   TestEventRouter* event_router = static_cast<TestEventRouter*>(
       EventRouterFactory::GetInstance()->SetTestingFactoryAndUse(
-          browser_context(), &TestEventRouterFactoryFunction));
+          browser_context(),
+          base::BindRepeating(&TestEventRouterFactoryFunction)));
   SystemPowerSourceAPI system_power_source_api(browser_context());
 
   power_manager_client_->UpdatePowerProperties(MakePowerSupplyProperties(