Convert //chrome/installer from scoped_ptr to std::unique_ptr

chrome/installer/util/installer_state_unittest.cc

Index: chrome/installer/util/installer_state_unittest.cc
diff --git a/chrome/installer/util/installer_state_unittest.cc b/chrome/installer/util/installer_state_unittest.cc
index 1ced49e2e66760e5289c60de2d1e216d7a7880a1..5576fbc0a7d0164f466a4111c3cd8a096a459797 100644
--- a/chrome/installer/util/installer_state_unittest.cc
+++ b/chrome/installer/util/installer_state_unittest.cc
@@ -476,7 +476,8 @@ TEST_F(InstallerStateTest, GetCurrentVersionMigrateChrome) {
   installer_state.Initialize(cmd_line, prefs, machine_state);
 
   // Is the Chrome version picked up?
-  scoped_ptr<Version> version(installer_state.GetCurrentVersion(machine_state));
+  std::unique_ptr<Version> version(
+      installer_state.GetCurrentVersion(machine_state));
   EXPECT_TRUE(version.get() != NULL);
 }
 
@@ -729,7 +730,7 @@ class InstallerStateCriticalVersionTest : public ::testing::Test {
   static Version* high_version_;
 
   base::CommandLine cmd_line_;
-  scoped_ptr<MasterPreferences> prefs_;
+  std::unique_ptr<MasterPreferences> prefs_;
   InstallationState machine_state_;
   MockInstallerState installer_state_;
 };