Revert of base: Remove using:: declaration from version.h header.

chrome/installer/setup/setup_util_unittest.cc

Index: chrome/installer/setup/setup_util_unittest.cc
diff --git a/chrome/installer/setup/setup_util_unittest.cc b/chrome/installer/setup/setup_util_unittest.cc
index c91cd682db47928cbdf2ce96984e80d4a07fd01e..91ab75452bd147b5ebcebf1ce45ea0e17d604e1a 100644
--- a/chrome/installer/setup/setup_util_unittest.cc
+++ b/chrome/installer/setup/setup_util_unittest.cc
@@ -95,7 +95,7 @@
   base::FilePath chrome_dir = test_dir.path().AppendASCII("1.0.0.0");
   base::CreateDirectory(chrome_dir);
   ASSERT_TRUE(base::PathExists(chrome_dir));
-  scoped_ptr<base::Version> version(
+  scoped_ptr<Version> version(
       installer::GetMaxVersionFromArchiveDir(test_dir.path()));
   ASSERT_EQ(version->GetString(), "1.0.0.0");
 
@@ -269,9 +269,9 @@
       return static_cast<FakeProductState*>(const_cast<ProductState*>(product));
     }
 
-    void set_version(const base::Version& version) {
+    void set_version(const Version& version) {
       if (version.IsValid())
-        version_.reset(new base::Version(version));
+        version_.reset(new Version(version));
       else
         version_.reset();
     }
@@ -287,8 +287,8 @@
     ASSERT_TRUE(test_dir_.CreateUniqueTempDir());
     registry_override_manager_.OverrideRegistry(HKEY_CURRENT_USER);
     registry_override_manager_.OverrideRegistry(HKEY_LOCAL_MACHINE);
-    product_version_ = base::Version("30.0.1559.0");
-    max_version_ = base::Version("47.0.1559.0");
+    product_version_ = Version("30.0.1559.0");
+    max_version_ = Version("47.0.1559.0");
 
     // Install the product according to the version.
     original_state_.reset(new FakeInstallationState());
@@ -315,7 +315,7 @@
     original_state_.reset();
   }
 
-  base::FilePath GetArchivePath(const base::Version& version) const {
+  base::FilePath GetArchivePath(const Version& version) const {
     return test_dir_.path()
         .AppendASCII(version.GetString())
         .Append(installer::kInstallerDir)
@@ -349,14 +349,14 @@
     FakeProductState::FromProductState(
         original_state_->GetNonVersionedProductState(kSystemInstall_,
                                                      kProductType_))
-        ->set_version(base::Version());
+        ->set_version(Version());
   }
 
   static const bool kSystemInstall_;
   static const BrowserDistribution::Type kProductType_;
   base::ScopedTempDir test_dir_;
-  base::Version product_version_;
-  base::Version max_version_;
+  Version product_version_;
+  Version max_version_;
   scoped_ptr<FakeInstallationState> original_state_;
   scoped_ptr<installer::InstallerState> installer_state_;