Consistently use namespaced base::Version in component_updater code.

chrome/browser/component_updater/component_installers_unittest.cc

Index: chrome/browser/component_updater/component_installers_unittest.cc
diff --git a/chrome/browser/component_updater/component_installers_unittest.cc b/chrome/browser/component_updater/component_installers_unittest.cc
index aefce5ff205e52490a809b27eadc25002ce1d8e6..a15272b5dcd93d9dc1dca5c9486a6e8d979e0351 100644
--- a/chrome/browser/component_updater/component_installers_unittest.cc
+++ b/chrome/browser/component_updater/component_installers_unittest.cc
@@ -82,7 +82,7 @@ TEST(ComponentInstallerTest, PepperFlashCheck) {
   ASSERT_TRUE(root->IsType(base::Value::TYPE_DICTIONARY));
 
   // This checks that the whole manifest is compatible.
-  Version version;
+  base::Version version;
   EXPECT_TRUE(chrome::CheckPepperFlashManifest(*root, &version));
   EXPECT_TRUE(version.IsValid());
 }