Revert "Update all users of base::Version to explicitly specify the namespace, and clean up the hea…

chrome/installer/setup/install.h

Index: chrome/installer/setup/install.h
diff --git a/chrome/installer/setup/install.h b/chrome/installer/setup/install.h
index 3c8093583e7bb476fd9cef2b468b4ca6c1cde6b6..a700b3c8be7200ee71af62dfe2f624d1ed2e6450 100644
--- a/chrome/installer/setup/install.h
+++ b/chrome/installer/setup/install.h
@@ -58,7 +58,7 @@ void EscapeXmlAttributeValueInSingleQuotes(base::string16* att_value);
 // |src_path|\VisualElements exists.
 // Returns true unless the manifest is supposed to be created, but fails to be.
 bool CreateVisualElementsManifest(const base::FilePath& src_path,
-                                  const base::Version& version);
+                                  const Version& version);
 
 // Overwrites shortcuts (desktop, quick launch, and start menu) if they are
 // present on the system.
@@ -114,7 +114,7 @@ InstallStatus InstallOrUpdateProduct(
     const base::FilePath& src_path,
     const base::FilePath& prefs_path,
     const installer::MasterPreferences& prefs,
-    const base::Version& new_version);
+    const Version& new_version);
 
 // Performs installation-related tasks following an OS upgrade.
 // |chrome| The installed product (must be a browser).