Move Extension Location and Type enums to Manifest, and move InstallWarning to its own file.

chrome/utility/chrome_content_utility_client.cc

Index: chrome/utility/chrome_content_utility_client.cc
diff --git a/chrome/utility/chrome_content_utility_client.cc b/chrome/utility/chrome_content_utility_client.cc
index 3d710c509c92f091a7b001e2e1c2f1241ce06295..836316493a9c95172f9f305e28e2094dc6f49f66 100644
--- a/chrome/utility/chrome_content_utility_client.cc
+++ b/chrome/utility/chrome_content_utility_client.cc
@@ -21,6 +21,7 @@
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_l10n_util.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
+#include "chrome/common/extensions/manifest.h"
 #include "chrome/common/extensions/manifest_handler.h"
 #include "chrome/common/extensions/unpacker.h"
 #include "chrome/common/extensions/update_manifest.h"
@@ -128,13 +129,13 @@ void ChromeContentUtilityClient::OnUnpackExtension(
     const std::string& extension_id,
     int location,
     int creation_flags) {
-  CHECK(location > extensions::Extension::INVALID);
-  CHECK(location < extensions::Extension::NUM_LOCATIONS);
+  CHECK(location > extensions::Manifest::INVALID_LOCATION);
+  CHECK(location < extensions::Manifest::NUM_LOCATIONS);
   RegisterExtensionManifestHandlers();
   extensions::Unpacker unpacker(
       extension_path,
       extension_id,
-      static_cast<extensions::Extension::Location>(location),
+      static_cast<extensions::Manifest::Location>(location),
       creation_flags);
   if (unpacker.Run() && unpacker.DumpImagesToFile() &&
       unpacker.DumpMessageCatalogsToFile()) {