Allow extension extensions to be case-insensitive.

chrome/common/extensions/extension.cc

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/common/extensions/extension.h"
 
 #include "app/resource_bundle.h"
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "base/third_party/nss/blapi.h"
 #include "base/third_party/nss/sha256.h"
+#include "chrome/common/chrome_constants.h"
 #include "chrome/common/extensions/extension_error_reporter.h"
 #include "chrome/common/extensions/extension_error_utils.h"
 #include "chrome/common/extensions/user_script.h"
 #include "chrome/common/url_constants.h"
 #include "net/base/base64.h"
 #include "net/base/net_util.h"
 
 #if defined(OS_WIN)
 #include "base/registry.h"
 #endif
@@ skipping 167 matching lines @@
   for (PageActionMap::iterator i = page_actions_.begin();
        i != page_actions_.end(); ++i)
     delete i->second;
 }
 
 const std::string Extension::VersionString() const {
   return version_->GetString();
 }
 
 // static
+bool Extension::IsExtension(const FilePath& file_name) {
+  return file_name.MatchesExtension(
+      FilePath::StringType(FILE_PATH_LITERAL(".")) +
+      chrome::kExtensionFileExtension);
+}
+
+// static
 bool Extension::IdIsValid(const std::string& id) {
   // Verify that the id is legal.
   if (id.size() != (kIdSize * 2))
     return false;
 
   // We only support lowercase IDs, because IDs can be used as URL components
   // (where GURL will lowercase it).
   std::string temp = StringToLowerASCII(id);
   for (size_t i = 0; i < temp.size(); i++)
     if (temp[i] < 'a' || temp[i] > 'p')
@@ skipping 717 matching lines @@
     }
   }
 
   for (PageActionMap::const_iterator it = page_actions().begin();
        it != page_actions().end(); ++it) {
     image_paths.insert(it->second->icon_path());
   }
 
   return image_paths;
 }