Add schema chrome-extension-resource:// for extension resources

chrome/browser/extensions/extension_protocols.cc

Index: chrome/browser/extensions/extension_protocols.cc
diff --git a/chrome/browser/extensions/extension_protocols.cc b/chrome/browser/extensions/extension_protocols.cc
index 4b551533b00188845870845d9d44b1bd55a41d48..92aa528ef5aa540d3f39d2853164a9cc939d9c3f 100644
--- a/chrome/browser/extensions/extension_protocols.cc
+++ b/chrome/browser/extensions/extension_protocols.cc
@@ -8,6 +8,7 @@
 
 #include "base/compiler_specific.h"
 #include "base/file_path.h"
+#include "base/file_util.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
@@ -240,7 +241,7 @@ class ExtensionProtocolHandler
   DISALLOW_COPY_AND_ASSIGN(ExtensionProtocolHandler);
 };
 
-// Creates URLRequestJobs for extension:// URLs.
+// Creates URLRequestJobs for chrome-extension:// URLs.
 net::URLRequestJob*
 ExtensionProtocolHandler::MaybeCreateJob(net::URLRequest* request) const {
   // TODO(mpcomplete): better error code.
@@ -317,11 +318,35 @@ ExtensionProtocolHandler::MaybeCreateJob(net::URLRequest* request) const {
     base::ThreadRestrictions::ScopedAllowIO allow_io;
     resource_file_path = resource.GetFilePath();
   }
-
   return new URLRequestExtensionJob(request, resource_file_path,
                                     content_security_policy, send_cors_header);
 }
 
+class ExtensionResourceProtocolHandler
+    : public net::URLRequestJobFactory::ProtocolHandler {
+ public:
+  ExtensionResourceProtocolHandler() {}
+  virtual ~ExtensionResourceProtocolHandler() {}
+
+  virtual net::URLRequestJob* MaybeCreateJob(
+      net::URLRequest* request) const OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ExtensionResourceProtocolHandler);
+};
+
+// Creates URLRequestJobs for chrome-extension-resource:// URLs.
+net::URLRequestJob*
+ExtensionResourceProtocolHandler::MaybeCreateJob(
+    net::URLRequest* request) const {
+  FilePath root_path;
+  PathService::Get(chrome::DIR_RESOURCES_EXTENSION, &root_path);
+  FilePath path =
+    extension_file_util::ExtensionResourceURLToFilePath(
+        request->url(), root_path);
+  return new net::URLRequestFileJob(request, path);
+}
+
 }  // namespace
 
 net::URLRequestJobFactory::ProtocolHandler* CreateExtensionProtocolHandler(
@@ -329,3 +354,8 @@ net::URLRequestJobFactory::ProtocolHandler* CreateExtensionProtocolHandler(
     ExtensionInfoMap* extension_info_map) {
   return new ExtensionProtocolHandler(is_incognito, extension_info_map);
 }
+
+net::URLRequestJobFactory::ProtocolHandler*
+CreateExtensionResourceProtocolHandler() {
+  return new ExtensionResourceProtocolHandler();
+}