Add a mimeHandler extension API.

extensions/common/manifest_handlers/mime_types_handler.cc

Index: extensions/common/manifest_handlers/mime_types_handler.cc
diff --git a/chrome/common/extensions/manifest_handlers/mime_types_handler.cc b/extensions/common/manifest_handlers/mime_types_handler.cc
similarity index 94%
rename from chrome/common/extensions/manifest_handlers/mime_types_handler.cc
rename to extensions/common/manifest_handlers/mime_types_handler.cc
index dd25d89f8f5c2f16ace4b9d4a1c97c681d9c4302..7c4f034f430a8d894b7f2e1a540f6ed143658328 100644
--- a/chrome/common/extensions/manifest_handlers/mime_types_handler.cc
+++ b/extensions/common/manifest_handlers/mime_types_handler.cc
@@ -2,13 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/common/extensions/manifest_handlers/mime_types_handler.h"
+#include "extensions/common/manifest_handlers/mime_types_handler.h"
 
 #include "base/logging.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
-#include "chrome/common/extensions/extension_constants.h"
+#include "extensions/common/constants.h"
 #include "extensions/common/error_utils.h"
 #include "extensions/common/manifest.h"
 #include "extensions/common/manifest_constants.h"
@@ -23,7 +23,7 @@ const char* const kMIMETypeHandlersWhitelist[] = {
     extension_misc::kQuickOfficeComponentExtensionId,
     extension_misc::kQuickOfficeInternalExtensionId,
     extension_misc::kQuickOfficeExtensionId,
-    extension_misc::kStreamsPrivateTestExtensionId};
+    extension_misc::kMimeHandlerPrivateTestExtensionId};
 
 // Stored on the Extension.
 struct MimeTypesHandlerInfo : public extensions::Extension::ManifestData {