diff --git a/src/vs/vscode.proposed.d.ts b/src/vs/vscode.proposed.d.ts
index 4f3e3e1f214ac2a99581bd75fdfe4d5a6504adf7..4aea3fcfb691382f6056029a8387308f02794a2d 100644
--- a/src/vs/vscode.proposed.d.ts
+++ b/src/vs/vscode.proposed.d.ts
@@ -1623,4 +1623,19 @@ declare module 'vscode' {
 	}
 
 	//#endregion
+
+
+	//#region
+
+	export interface ExtensionContext {
+		/**
+		 * Get the uri of a resource contained in the extension.
+		 *
+		 * @param relativePath A relative path to a resource contained in the extension.
+		 * @return The uri of the resource.
+		 */
+		asExtensionUri(relativePath: string): Uri;
+	}
+
+	//#endregion
 }
diff --git a/src/vs/workbench/api/common/extHostExtensionService.ts b/src/vs/workbench/api/common/extHostExtensionService.ts
index 978bf32fcda5b003a5c695cb8287005e47fb1c53..16f5e3bca7a7a97ec0dd9ca3900e0900eac39735 100644
--- a/src/vs/workbench/api/common/extHostExtensionService.ts
+++ b/src/vs/workbench/api/common/extHostExtensionService.ts
@@ -369,7 +369,8 @@ export abstract class AbstractExtHostExtensionService implements ExtHostExtensio
 				get extensionPath() { return extensionDescription.extensionLocation.fsPath; },
 				get storagePath() { return that._storagePath.workspaceValue(extensionDescription); },
 				get globalStoragePath() { return that._storagePath.globalValue(extensionDescription); },
-				asAbsolutePath: (relativePath: string) => { return path.join(extensionDescription.extensionLocation.fsPath, relativePath); },
+				asAbsolutePath(relativePath: string) { return path.join(extensionDescription.extensionLocation.fsPath, relativePath); },
+				asExtensionUri(relativePath: string) { return joinPath(extensionDescription.extensionLocation, relativePath); },
 				get logPath() { return path.join(that._initData.logsLocation.fsPath, extensionDescription.identifier.value); }
 			});
 		});