Take the Extension Storage API out of experimental.

chrome/renderer/extensions/custom_bindings_util.cc

Index: chrome/renderer/extensions/custom_bindings_util.cc
diff --git a/chrome/renderer/extensions/custom_bindings_util.cc b/chrome/renderer/extensions/custom_bindings_util.cc
index d4b801820ddf3381ec24c94a432a98ec639f7a1c..8196def02645052118f9e3dd4051244e2dce01a8 100644
--- a/chrome/renderer/extensions/custom_bindings_util.cc
+++ b/chrome/renderer/extensions/custom_bindings_util.cc
@@ -36,9 +36,9 @@ std::vector<v8::Extension*> GetAll(ExtensionDispatcher* extension_dispatcher) {
     "extensions/content_settings_custom_bindings.js",
     "extensions/devtools_custom_bindings.js",
     "extensions/experimental.input.ime_custom_bindings.js",
-    "extensions/experimental.storage_custom_bindings.js",
     "extensions/omnibox_custom_bindings.js",
     "extensions/page_action_custom_bindings.js",
+    "extensions/storage_custom_bindings.js",
     "extensions/tts_engine_custom_bindings.js",
     "extensions/types_custom_bindings.js",
     "extensions/windows_custom_bindings.js",
@@ -51,9 +51,9 @@ std::vector<v8::Extension*> GetAll(ExtensionDispatcher* extension_dispatcher) {
     IDR_CONTENT_SETTINGS_CUSTOM_BINDINGS_JS,
     IDR_DEVTOOLS_CUSTOM_BINDINGS_JS,
     IDR_EXPERIMENTAL_INPUT_IME_CUSTOM_BINDINGS_JS,
-    IDR_EXPERIMENTAL_STORAGE_CUSTOM_BINDINGS_JS,
     IDR_OMNIBOX_CUSTOM_BINDINGS_JS,
     IDR_PAGE_ACTION_CUSTOM_BINDINGS_JS,
+    IDR_STORAGE_CUSTOM_BINDINGS_JS,
     IDR_TTS_ENGINE_CUSTOM_BINDINGS_JS,
     IDR_TYPES_CUSTOM_BINDINGS_JS,
     IDR_WINDOWS_CUSTOM_BINDINGS_JS,