[DevTools] Rework DevToolsSession interaction with domain handlers.

content/browser/devtools/protocol/storage_handler.cc

Index: content/browser/devtools/protocol/storage_handler.cc
diff --git a/content/browser/devtools/protocol/storage_handler.cc b/content/browser/devtools/protocol/storage_handler.cc
index 9c3a06ce63d5d5110b8622da8ba206864be10dd6..6dc27ea7dcabcf8fd1638c283ef5bf8d9476eff1 100644
--- a/content/browser/devtools/protocol/storage_handler.cc
+++ b/content/browser/devtools/protocol/storage_handler.cc
@@ -30,7 +30,8 @@ static const char kAll[] = "all";
 }
 
 StorageHandler::StorageHandler()
-    : host_(nullptr) {
+    : DevToolsDomainHandler(Storage::Metainfo::domainName),
+      host_(nullptr) {
 }
 
 StorageHandler::~StorageHandler() = default;
@@ -39,14 +40,6 @@ void StorageHandler::Wire(UberDispatcher* dispatcher) {
   Storage::Dispatcher::wire(dispatcher, this);
 }
 
-void StorageHandler::SetRenderFrameHost(RenderFrameHostImpl* host) {
-  host_ = host;
-}
-
-Response StorageHandler::Disable() {
-  return Response::OK();
-}
-
 Response StorageHandler::ClearDataForOrigin(
     const std::string& origin,
     const std::string& storage_types) {