[DevTools] Rework DevToolsSession interaction with domain handlers.

content/browser/devtools/protocol/storage_handler.h

Index: content/browser/devtools/protocol/storage_handler.h
diff --git a/content/browser/devtools/protocol/storage_handler.h b/content/browser/devtools/protocol/storage_handler.h
index f203a1253344e2e91592c0be81f249dcf94e7cf4..1bede0149bc74ec551acd9471e8ca9476f7d1073 100644
--- a/content/browser/devtools/protocol/storage_handler.h
+++ b/content/browser/devtools/protocol/storage_handler.h
@@ -6,6 +6,7 @@
 #define CONTENT_BROWSER_DEVTOOLS_PROTOCOL_STORAGE_HANDLER_H_
 
 #include "base/macros.h"
+#include "content/browser/devtools/protocol/devtools_domain_handler.h"
 #include "content/browser/devtools/protocol/storage.h"
 
 namespace content {
@@ -14,13 +15,14 @@ class RenderFrameHostImpl;
 
 namespace protocol {
 
-class StorageHandler : public Storage::Backend {
+class StorageHandler : public DevToolsDomainHandler,
+                       public Storage::Backend {
  public:
   StorageHandler();
   ~StorageHandler() override;
 
-  void Wire(UberDispatcher*);
-  void SetRenderFrameHost(RenderFrameHostImpl* host);
+  void Wire(UberDispatcher* dispatcher) override;
+  void SetRenderFrameHost(RenderFrameHostImpl* host) override;
   Response Disable() override;
 
   Response ClearDataForOrigin(