[DevTools] Rework DevToolsSession interaction with domain handlers.

content/browser/devtools/protocol/memory_handler.h

Index: content/browser/devtools/protocol/memory_handler.h
diff --git a/content/browser/devtools/protocol/memory_handler.h b/content/browser/devtools/protocol/memory_handler.h
index 193ee8e97838cdbed8a06e4617d9a91886e44090..b826c8cb0d6648fc538089408fb733e5fce6c6bf 100644
--- a/content/browser/devtools/protocol/memory_handler.h
+++ b/content/browser/devtools/protocol/memory_handler.h
@@ -6,17 +6,20 @@
 #define CONTENT_BROWSER_DEVTOOLS_PROTOCOL_MEMORY_HANDLER_H_
 
 #include "base/macros.h"
+#include "content/browser/devtools/protocol/devtools_domain_handler.h"
 #include "content/browser/devtools/protocol/memory.h"
 
 namespace content {
 namespace protocol {
 
-class MemoryHandler : public Memory::Backend {
+class MemoryHandler : public DevToolsDomainHandler,
+                      public Memory::Backend {
  public:
   MemoryHandler();
   ~MemoryHandler() override;
 
-  void Wire(UberDispatcher*);
+  void Wire(UberDispatcher* dispatcher) override;
+  void SetRenderFrameHost(RenderFrameHostImpl* host) override;
   Response Disable() override;
 
   Response SetPressureNotificationsSuppressed(bool suppressed) override;