[sessions] Remove most knowledge of //chrome from core tab restore code

chrome/browser/sessions/in_memory_tab_restore_service.h

Index: chrome/browser/sessions/in_memory_tab_restore_service.h
diff --git a/chrome/browser/sessions/in_memory_tab_restore_service.h b/chrome/browser/sessions/in_memory_tab_restore_service.h
index deef49c21022b0662d67fafcec7dff51892e56f2..4bcf1edf94479f511afe51bc30ba71f9e4885ac8 100644
--- a/chrome/browser/sessions/in_memory_tab_restore_service.h
+++ b/chrome/browser/sessions/in_memory_tab_restore_service.h
@@ -7,8 +7,14 @@
 
 #include <vector>
 
+#include "base/memory/scoped_ptr.h"
 #include "chrome/browser/sessions/tab_restore_service.h"
 #include "chrome/browser/sessions/tab_restore_service_helper.h"
+#include "components/sessions/core/tab_restore_service_client.h"
+
+namespace sessions {
+class TabRestoreServiceClient;
+}
 
 // Tab restore service that doesn't persist tabs on disk. This is used on
 // Android where tabs persistence is implemented on the application side in
@@ -19,8 +25,10 @@ class InMemoryTabRestoreService : public TabRestoreService {
   // Creates a new TabRestoreService and provides an object that provides the
   // current time. The TabRestoreService does not take ownership of
   // |time_factory|.
-  InMemoryTabRestoreService(Profile* profile,
-                            TimeFactory* time_factory);
+  InMemoryTabRestoreService(
+      Profile* profile,
+      scoped_ptr<sessions::TabRestoreServiceClient> client,
+      TimeFactory* time_factory);
 
   ~InMemoryTabRestoreService() override;
 
@@ -47,6 +55,7 @@ class InMemoryTabRestoreService : public TabRestoreService {
   void Shutdown() override;
 
  private:
+  scoped_ptr<sessions::TabRestoreServiceClient> client_;
   TabRestoreServiceHelper helper_;
 
   DISALLOW_COPY_AND_ASSIGN(InMemoryTabRestoreService);