Add MemoryCoordinatorDelegate

chrome/browser/memory/tab_manager.h

Index: chrome/browser/memory/tab_manager.h
diff --git a/chrome/browser/memory/tab_manager.h b/chrome/browser/memory/tab_manager.h
index e681782791bfda6063401bb0f54e6c55ecca55f1..995bc3e8f9182b7e920fee5e7bd4f14aed6c65c1 100644
--- a/chrome/browser/memory/tab_manager.h
+++ b/chrome/browser/memory/tab_manager.h
@@ -28,6 +28,7 @@
 #include "chrome/browser/memory/tab_stats.h"
 #include "chrome/browser/ui/browser_tab_strip_tracker.h"
 #include "chrome/browser/ui/tabs/tab_strip_model_observer.h"
+#include "content/public/browser/memory_coordinator_delegate.h"
 
 class BrowserList;
 class GURL;
@@ -65,7 +66,8 @@ class TabManagerDelegate;
 // Note that the browser tests are only active for platforms that use
 // TabManager (CrOS only for now) and need to be adjusted accordingly if
 // support for new platforms is added.
-class TabManager : public TabStripModelObserver {
+class TabManager : public TabStripModelObserver,
+                   public content::MemoryCoordinatorDelegate {
  public:
   // Needs to be public for DEFINE_WEB_CONTENTS_USER_DATA_KEY.
   class WebContentsData;
@@ -147,6 +149,9 @@ class TabManager : public TabStripModelObserver {
   // Sets/clears the auto-discardable state of the tab.
   void SetTabAutoDiscardableState(content::WebContents* contents, bool state);
 
+  // MemoryCoordinatorDelegate implementation.
+  bool CanSuspendBackgroundedRenderer(int render_process_id) override;
+
   // Returns true if |first| is considered less desirable to be killed than
   // |second|.
   static bool CompareTabStats(const TabStats& first, const TabStats& second);