Remove more MemoryCoordinator leftovers

Bug: N/A
Change-Id: I9b9b79631024c338c139600fb3b35d9fce6ed43c
Reviewed-on: https://chromium-review.googlesource.com/c/1491745
Commit-Queue: Kenichi Ishibashi <bashi@chromium.org>
Commit-Queue: Kentaro Hara <haraken@chromium.org>
Auto-Submit: Kenichi Ishibashi <bashi@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#636323}

chrome/browser/resource_coordinator/tab_manager_web_contents_data.h

@@ -50,13 +50,9 @@ class TabManager::WebContentsData
                         content::WebContents* new_contents);
 
   // Sets the current purge state.
-  // TODO(tasak): remove this after the logic is moved into
-  // MemoryCoordinator.
   void set_is_purged(bool state) { is_purged_ = state; }
 
   // Returns the current state of purge.
-  // TODO(tasak): remove this after the logic is moved into
-  // MemoryCoordinator.
   bool is_purged() const { return is_purged_; }
 
   // Sets the time to purge after the tab is backgrounded.

testing/buildbot/filters/chromeos.mash.fyi.browser_tests.filter

@@ -221,7 +221,6 @@
 -PrerenderBrowserTest.*
 -SitePerProcess/TaskManagerOOPIFBrowserTest.*
 -TaskManagerBrowserTest.*
--TaskManagerMemoryCoordinatorBrowserTest.*
 -TaskManagerUtilityProcessBrowserTest.*
 
 # ash::Shell access in test.