Revert of Add MemoryCoordinator

content/browser/browser_main_loop.h

Index: content/browser/browser_main_loop.h
diff --git a/content/browser/browser_main_loop.h b/content/browser/browser_main_loop.h
index d05d176e7c3f2a0505ec7f60aec07453c3b8b78e..62ba7ac9e030c8d1a27665a72a270d5da7186438 100644
--- a/content/browser/browser_main_loop.h
+++ b/content/browser/browser_main_loop.h
@@ -50,10 +50,6 @@
 }  // namespace midi
 }  // namespace media
 
-namespace memory_coordinator {
-class MemoryCoordinator;
-}  // namespace memory_coordinator
-
 namespace mojo {
 namespace edk {
 class ScopedIPCSupport;
@@ -146,10 +142,6 @@
   }
 
   void StopStartupTracingTimer();
-
-  memory_coordinator::MemoryCoordinator* memory_coordinator() const {
-    return memory_coordinator_.get();
-  }
 
 #if defined(OS_MACOSX) && !defined(OS_IOS)
   media::DeviceMonitorMac* device_monitor_mac() const {
@@ -257,7 +249,6 @@
   // Members initialized in |PreCreateThreads()| -------------------------------
   // Torn down in ShutdownThreadsAndCleanUp.
   std::unique_ptr<base::MemoryPressureMonitor> memory_pressure_monitor_;
-  std::unique_ptr<memory_coordinator::MemoryCoordinator> memory_coordinator_;
 
   // Members initialized in |CreateThreads()| ----------------------------------
   std::unique_ptr<BrowserProcessSubThread> db_thread_;