Add delegate and factory function for ChildMemoryCoordinator

content/renderer/render_thread_impl.h

Index: content/renderer/render_thread_impl.h
diff --git a/content/renderer/render_thread_impl.h b/content/renderer/render_thread_impl.h
index 979c22e17c8b0cf42dc67e26fd14c7c3a364a594..2457b648018b8cbe9c0e67af364009ecc169c95b 100644
--- a/content/renderer/render_thread_impl.h
+++ b/content/renderer/render_thread_impl.h
@@ -22,6 +22,7 @@
 #include "base/threading/thread_checker.h"
 #include "base/timer/timer.h"
 #include "build/build_config.h"
+#include "components/memory_coordinator/child/child_memory_coordinator_impl.h"
 #include "content/child/child_thread_impl.h"
 #include "content/common/content_export.h"
 #include "content/common/frame.mojom.h"
@@ -81,10 +82,6 @@ namespace media {
 class GpuVideoAcceleratorFactories;
 }
 
-namespace memory_coordinator {
-class ChildMemoryCoordinatorImpl;
-}
-
 namespace ui {
 class GpuService;
 }
@@ -153,6 +150,7 @@ class CONTENT_EXPORT RenderThreadImpl
       public ChildThreadImpl,
       public gpu::GpuChannelHostFactory,
       public blink::scheduler::RendererScheduler::RAILModeObserver,
+      public memory_coordinator::ChildMemoryCoordinatorDelegate,
       NON_EXPORTED_BASE(public CompositorDependencies) {
  public:
   static RenderThreadImpl* Create(const InProcessChildThreadParams& params);
@@ -454,6 +452,9 @@ class CONTENT_EXPORT RenderThreadImpl
 
   mojom::StoragePartitionService* GetStoragePartitionService();
 
+  // memory_coordinator::ChildMemoryCoordinatorDelegate implementation.
+  void OnTrimMemoryImmediately() override;
+
  protected:
   RenderThreadImpl(
       const InProcessChildThreadParams& params,