Fix CompositorResizeLock to do something.

content/browser/renderer_host/delegated_frame_host_client_aura.h

Index: content/browser/renderer_host/delegated_frame_host_client_aura.h
diff --git a/content/browser/renderer_host/delegated_frame_host_client_aura.h b/content/browser/renderer_host/delegated_frame_host_client_aura.h
index 7ef327e8b9556fc2e0a1e29a75567a40dd4056ac..4d47003873d7be3bd43bae43adcbd172ed999d4b 100644
--- a/content/browser/renderer_host/delegated_frame_host_client_aura.h
+++ b/content/browser/renderer_host/delegated_frame_host_client_aura.h
@@ -6,6 +6,7 @@
 #define CONTENT_BROWSER_RENDERER_HOST_DELEGATED_FRAME_HOST_CLIENT_AURA_H_
 
 #include "base/macros.h"
+#include "content/browser/renderer_host/compositor_resize_lock.h"
 #include "content/browser/renderer_host/delegated_frame_host.h"
 #include "content/common/content_export.h"
 
@@ -15,7 +16,8 @@ class RenderWidgetHostViewAura;
 
 // DelegatedFrameHostClient implementation for aura, not used in mus.
 class CONTENT_EXPORT DelegatedFrameHostClientAura
-    : public DelegatedFrameHostClient {
+    : public DelegatedFrameHostClient,
+      NON_EXPORTED_BASE(public CompositorResizeLockClient) {
  public:
   explicit DelegatedFrameHostClientAura(
       RenderWidgetHostViewAura* render_widget_host_view);
@@ -32,8 +34,8 @@ class CONTENT_EXPORT DelegatedFrameHostClientAura
   SkColor DelegatedFrameHostGetGutterColor(SkColor color) const override;
   gfx::Size DelegatedFrameHostDesiredSizeInDIP() const override;
   bool DelegatedFrameCanCreateResizeLock() const override;
-  std::unique_ptr<ResizeLock> DelegatedFrameHostCreateResizeLock(
-      bool defer_compositor_lock) override;
+  std::unique_ptr<CompositorResizeLock> DelegatedFrameHostCreateResizeLock()
+      override;
   void DelegatedFrameHostResizeLockWasReleased() override;
   void DelegatedFrameHostSendReclaimCompositorResources(
       int compositor_frame_sink_id,
@@ -42,6 +44,11 @@ class CONTENT_EXPORT DelegatedFrameHostClientAura
   void OnBeginFrame(const cc::BeginFrameArgs& args) override;
   bool IsAutoResizeEnabled() const override;
 
+  // CompositorResizeLockClient implementation.
+  std::unique_ptr<ui::CompositorLock> GetCompositorLock(
+      ui::CompositorLockClient* client) override;
+  void CompositorResizeLockEnded() override;
+
  private:
   RenderWidgetHostViewAura* render_widget_host_view_;