Move SharedBitmapManager implementation out of content/

content/renderer/media/renderer_gpu_video_accelerator_factories.cc

Index: content/renderer/media/renderer_gpu_video_accelerator_factories.cc
diff --git a/content/renderer/media/renderer_gpu_video_accelerator_factories.cc b/content/renderer/media/renderer_gpu_video_accelerator_factories.cc
index 9ba79d4aa0e5a095c48cca0e87caced04f0330e0..c531a23674d973e9356813aaef2ad83e4023a068 100644
--- a/content/renderer/media/renderer_gpu_video_accelerator_factories.cc
+++ b/content/renderer/media/renderer_gpu_video_accelerator_factories.cc
@@ -12,6 +12,7 @@
 #include "base/metrics/histogram_macros.h"
 #include "base/unguessable_token.h"
 #include "cc/output/context_provider.h"
+#include "components/display_compositor/child/child_shared_bitmap_manager.h"
 #include "content/child/child_thread_impl.h"
 #include "content/renderer/render_thread_impl.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
@@ -305,7 +306,7 @@ RendererGpuVideoAcceleratorFactories::GetGLContextLock() {
 std::unique_ptr<base::SharedMemory>
 RendererGpuVideoAcceleratorFactories::CreateSharedMemory(size_t size) {
   std::unique_ptr<base::SharedMemory> mem(
-      ChildThreadImpl::AllocateSharedMemory(size));
+      display_compositor::ChildSharedBitmapManager::AllocateSharedMemory(size));
   if (mem && !mem->Map(size))
     return nullptr;
   return mem;