Remove CreateGpuMemoryBufferFromClientId and plumbing

blimp/client/feature/compositor/blimp_gpu_memory_buffer_manager.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "blimp/client/feature/compositor/blimp_gpu_memory_buffer_manager.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
@@ skipping 115 matching lines @@
     gfx::BufferFormat format) {
   if (handle.type != gfx::SHARED_MEMORY_BUFFER)
     return nullptr;
 
   return base::WrapUnique<gfx::GpuMemoryBuffer>(new GpuMemoryBufferImpl(
       size, format,
       base::WrapUnique(new base::SharedMemory(handle.handle, false)),
       handle.offset, handle.stride));
 }
 
-std::unique_ptr<gfx::GpuMemoryBuffer>
-BlimpGpuMemoryBufferManager::CreateGpuMemoryBufferFromClientId(
-    int client_id,
-    const gfx::GpuMemoryBufferId& gpu_memory_buffer_id) {
-  NOTIMPLEMENTED();
-  return nullptr;
-}
-
 gfx::GpuMemoryBuffer*
 BlimpGpuMemoryBufferManager::GpuMemoryBufferFromClientBuffer(
     ClientBuffer buffer) {
   return reinterpret_cast<gfx::GpuMemoryBuffer*>(buffer);
 }
 
 void BlimpGpuMemoryBufferManager::SetDestructionSyncToken(
     gfx::GpuMemoryBuffer* buffer,
     const gpu::SyncToken& sync_token) {
   NOTIMPLEMENTED();
 }
 
 }  // namespace client
 }  // namespace blimp