Remove GLImage::Destroy().

ui/gl/gl_image_shared_memory.cc

 // Copyright 2014 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 "ui/gl/gl_image_shared_memory.h"
 
 #include "base/logging.h"
 #include "base/memory/shared_memory.h"
 #include "base/numerics/safe_math.h"
 #include "base/process/process_handle.h"
 #include "base/sys_info.h"
 #include "base/trace_event/memory_allocator_dump.h"
 #include "base/trace_event/memory_dump_manager.h"
 #include "base/trace_event/process_memory_dump.h"
 #include "ui/gfx/buffer_format_util.h"
 
 namespace gl {
 
 GLImageSharedMemory::GLImageSharedMemory(const gfx::Size& size,
                                          unsigned internalformat)
     : GLImageMemory(size, internalformat) {}
 
-GLImageSharedMemory::~GLImageSharedMemory() {
-  DCHECK(!shared_memory_);
-}
+GLImageSharedMemory::~GLImageSharedMemory() {}
 
 bool GLImageSharedMemory::Initialize(
     const base::SharedMemoryHandle& handle,
     gfx::GenericSharedMemoryId shared_memory_id,
     gfx::BufferFormat format,
     size_t offset,
     size_t stride) {
   if (!base::SharedMemory::IsHandleValid(handle))
     return false;
 
@@ skipping 29 matching lines @@
           format, stride)) {
     return false;
   }
 
   DCHECK(!shared_memory_);
   shared_memory_ = std::move(shared_memory);
   shared_memory_id_ = shared_memory_id;
   return true;
 }
 
-void GLImageSharedMemory::Destroy(bool have_context) {
-  GLImageMemory::Destroy(have_context);
-  shared_memory_.reset();
-}
-
 void GLImageSharedMemory::OnMemoryDump(
     base::trace_event::ProcessMemoryDump* pmd,
     uint64_t process_tracing_id,
     const std::string& dump_name) {
   size_t size_in_bytes = 0;
 
   if (shared_memory_)
     size_in_bytes = stride() * GetSize().height();
 
   // Dump under "/shared_memory", as the base class may also dump to
   // "/texture_memory".
   base::trace_event::MemoryAllocatorDump* dump =
       pmd->CreateAllocatorDump(dump_name + "/shared_memory");
   dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize,
                   base::trace_event::MemoryAllocatorDump::kUnitsBytes,
                   static_cast<uint64_t>(size_in_bytes));
 
   auto guid = GetGenericSharedMemoryGUIDForTracing(process_tracing_id,
                                                    shared_memory_id_);
   pmd->CreateSharedGlobalAllocatorDump(guid);
   pmd->AddOwnershipEdge(dump->guid(), guid);
 }
 
 }  // namespace gl