Add CVPixelBufferRef memory tracking

ui/gl/gl_image_io_surface.mm

 // Copyright 2013 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_io_surface.h"
 
 #include <map>
 
 #include "base/callback_helpers.h"
 #include "base/mac/bind_objc_block.h"
@@ skipping 343 matching lines @@
   // IOSurfaceGetAllocSize will return 0 if io_surface_ is invalid. In this case
   // we log 0 for consistency with other GLImage memory dump functions.
   size_t size_bytes = IOSurfaceGetAllocSize(io_surface_);
 
   base::trace_event::MemoryAllocatorDump* dump =
       pmd->CreateAllocatorDump(dump_name);
   dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize,
                   base::trace_event::MemoryAllocatorDump::kUnitsBytes,
                   static_cast<uint64_t>(size_bytes));
 
+  // The process tracing id is to identify the GpuMemoryBuffer client that
+  // created the allocation. For CVPixelBufferRefs, there is no corresponding
+  // GpuMemoryBuffer, so use an invalid process id.
+  if (cv_pixel_buffer_) {
+    process_tracing_id =
+        base::trace_event::MemoryDumpManager::kInvalidTracingProcessId;
+  }
+
   auto guid =
       GetGenericSharedMemoryGUIDForTracing(process_tracing_id, io_surface_id_);
   pmd->CreateSharedGlobalAllocatorDump(guid);
   pmd->AddOwnershipEdge(dump->guid(), guid);
 }
 
 bool GLImageIOSurface::EmulatingRGB() const {
   return client_internalformat_ == GL_RGB;
 }
 
@@ skipping 21 matching lines @@
 }
 
 // static
 GLImageIOSurface* GLImageIOSurface::FromGLImage(GLImage* image) {
   if (!image || image->GetType() != Type::IOSURFACE)
     return nullptr;
   return static_cast<GLImageIOSurface*>(image);
 }
 
 }  // namespace gl