Add tracing for GL texture objects

cc/resources/shared_bitmap.cc

 // 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 "cc/resources/shared_bitmap.h"
 
 #include "base/logging.h"
 #include "base/numerics/safe_math.h"
 #include "base/rand_util.h"
+#include "base/strings/string_number_conversions.h"
+#include "base/strings/stringprintf.h"
 
 namespace cc {
 
 SharedBitmap::SharedBitmap(uint8* pixels, const SharedBitmapId& id)
     : pixels_(pixels), id_(id) {
 }
 
 SharedBitmap::~SharedBitmap() {
 }
 
@@ skipping 39 matching lines @@
 }
 
 // static
 SharedBitmapId SharedBitmap::GenerateId() {
   SharedBitmapId id;
   // Needs cryptographically-secure random numbers.
   base::RandBytes(id.name, sizeof(id.name));
   return id;
 }
 
+base::trace_event::MemoryAllocatorDumpGuid GetSharedBitmapGUIDForTracing(
+    const SharedBitmapId& bitmap_id) {
+  auto bitmap_id_hex = base::HexEncode(bitmap_id.name, sizeof(bitmap_id.name));
+  return base::trace_event::MemoryAllocatorDumpGuid(
+      base::StringPrintf("sharedbitmap-x-process/%s", bitmap_id_hex.c_str()));
+}
+
 }  // namespace cc