1 files changed, 53 insertions, 0 deletions
diff --git a/chromium/base/trace_event/process_memory_maps.cc b/chromium/base/trace_event/process_memory_maps.cc
new file mode 100644
index 00000000000..d553ee88e80
--- /dev/null
+++ b/chromium/base/trace_event/process_memory_maps.cc
@@ -0,0 +1,53 @@
+// Copyright 2015 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 "base/trace_event/process_memory_maps.h"
+
+#include "base/format_macros.h"
+#include "base/strings/stringprintf.h"
+#include "base/trace_event/trace_event_argument.h"
+
+namespace base {
+namespace trace_event {
+
+// static
+const uint32 ProcessMemoryMaps::VMRegion::kProtectionFlagsRead = 4;
+const uint32 ProcessMemoryMaps::VMRegion::kProtectionFlagsWrite = 2;
+const uint32 ProcessMemoryMaps::VMRegion::kProtectionFlagsExec = 1;
+
+ProcessMemoryMaps::ProcessMemoryMaps() {
+}
+
+ProcessMemoryMaps::~ProcessMemoryMaps() {
+}
+
+void ProcessMemoryMaps::AsValueInto(TracedValue* value) const {
+  static const char kHexFmt[] = "%" PRIx64;
+
+  // Refer to the design doc goo.gl/sxfFY8 for the semantic of these fields.
+  value->BeginArray("vm_regions");
+  for (const auto& region : vm_regions_) {
+    value->BeginDictionary();
+
+    value->SetString("sa", StringPrintf(kHexFmt, region.start_address));
+    value->SetString("sz", StringPrintf(kHexFmt, region.size_in_bytes));
+    value->SetInteger("pf", region.protection_flags);
+    value->SetString("mf", region.mapped_file);
+
+    value->BeginDictionary("bs");  // byte stats
+    value->SetString(
+        "pss", StringPrintf(kHexFmt, region.byte_stats_proportional_resident));
+    value->SetString("prv",
+                     StringPrintf(kHexFmt, region.byte_stats_private_resident));
+    value->SetString("shr",
+                     StringPrintf(kHexFmt, region.byte_stats_shared_resident));
+    value->EndDictionary();
+
+    value->EndDictionary();
+  }
+  value->EndArray();
+}
+
+}  // namespace trace_event
+}  // namespace base