[tracing] Sanitize process memory dumps for background mode

base/trace_event/memory_infra_background_whitelist.h

Index: base/trace_event/memory_infra_background_whitelist.h
diff --git a/base/trace_event/memory_infra_background_whitelist.h b/base/trace_event/memory_infra_background_whitelist.h
new file mode 100644
index 0000000000000000000000000000000000000000..1949a6b6d9602a507947990855984056849c22cb
--- /dev/null
+++ b/base/trace_event/memory_infra_background_whitelist.h
@@ -0,0 +1,45 @@
+// 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.
+
+#ifndef BASE_TRACE_EVENT_MEMORY_INFRA_BACKGROUND_WHITELIST_H_
+#define BASE_TRACE_EVENT_MEMORY_INFRA_BACKGROUND_WHITELIST_H_
+
+// This file contains the whitelists for background mode to limit the tracing
+// overhead and remove sensitive information from traces.
+
+#include <string>
+
+namespace base {
+namespace trace_event {
+
+// The names of dump providers whitelisted for background tracing. Dump
+// providers can be added here only if the background mode dump has very
+// less performance and memory overhead.
+const char* const kDumpProviderWhitelist[] = {

[Primiano Tucci (use gerrit), 2016/06/02 20:24:04]

These should be moved to an anonymous namespace in the .cc file. Or if you need
them to be public only declared here.
If you do this every .cc file that includes this header will end up creating a
new symbol for kDumpProviderWhitelist.

[ssid, 2016/06/03 01:59:46]

Sorry, fixed.

+    // TODO(ssid): Fill this list with dump provider names which support
+    // background mode, crbug.com/613198.
+    nullptr  // End of list marker.
+};
+
+// A list of string names that are allowed for the memory allocator dumps in
+// background mode.
+const char* const kAllocatorDumpNameWhitelist[] = {

[Primiano Tucci (use gerrit), 2016/06/02 20:24:04]

ditto for this.

[ssid, 2016/06/03 01:59:46]

Done.

+    // TODO(ssid): Fill this list with dump names, crbug.com/613198.
+    nullptr  // End of list marker.
+};
+
+// Checks if the given |mdp_name| is in the whitelist.
+bool IsMemoryDumpProviderWhitelisted(const char* mdp_name);
+
+// Checks if the given |mad_name| matches any of the whitelisted patterns.
+bool IsMemoryAllocatorDumpNameWhitelisted(const std::string& mad_name);
+
+// The whitelist is replaced with the given list for tests:
+void SetDumpProviderWhitelistForTesting(const char* const* list);
+void SetAllocatorDumpNameWhitelistForTesting(const char* const* list);
+
+}  // namespace trace_event
+}  // namespace base
+
+#endif  // BASE_TRACE_EVENT_MEMORY_INFRA_BACKGROUND_WHITELIST_H_