[Tracing] Add hook to PartitionAlloc for heap profiling

third_party/WebKit/Source/platform/PartitionAllocMemoryDumpProvider.h

 // 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.
 
 #ifndef PartitionAllocMemoryDumpProvider_h
 #define PartitionAllocMemoryDumpProvider_h
 
 #include "public/platform/WebCommon.h"
 #include "public/platform/WebMemoryDumpProvider.h"
 
 namespace blink {
 
 class BLINK_PLATFORM_EXPORT PartitionAllocMemoryDumpProvider final : public WebMemoryDumpProvider {
 public:
     static PartitionAllocMemoryDumpProvider* instance();
     ~PartitionAllocMemoryDumpProvider() override;
 
     // WebMemoryDumpProvider implementation.
     bool onMemoryDump(WebMemoryDumpLevelOfDetail, WebProcessMemoryDump*) override;
+    bool supportsHeapProfiling() override { return true; }

[Primiano Tucci (use gerrit), 2015/10/12 16:36:45]

isn't clang going to be unhappy about inline virtual methods?

[Ruud van Asseldonk, 2015/10/13 10:42:18]

I did not hear it complain.

+    void onHeapProfilingEnabled(AllocationHook*, FreeHook*) override;
 
 private:
     PartitionAllocMemoryDumpProvider();
 };
 
 } // namespace blink
 
 #endif // PartitionAllocMemoryDumpProvider_h