[WIP] Exposing memory-infra to Skia.

include/utils/SkMemoryDumpProvider.h

Index: include/utils/SkMemoryDumpProvider.h
diff --git a/include/utils/SkMemoryDumpProvider.h b/include/utils/SkMemoryDumpProvider.h
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index 0000000000000000000000000000000000000000..0ab6c61490754291ce0bdd80a7b22090fe73dea8
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+++ b/include/utils/SkMemoryDumpProvider.h
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+/*
+ * Copyright (C) 2014 Google Inc. All rights reserved.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkMemoryAllocatorDump_DEFINED
+#define SkMemoryAllocatorDump_DEFINED
+
+class SkProcessMemoryDump;
+
+// Base interface to be part of the memory tracing infrastructure. Skia classes
+// can implement this interface and register themselves (see
+// Platform::registerMemoryDumpProvider()) to dump stats for their allocators.
+class SK_API SkMemoryDumpProvider {
+ public:
+  virtual ~SkMemoryDumpProvider();
+
+  // Called by the MemoryDumpManager when generating memory dumps. Embedders
+  // are expected to populate the SkProcessMemoryDump* argument and return
+  // true on success or false if anything went wrong and the dump should be
+  // considered invalid.
+  virtual bool onMemoryDump(SkProcessMemoryDump*) = 0;
+};
+
+#endif  // SkMemoryDumpProvider_DEFINED