Implement GetSkiaTraceMemoryDump and AddSuballocation on chrome blink platform impl

content/child/web_process_memory_dump_impl.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 CONTENT_CHILD_WEB_PROCESS_MEMORY_DUMP_IMPL_H_
 #define CONTENT_CHILD_WEB_PROCESS_MEMORY_DUMP_IMPL_H_
 
 #include "base/containers/scoped_ptr_hash_map.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
+#include "base/trace_event/memory_dump_request_args.h"
 #include "content/common/content_export.h"
 #include "third_party/WebKit/public/platform/WebProcessMemoryDump.h"
 
 namespace base {
 namespace trace_event {
 class MemoryAllocatorDump;
 class ProcessMemoryDump;
 }  // namespace base
 }  // namespace trace_event
 
+namespace skia {
+class SkTraceMemoryDump_Chrome;
+}  // namespace skia
+
 namespace content {
 
 class WebMemoryAllocatorDumpImpl;
 
 // Implements the blink::WebProcessMemoryDump interface by means of proxying the
 // calls to createMemoryAllocatorDump() to the underlying
 // base::trace_event::ProcessMemoryDump instance.
 class CONTENT_EXPORT WebProcessMemoryDumpImpl final
     : public NON_EXPORTED_BASE(blink::WebProcessMemoryDump) {
  public:
   // Creates a standalone WebProcessMemoryDumpImp, which owns the underlying
   // ProcessMemoryDump.
   WebProcessMemoryDumpImpl();
 
   // Wraps (without owning) an existing ProcessMemoryDump.
   explicit WebProcessMemoryDumpImpl(
+      base::trace_event::MemoryDumpLevelOfDetail level_of_detail,
       base::trace_event::ProcessMemoryDump* process_memory_dump);
 
   ~WebProcessMemoryDumpImpl() override;
 
   // blink::WebProcessMemoryDump implementation.
   blink::WebMemoryAllocatorDump* createMemoryAllocatorDump(
       const blink::WebString& absolute_name) override;
   blink::WebMemoryAllocatorDump* createMemoryAllocatorDump(
       const blink::WebString& absolute_name,
       blink::WebMemoryAllocatorDumpGuid guid) override;
   blink::WebMemoryAllocatorDump* getMemoryAllocatorDump(
       const blink::WebString& absolute_name) const override;
   void clear() override;
   void takeAllDumpsFrom(blink::WebProcessMemoryDump* other) override;
   void AddOwnershipEdge(blink::WebMemoryAllocatorDumpGuid source,
                         blink::WebMemoryAllocatorDumpGuid target,
                         int importance) override;
   void AddOwnershipEdge(blink::WebMemoryAllocatorDumpGuid source,
                         blink::WebMemoryAllocatorDumpGuid target) override;
+  virtual void AddSuballocation(
+      blink::WebMemoryAllocatorDumpGuid source,
+      const blink::WebString& targetNodeName) override;
+  virtual SkTraceMemoryDump* CreateDumpAdapterForSkia(
+      const blink::WebString& dumpNamePrefix) override;
 
   const base::trace_event::ProcessMemoryDump* process_memory_dump() const {
     return process_memory_dump_;
   }
 
  private:
   FRIEND_TEST_ALL_PREFIXES(WebProcessMemoryDumpImplTest, IntegrationTest);
 
   blink::WebMemoryAllocatorDump* createWebMemoryAllocatorDump(
       base::trace_event::MemoryAllocatorDump* memory_allocator_dump);
 
   // Only for the case of ProcessMemoryDump being owned (i.e. the default ctor).
   scoped_ptr<base::trace_event::ProcessMemoryDump> owned_process_memory_dump_;
 
   // The underlying ProcessMemoryDump instance to which the
   // createMemoryAllocatorDump() calls will be proxied to.
   base::trace_event::ProcessMemoryDump* process_memory_dump_;  // Not owned.
 
+  // TODO(ssid): Remove it once this information is added to ProcessMemoryDump.
+  base::trace_event::MemoryDumpLevelOfDetail level_of_detail_;
+
   // Reverse index of MemoryAllocatorDump -> WebMemoryAllocatorDumpImpl wrapper.
   // By design WebMemoryDumpProvider(s) are not supposed to hold the pointer
   // to the WebProcessMemoryDump passed as argument of the onMemoryDump() call.
   // Those pointers are valid only within the scope of the call and can be
   // safely torn down once the WebProcessMemoryDumpImpl itself is destroyed.
   base::ScopedPtrHashMap<base::trace_event::MemoryAllocatorDump*,
                          scoped_ptr<WebMemoryAllocatorDumpImpl>>
       memory_allocator_dumps_;
 
+  // Stores SkTraceMemoryDump for the current ProcessMemoryDump.
+  ScopedVector<skia::SkTraceMemoryDump_Chrome> sk_trace_dump_list_;
+
   DISALLOW_COPY_AND_ASSIGN(WebProcessMemoryDumpImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_WEB_PROCESS_MEMORY_DUMP_IMPL_H_