Move WebCacheMemoryDumpProvider to platform

third_party/WebKit/Source/platform/MemoryCacheDumpProvider.cpp

Index: third_party/WebKit/Source/platform/MemoryCacheDumpProvider.cpp
diff --git a/third_party/WebKit/Source/platform/MemoryCacheDumpProvider.cpp b/third_party/WebKit/Source/platform/MemoryCacheDumpProvider.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..21c3f1e8fb3420a9bd42a44947611432d3315472
--- /dev/null
+++ b/third_party/WebKit/Source/platform/MemoryCacheDumpProvider.cpp
@@ -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 "platform/MemoryCacheDumpProvider.h"
+
+#include "platform/web_process_memory_dump_impl.h"
+#include "public/platform/WebMemoryDumpProvider.h"
+
+namespace blink {
+
+DEFINE_TRACE(MemoryCacheDumpClient)
+{
+}
+
+MemoryCacheDumpProvider* MemoryCacheDumpProvider::instance()
+{
+    DEFINE_STATIC_LOCAL(MemoryCacheDumpProvider, instance, ());
+    return &instance;
+}
+
+bool MemoryCacheDumpProvider::OnMemoryDump(const base::trace_event::MemoryDumpArgs& args, base::trace_event::ProcessMemoryDump* memoryDump)
+{
+    DCHECK(isMainThread());
+    if (!m_client)
+        return false;
+
+    WebMemoryDumpLevelOfDetail level;
+    switch (args.level_of_detail) {
+    case base::trace_event::MemoryDumpLevelOfDetail::LIGHT:
+        level = blink::WebMemoryDumpLevelOfDetail::Light;
+        break;
+    case base::trace_event::MemoryDumpLevelOfDetail::DETAILED:
+        level = blink::WebMemoryDumpLevelOfDetail::Detailed;
+        break;
+    default:
+        NOTREACHED();
+        return false;
+    }
+
+    WebProcessMemoryDumpImpl dump(args.level_of_detail, memoryDump);
+    return m_client->onMemoryDump(level, &dump);
+}
+
+MemoryCacheDumpProvider::MemoryCacheDumpProvider()
+{
+}
+
+MemoryCacheDumpProvider::~MemoryCacheDumpProvider()
+{
+}
+
+} // namespace blink