[tracing] Remove memory-infra plumbing classes for blink

third_party/WebKit/public/platform/Platform.h

Index: third_party/WebKit/public/platform/Platform.h
diff --git a/third_party/WebKit/public/platform/Platform.h b/third_party/WebKit/public/platform/Platform.h
index 3781d37de2b28f91c4177459d11721b846f8e9d1..62748d1ff68ec2d62e96ebc94a5347191ef81573 100644
--- a/third_party/WebKit/public/platform/Platform.h
+++ b/third_party/WebKit/public/platform/Platform.h
@@ -85,7 +85,6 @@ class WebMIDIAccessorClient;
 class WebMediaRecorderHandler;
 class WebMediaStreamCenter;
 class WebMediaStreamCenterClient;
-class WebMemoryDumpProvider;
 class WebMessagePortChannel;
 class WebMimeRegistry;
 class WebNavigatorConnectProvider;
@@ -93,7 +92,6 @@ class WebNotificationManager;
 class WebPermissionClient;
 class WebPluginListBuilder;
 class WebPrescientNetworking;
-class WebProcessMemoryDump;
 class WebPublicSuffixList;
 class WebPushProvider;
 class WebRTCPeerConnectionHandler;
@@ -574,24 +572,6 @@ public:
     virtual void recordRappor(const char* metric, const WebString& sample) { }
     virtual void recordRapporURL(const char* metric, const blink::WebURL& url) { }
 
-    // Registers a memory dump provider. The WebMemoryDumpProvider::onMemoryDump
-    // method will be called on the same thread that called the
-    // registerMemoryDumpProvider() method.
-    // See crbug.com/458295 for design docs.
-    virtual void registerMemoryDumpProvider(blink::WebMemoryDumpProvider*) { }
-
-    // Must be called on the thread that called registerMemoryDumpProvider().
-    virtual void unregisterMemoryDumpProvider(blink::WebMemoryDumpProvider*) { }
-
-    // Returns a newly allocated WebProcessMemoryDump instance.
-    virtual blink::WebProcessMemoryDump* createProcessMemoryDump() { return nullptr; }
-
-    typedef uint64_t WebMemoryAllocatorDumpGuid;
-
-    // Returns guid corresponding to the given string (the hash value) for
-    // creating a WebMemoryAllocatorDump.
-    virtual WebMemoryAllocatorDumpGuid createWebMemoryAllocatorDumpGuid(const WebString& guidStr) { return 0; }
-
     // GPU ----------------------------------------------------------------
     //
     // May return null if GPU is not supported.