[tracing] Remove memory-infra plumbing classes for blink

content/child/blink_platform_impl.h

Index: content/child/blink_platform_impl.h
diff --git a/content/child/blink_platform_impl.h b/content/child/blink_platform_impl.h
index 4ec165945e44cd1b3561898702a409248ae00b22..48b15bc77016c1937ba1925eb27deaf9d137fd8f 100644
--- a/content/child/blink_platform_impl.h
+++ b/content/child/blink_platform_impl.h
@@ -41,7 +41,6 @@ class PushDispatcher;
 class ThreadSafeSender;
 class WebCryptoImpl;
 class WebGeofencingProviderImpl;
-class WebMemoryDumpProviderAdapter;
 
 class CONTENT_EXPORT BlinkPlatformImpl
     : NON_EXPORTED_BASE(public blink::Platform) {
@@ -144,12 +143,6 @@ class CONTENT_EXPORT BlinkPlatformImpl
   void updateTraceEventDuration(const unsigned char* category_group_enabled,
                                 const char* name,
                                 TraceEventHandle) override;
-  void registerMemoryDumpProvider(blink::WebMemoryDumpProvider* wmdp) override;
-  void unregisterMemoryDumpProvider(
-      blink::WebMemoryDumpProvider* wmdp) override;
-  blink::WebProcessMemoryDump* createProcessMemoryDump() override;
-  blink::Platform::WebMemoryAllocatorDumpGuid createWebMemoryAllocatorDumpGuid(
-      const blink::WebString& guidStr) override;
 
   blink::WebData loadResource(const char* name) override;
   blink::WebString queryLocalizedString(
@@ -203,9 +196,6 @@ class CONTENT_EXPORT BlinkPlatformImpl
   base::ThreadLocalStorage::Slot current_thread_slot_;
   webcrypto::WebCryptoImpl web_crypto_;
   scoped_ptr<WebGeofencingProviderImpl> geofencing_provider_;
-  base::ScopedPtrHashMap<blink::WebMemoryDumpProvider*,
-                         scoped_ptr<WebMemoryDumpProviderAdapter>>
-      memory_dump_providers_;
 
   scoped_refptr<ThreadSafeSender> thread_safe_sender_;
   scoped_refptr<NotificationDispatcher> notification_dispatcher_;