Refactoring: Move some classes from content/child to platform

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 11e1a4060547301c528b83bd7f7b5d0bc852161b..e9bc1c1bb729b5355e09c9eaf8ae60141494a56d 100644
--- a/content/child/blink_platform_impl.h
+++ b/content/child/blink_platform_impl.h
@@ -51,7 +51,6 @@ class ThreadSafeSender;
 class TraceLogObserverAdapter;
 class WebCryptoImpl;
 class WebGeofencingProviderImpl;
-class WebMemoryDumpProviderAdapter;
 
 class CONTENT_EXPORT BlinkPlatformImpl
     : NON_EXPORTED_BASE(public blink::Platform) {
@@ -99,11 +98,6 @@ class CONTENT_EXPORT BlinkPlatformImpl
   bool portAllowed(const blink::WebURL& url) const override;
   blink::WebThread* createThread(const char* name) override;
   blink::WebThread* currentThread() override;
-  void registerMemoryDumpProvider(blink::WebMemoryDumpProvider* wmdp,
-                                  const char* name) override;
-  void unregisterMemoryDumpProvider(
-      blink::WebMemoryDumpProvider* wmdp) override;
-  blink::WebProcessMemoryDump* createProcessMemoryDump() override;
   blink::Platform::WebMemoryAllocatorDumpGuid createWebMemoryAllocatorDumpGuid(
       const blink::WebString& guidStr) override;
   void addTraceLogEnabledStateObserver(
@@ -165,9 +159,6 @@ 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_;
   base::ScopedPtrHashMap<blink::Platform::TraceLogEnabledStateObserver*,
                          scoped_ptr<TraceLogObserverAdapter>>
       trace_log_observers_;