[worklets] Split up InProcessWorkerMessagingProxy into a base+worker class.

third_party/WebKit/Source/core/workers/ThreadedGlobalScopeProxy.h

 // Copyright 2016 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 WorkletGlobalScopeProxy_h
-#define WorkletGlobalScopeProxy_h
+#ifndef ThreadedGlobalScopeProxy_h
+#define ThreadedGlobalScopeProxy_h
 
 #include "core/CoreExport.h"
-#include "platform/weborigin/KURL.h"
-#include "wtf/text/WTFString.h"
+#include "wtf/Allocator.h"
 
 namespace blink {
 
-class ScriptSourceCode;
+// The ThreadedGlobalScopeProxy is used to control the lifetime of the worker
+// or worklet's global scope.
+class CORE_EXPORT ThreadedGlobalScopeProxy {

[ikilpatrick, 2016/09/04 00:34:01]

I wasn't sure what to do this with interface; we could have a set of interfaces
for each; or remove this entirely? Up to you.

[nhiroki, 2016/09/06 07:07:08]

I think this (InProcessWorkerObjectProxy) is not useful/necessary. +1 to remove
this.

[ikilpatrick, 2016/09/06 18:59:49]

Sounds good. I sent out a separate patch for this removal+rename, and made this
change dependent.

+    USING_FAST_MALLOC(ThreadedGlobalScopeProxy);
+public:
+    virtual ~ThreadedGlobalScopeProxy() { }
 
-// A proxy to talk to the worklet global scope. The global scope may exist in
-// the main thread or on a different thread.
-class CORE_EXPORT WorkletGlobalScopeProxy {
-public:
-    virtual ~WorkletGlobalScopeProxy() { }
+    virtual void terminateGlobalScope() = 0;
 
-    virtual void evaluateScript(const ScriptSourceCode&) = 0;
-    virtual void terminateWorkletGlobalScope() = 0;
+    virtual bool hasPendingActivity() const = 0;
+
+    virtual void parentObjectDestroyed() = 0;
 };
 
 } // namespace blink
 
-#endif // WorkletGlobalScopeProxy_h
+#endif // ThreadedGlobalScopeProxy_h