Introduce WebTaskRunner Patch 3/5

public/platform/WebThread.h

Index: public/platform/WebThread.h
diff --git a/public/platform/WebThread.h b/public/platform/WebThread.h
index 51f204b49c7f448e75445e5258fa6470e871be3f..0a33daca09b53af5e1b3204d142e4924a197ab94 100644
--- a/public/platform/WebThread.h
+++ b/public/platform/WebThread.h
@@ -28,10 +28,6 @@
 #include "WebCommon.h"
 #include <stdint.h>
 
-#ifdef INSIDE_BLINK
-#include "wtf/Functional.h"
-#endif
-
 namespace blink {
 class WebScheduler;
 class WebTaskRunner;
@@ -54,6 +50,7 @@ public:
         virtual void run(double deadlineSeconds) = 0;
     };
 
+    // TODO(alexclarke): Remove this once it's no longer referenced by chromium.
     class BLINK_PLATFORM_EXPORT Task {
     public:
         virtual ~Task() { }
@@ -71,8 +68,8 @@ public:
     // object. It is safe to invoke postTask() and postDelayedTask() from any
     // thread.
     // TODO(alexclarke): Remove postTask & postDelayedTask.
-    virtual void postTask(const WebTraceLocation&, Task*) = 0;
-    virtual void postDelayedTask(const WebTraceLocation&, Task*, long long delayMs) = 0;
+    virtual void postTask(const WebTraceLocation&, Task*) { }
+    virtual void postDelayedTask(const WebTraceLocation&, Task*, long long delayMs) { };
 
     // Returns a WebTaskRunner bound to the underlying scheduler's default task queue.
     virtual WebTaskRunner* taskRunner() { return nullptr; }
@@ -87,12 +84,6 @@ public:
     virtual WebScheduler* scheduler() const = 0;
 
     virtual ~WebThread() { }
-
-#ifdef INSIDE_BLINK
-    // Helpers for posting bound functions as tasks.
-    void postTask(const WebTraceLocation&, PassOwnPtr<Function<void()>>);
-    void postDelayedTask(const WebTraceLocation&, PassOwnPtr<Function<void()>>, long long delayMs);
-#endif
 };
 
 } // namespace blink