Make SameThreadTask/CrossThreadTask internal and remove platform/Task.h

third_party/WebKit/Source/platform/WebTaskRunner.cpp

Index: third_party/WebKit/Source/platform/WebTaskRunner.cpp
diff --git a/third_party/WebKit/Source/platform/WebTaskRunner.cpp b/third_party/WebKit/Source/platform/WebTaskRunner.cpp
index 439963d501f44ebafdfc82663050e5fa11047a30..67a38bef8af6f8d0d56c9b1638266eb8293e68aa 100644
--- a/third_party/WebKit/Source/platform/WebTaskRunner.cpp
+++ b/third_party/WebKit/Source/platform/WebTaskRunner.cpp
@@ -4,10 +4,44 @@
 
 #include "public/platform/WebTaskRunner.h"
 
-#include "platform/Task.h"
-
 namespace blink {
 
+class SameThreadTask : public WebTaskRunner::Task {
+    USING_FAST_MALLOC(SameThreadTask);
+    WTF_MAKE_NONCOPYABLE(SameThreadTask);
+public:
+    explicit SameThreadTask(std::unique_ptr<SameThreadClosure> closure)
+        : m_closure(std::move(closure))
+    {
+    }
+
+    void run() override
+    {
+        (*m_closure)();
+    }
+
+private:
+    std::unique_ptr<SameThreadClosure> m_closure;
+};
+
+class CrossThreadTask : public WebTaskRunner::Task {
+    USING_FAST_MALLOC(CrossThreadTask);
+    WTF_MAKE_NONCOPYABLE(CrossThreadTask);
+public:
+    explicit CrossThreadTask(std::unique_ptr<CrossThreadClosure> closure)
+        : m_closure(std::move(closure))
+    {
+    }
+
+    void run() override
+    {
+        (*m_closure)();
+    }
+
+private:
+    std::unique_ptr<CrossThreadClosure> m_closure;
+};
+
 void WebTaskRunner::postTask(const WebTraceLocation& location, std::unique_ptr<CrossThreadClosure> task)
 {
     postTask(location, new CrossThreadTask(std::move(task)));