service worker: use 200 OK for update requests even in the no update case

third_party/WebKit/public/web/WebEmbeddedWorkerStartData.h

Index: third_party/WebKit/public/web/WebEmbeddedWorkerStartData.h
diff --git a/third_party/WebKit/public/web/WebEmbeddedWorkerStartData.h b/third_party/WebKit/public/web/WebEmbeddedWorkerStartData.h
index 3edf6f5e982d87539c0e361584d19ed6b23348cf..33f850e3fc13bf052582b349d407b4ca704bc5be 100644
--- a/third_party/WebKit/public/web/WebEmbeddedWorkerStartData.h
+++ b/third_party/WebKit/public/web/WebEmbeddedWorkerStartData.h
@@ -39,6 +39,10 @@
 namespace blink {
 
 struct WebEmbeddedWorkerStartData {
+    enum PauseAfterDownloadMode {
+        DontPauseAfterDownload,
+        PauseAfterDownload,
+    };
     enum WaitForDebuggerMode {
         DontWaitForDebugger,
         WaitForDebugger
@@ -46,12 +50,16 @@ struct WebEmbeddedWorkerStartData {
 
     WebURL scriptURL;
     WebString userAgent;
+    PauseAfterDownloadMode pauseAfterDownloadMode;
     WaitForDebuggerMode waitForDebuggerMode;
     WebSettings::V8CacheOptions v8CacheOptions;
 
     WebEmbeddedWorkerStartData()
-        : waitForDebuggerMode(DontWaitForDebugger)
-        , v8CacheOptions(WebSettings::V8CacheOptionsDefault) { }
+        : pauseAfterDownloadMode(DontPauseAfterDownload)
+        , waitForDebuggerMode(DontWaitForDebugger)
+        , v8CacheOptions(WebSettings::V8CacheOptionsDefault)
+    {
+    }
 };
 
 } // namespace blink