Add support for origin trials in workers.

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

Index: third_party/WebKit/Source/core/workers/WorkerScriptLoader.h
diff --git a/third_party/WebKit/Source/core/workers/WorkerScriptLoader.h b/third_party/WebKit/Source/core/workers/WorkerScriptLoader.h
index 29d62577a0a89c6b41add162954ce6c63dbf4038..7762a0fa094e92642127631ad7c5b833d7c55c26 100644
--- a/third_party/WebKit/Source/core/workers/WorkerScriptLoader.h
+++ b/third_party/WebKit/Source/core/workers/WorkerScriptLoader.h
@@ -84,6 +84,8 @@ public:
 
     WebAddressSpace responseAddressSpace() const { return m_responseAddressSpace; }
 
+    const Vector<String>* originTrialTokens() const { return m_originTrialTokens.get(); }
+
     // ThreadableLoaderClient
     void didReceiveResponse(unsigned long /*identifier*/, const ResourceResponse&, PassOwnPtr<WebDataConsumerHandle>) override;
     void didReceiveData(const char* data, unsigned dataLength) override;
@@ -124,6 +126,7 @@ private:
     WebURLRequest::RequestContext m_requestContext;
     Persistent<ContentSecurityPolicy> m_contentSecurityPolicy;
     WebAddressSpace m_responseAddressSpace;
+    std::unique_ptr<Vector<String>> m_originTrialTokens;

[haraken, 2016/04/28 19:29:30]

Per yutak's PSA
(https://groups.google.com/a/chromium.org/d/msg/blink-dev/eCDdVh-VsM4/Fe-T-QXB...),
it looks better to use OwnPtr for now (at least we should avoid replacing
existing OwnPtrs with unique_ptrs).

[Marijn Kruisselbrink, 2016/04/28 21:54:24]

I'm a bit confused if I should or shouldn't be using unique_ptr for new code,
since I thought the previous PSA was that new code could/should do so. And not
using unique_ptr here would be somewhat inconvenient since it is assigned from a
method I added in a previous CL that already returns a unique_ptr.

[haraken, 2016/04/29 06:46:32]

I looked at the emails and it looks like he's saying that 1) new code should use
unique_ptr but 2) existing code should not replace OwnPtr with unique_ptr yet.

So this CL looks fine. Sorry about the noise.

 };
 
 } // namespace blink