[Streams] Add "useStreamOnResponse" on WebURLRequest.

In order to demonstrate the requestor wants to receive the body stream as a
byte stream, this CL adds a flag in WebURLRequest and ResourceRequest.

BUG=418879

Review URL: https://codereview.chromium.org/700663004

git-svn-id: svn://svn.chromium.org/blink/trunk@185351 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/platform/exported/WebURLRequest.cpp

@@ -299,6 +299,16 @@ void WebURLRequest::setDownloadToFile(bool downloadToFile)
     m_private->m_resourceRequest->setDownloadToFile(downloadToFile);
 }
 
+bool WebURLRequest::useStreamOnResponse() const
+{
+    return m_private->m_resourceRequest->useStreamOnResponse();
+}
+
+void WebURLRequest::setUseStreamOnResponse(bool useStreamOnResponse)
+{
+    m_private->m_resourceRequest->setUseStreamOnResponse(useStreamOnResponse);
+}
+
 bool WebURLRequest::skipServiceWorker() const
 {
     return m_private->m_resourceRequest->skipServiceWorker();

third_party/WebKit/Source/platform/network/ResourceRequest.cpp

@@ -50,6 +50,7 @@ PassOwnPtr<ResourceRequest> ResourceRequest::adopt(PassOwnPtr<CrossThreadResourc
     request->setReportUploadProgress(data->m_reportUploadProgress);
     request->setHasUserGesture(data->m_hasUserGesture);
     request->setDownloadToFile(data->m_downloadToFile);
+    request->setUseStreamOnResponse(data->m_useStreamOnResponse);
     request->setSkipServiceWorker(data->m_skipServiceWorker);
     request->setRequestorID(data->m_requestorID);
     request->setRequestorProcessID(data->m_requestorProcessID);
@@ -80,6 +81,7 @@ PassOwnPtr<CrossThreadResourceRequestData> ResourceRequest::copyData() const
     data->m_reportUploadProgress = m_reportUploadProgress;
     data->m_hasUserGesture = m_hasUserGesture;
     data->m_downloadToFile = m_downloadToFile;
+    data->m_useStreamOnResponse = m_useStreamOnResponse;
     data->m_skipServiceWorker = m_skipServiceWorker;
     data->m_requestorID = m_requestorID;
     data->m_requestorProcessID = m_requestorProcessID;
@@ -410,6 +412,7 @@ void ResourceRequest::initialize(const KURL& url)
     m_reportRawHeaders = false;
     m_hasUserGesture = false;
     m_downloadToFile = false;
+    m_useStreamOnResponse = false;
     m_skipServiceWorker = false;
     m_priority = ResourceLoadPriorityLowest;
     m_intraPriorityValue = 0;

third_party/WebKit/Source/platform/network/ResourceRequest.h

@@ -171,6 +171,11 @@ public:
     bool downloadToFile() const { return m_downloadToFile; }
     void setDownloadToFile(bool downloadToFile) { m_downloadToFile = downloadToFile; }
 
+    // True if the requestor wants to receive a response body as
+    // WebDataConsumerHandle.
+    bool useStreamOnResponse() const { return m_useStreamOnResponse; }
+    void setUseStreamOnResponse(bool useStreamOnResponse) { m_useStreamOnResponse = useStreamOnResponse; }
+
     // True if the request should not be handled by the ServiceWorker.
     bool skipServiceWorker() const { return m_skipServiceWorker; }
     void setSkipServiceWorker(bool skipServiceWorker) { m_skipServiceWorker = skipServiceWorker; }
@@ -217,6 +222,7 @@ private:
     bool m_reportRawHeaders : 1;
     bool m_hasUserGesture : 1;
     bool m_downloadToFile : 1;
+    bool m_useStreamOnResponse : 1;
     bool m_skipServiceWorker : 1;
     ResourceLoadPriority m_priority;
     int m_intraPriorityValue;
@@ -258,6 +264,7 @@ public:
     bool m_hasUserGesture;
     bool m_downloadToFile;
     bool m_skipServiceWorker;
+    bool m_useStreamOnResponse;
     ResourceLoadPriority m_priority;
     int m_intraPriorityValue;
     int m_requestorID;

third_party/WebKit/public/platform/WebURLRequest.h

@@ -224,6 +224,10 @@ public:
     BLINK_PLATFORM_EXPORT bool downloadToFile() const;
     BLINK_PLATFORM_EXPORT void setDownloadToFile(bool);
 
+    // True if the requestor wants to receive the response body as a stream.
+    BLINK_PLATFORM_EXPORT bool useStreamOnResponse() const;
+    BLINK_PLATFORM_EXPORT void setUseStreamOnResponse(bool);
+
     // True if the request should not be handled by the ServiceWorker.
     BLINK_PLATFORM_EXPORT bool skipServiceWorker() const;
     BLINK_PLATFORM_EXPORT void setSkipServiceWorker(bool);