Move multipart resource handling to core/fetch (1/2)

content/child/blink_platform_impl.h

Index: content/child/blink_platform_impl.h
diff --git a/content/child/blink_platform_impl.h b/content/child/blink_platform_impl.h
index bdf839e255bb550b080bd6cfe1763ad4bf15fb71..ab81f269a7dee3e08c17dc07150bb24347abaee9 100644
--- a/content/child/blink_platform_impl.h
+++ b/content/child/blink_platform_impl.h
@@ -96,6 +96,11 @@ class CONTENT_EXPORT BlinkPlatformImpl
   blink::WebURLError cancelledError(const blink::WebURL& url) const override;
   bool isReservedIPAddress(const blink::WebString& host) const override;
   bool portAllowed(const blink::WebURL& url) const override;
+  bool parseMultipartHeadersFromBody(const char* bytes,
+                                     size_t size,
+                                     blink::WebURLResponse* response,
+                                     size_t* end) const override;
+
   blink::WebThread* createThread(const char* name) override;
   blink::WebThread* currentThread() override;
   void recordAction(const blink::UserMetricsAction&) override;