Port new symbol API to symupload on Mac.

- See documentation in Linux implementation commit: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1422400.

Change-Id: If3ff256e63f2db3ac9c0be78cfc17754d532cb88
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1497653
Reviewed-by: Ivan Penkov <ivanpe@chromium.org>

src/tools/mac/symupload/HTTPRequest.h

@@ -0,0 +1,73 @@
+// Copyright (c) 2019, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+/**
+ Represents a single HTTP request. Sending the request is synchronous.
+ Once the send is complete, the response will be set.
+
+ This is a base interface that specific HTTP requests derive from.
+ It is not intended to be instantiated directly.
+ */
+@interface HTTPRequest : NSObject {
+ @protected
+  NSURL *URL_;                   // The destination URL (STRONG)
+  NSHTTPURLResponse *response_;  // The response from the send (STRONG)
+}
+
+/**
+ Initializes the HTTPRequest and sets its URL.
+ */
+- (id)initWithURL:(NSURL *)URL;
+
+- (NSURL *)URL;
+
+- (NSHTTPURLResponse*) response;
+
+- (NSString*)HTTPMethod;   // Internal, don't call outside class hierarchy.
+
+- (NSString*)contentType;  // Internal, don't call outside class hierarchy.
+
+- (NSData*)bodyData;       // Internal, don't call outside class hierarchy.
+
+- (NSData *)send:(NSError **)error;
+
+/**
+ Appends a file to the HTTP request, either by filename or by file content
+ (in the form of NSData).
+ */
++ (void)appendFileToBodyData:(NSMutableData *)data
+                    withName:(NSString*)name
+              withFileOrData:(id)fileOrData;
+
+@end
+
+NS_ASSUME_NONNULL_END