Add Content-Type header to net::ReportSender reports

net/url_request/report_sender_unittest.cc

Index: net/url_request/report_sender_unittest.cc
diff --git a/net/url_request/report_sender_unittest.cc b/net/url_request/report_sender_unittest.cc
index 2143fbac8762c318b4f9e482dc66c9b2e70a0e5c..daafab8ded5f4e9dea6c899a682da25bd9f2033f 100644
--- a/net/url_request/report_sender_unittest.cc
+++ b/net/url_request/report_sender_unittest.cc
@@ -87,6 +87,10 @@ class TestReportSenderNetworkDelegate : public NetworkDelegateImpl {
     expect_cookies_ = expect_cookies;
   }
 
+  void set_expected_content_type(const std::string& expected_content_type) {
+    expected_content_type_ = expected_content_type;
+  }
+
   // NetworkDelegateImpl implementation.
   int OnBeforeURLRequest(URLRequest* request,
                          const CompletionCallback& callback,
@@ -103,6 +107,15 @@ class TestReportSenderNetworkDelegate : public NetworkDelegateImpl {
       EXPECT_TRUE(request->load_flags() & LOAD_DO_NOT_SAVE_COOKIES);
     }
 
+    if (!expected_content_type_.empty()) {
+      HttpRequestHeaders headers;
+      request->GetFullRequestHeaders(&headers);
+      std::string content_type;
+      EXPECT_TRUE(
+          headers.GetHeader(HttpRequestHeaders::kContentType, &content_type));
+      EXPECT_EQ(expected_content_type_, content_type);
+    }
+
     CheckUploadData(*request, &expect_reports_);
 
     // Unconditionally return OK, since the sender ignores the results
@@ -123,6 +136,7 @@ class TestReportSenderNetworkDelegate : public NetworkDelegateImpl {
   GURL expect_url_;
   std::set<std::string> expect_reports_;
   bool expect_cookies_;
+  std::string expected_content_type_;
 
   DISALLOW_COPY_AND_ASSIGN(TestReportSenderNetworkDelegate);
 };