Change from_surface default value to true

headless/app/headless_shell.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <memory>
 #include <sstream>
 #include <string>
 #include <utility>
 
 #include "base/base64.h"
@@ skipping 336 matching lines @@
     std::unique_ptr<runtime::EvaluateResult> result) {
   std::unique_ptr<base::Value> value = result->Serialize();
   std::string result_json;
   base::JSONWriter::Write(*value, &result_json);
   printf("%s\n", result_json.c_str());
   InputExpression();
 }
 
 void HeadlessShell::CaptureScreenshot() {
   devtools_client_->GetPage()->GetExperimental()->CaptureScreenshot(
-      page::CaptureScreenshotParams::Builder().SetFromSurface(true).Build(),
+      page::CaptureScreenshotParams::Builder().Build(),
       base::Bind(&HeadlessShell::OnScreenshotCaptured,
                  weak_factory_.GetWeakPtr()));
 }
 
 void HeadlessShell::OnScreenshotCaptured(
     std::unique_ptr<page::CaptureScreenshotResult> result) {
   if (!result) {
     LOG(ERROR) << "Capture screenshot failed";
     Shutdown();
     return;
@@ skipping 265 matching lines @@
     if (net::HttpUtil::IsValidHeaderValue(ua))
       builder.SetUserAgent(ua);
   }
 
   return HeadlessBrowserMain(
       builder.Build(),
       base::Bind(&HeadlessShell::OnStart, base::Unretained(&shell)));
 }
 
 }  // namespace headless