[headless] Initial skeleton of headless/public/

headless/public/headless_browser.h

Index: headless/public/headless_browser.h
diff --git a/headless/public/headless_browser.h b/headless/public/headless_browser.h
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+// Copyright 2015 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.
+
+#ifndef HEADLESS_PUBLIC_HEADLESS_BROWSER_H_
+#define HEADLESS_PUBLIC_HEADLESS_BROWSER_H_
+
+#include "base/callback.h"
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "headless/public/headless_export.h"
+
+namespace base {
+class SingleThreadTaskRunner;
+
+namespace trace_event {
+class TraceConfig;
+}
+}
+
+namespace gfx {
+class Size;
+}
+
+namespace net {
+class URLRequestContextGetter;
+}
+
+namespace headless {
+class WebContents;
+
+class HEADLESS_EXPORT HeadlessBrowser {
+ public:
+  static HeadlessBrowser* Get();
+
+  struct Options;
+
+  // Main routine for running browser.
+  // Takes command line args and callback to run as soon as browser starts.
+  static int Run(
+      const Options& options,
+      const base::Callback<void(HeadlessBrowser*)>& on_browser_start_callback);
+
+  // Create a new browser tab.
+  virtual scoped_ptr<WebContents> CreateWebContents(const gfx::Size& size) = 0;
+
+  virtual scoped_refptr<base::SingleThreadTaskRunner> BrowserMainThread() = 0;
+  virtual scoped_refptr<base::SingleThreadTaskRunner> RendererMainThread() = 0;
+
+  // Requests browser to stop as soon as possible.
+  // |Run| will return as soon as browser stops.
+  virtual void Stop() = 0;
+
+  virtual void StartTracing(const base::trace_event::TraceConfig& trace_config,
+                            const base::Closure& on_tracing_started) = 0;
+  virtual void StopTracing(const std::string& log_file_name,
+                           const base::Closure& on_tracing_stopped) = 0;
+
+ protected:
+  virtual ~HeadlessBrowser() {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(HeadlessBrowser);
+};
+
+struct HeadlessBrowser::Options {
+  ~Options();
+
+  class Builder;
+
+  // Command line options to be passed to browser.
+  int argc;
+  const char** argv;
+
+  std::string user_agent;
+
+  static const int kInvalidPort = -1;
+  // If not null, create start devtools for remote debugging
+  // on specified port.
+  int devtools_http_port;
+
+  // Optional URLRequestContextGetter for customizing network stack.
+  scoped_refptr<net::URLRequestContextGetter> url_request_context_getter;
+
+ private:
+  Options(int argc, const char** argv);
+};
+
+class HeadlessBrowser::Options::Builder {
+ public:
+  Builder(int argc, const char** argv);
+  ~Builder();
+
+  Builder& SetUserAgent(const std::string& user_agent);
+  Builder& EnableDevToolsServer(int port);
+  Builder& SetURLRequestContextGetter(
+      scoped_refptr<net::URLRequestContextGetter> url_request_context_getter);
+
+  Options Build();
+
+ private:
+  Options options_;
+
+  DISALLOW_COPY_AND_ASSIGN(Builder);
+};
+
+}  // namespace headless
+
+#endif  // HEADLESS_PUBLIC_HEADLESS_BROWSER_H_