[Blimp] Adds Blimp EngineSession and ClientSession skeleton

blimp/engine/browser/blimp_browser_main_parts.cc

 // 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.
 
 #include "blimp/engine/browser/blimp_browser_main_parts.h"
 
-#include "base/command_line.h"
-#include "blimp/engine/browser/blimp_window.h"
-#include "blimp/engine/ui/blimp_screen.h"
+#include "blimp/engine/browser/blimp_browser_context.h"
+#include "blimp/engine/browser/blimp_engine_session.h"
+#include "blimp/net/blimp_client_session.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/common/main_function_params.h"
 #include "net/base/net_module.h"
 #include "net/log/net_log.h"
-#include "url/gurl.h"
 
 namespace blimp {
 namespace engine {
 
-namespace {
-
-const char kDefaultURL[] = "https://www.google.com/";
-
-GURL GetStartupURL() {
-  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
-  const base::CommandLine::StringVector& args = command_line->GetArgs();
-  if (args.empty())
-    return GURL(kDefaultURL);
-
-  GURL url(args[0]);
-  if (url.is_valid() && url.has_scheme())
-    return url;
-
-  return GURL(kDefaultURL);
-}
-
-}  // namespace
-
 BlimpBrowserMainParts::BlimpBrowserMainParts(
     const content::MainFunctionParams& parameters) {}
 
 BlimpBrowserMainParts::~BlimpBrowserMainParts() {}
 
 void BlimpBrowserMainParts::PreMainMessageLoopRun() {
   net_log_.reset(new net::NetLog());
-  browser_context_.reset(new BlimpBrowserContext(false, net_log_.get()));
-  BlimpWindow::Create(browser_context_.get(), GetStartupURL(), nullptr,
-                      gfx::Size());
-}
-
-int BlimpBrowserMainParts::PreCreateThreads() {
-  screen_.reset(new BlimpScreen);
-  DCHECK(!gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_NATIVE));
-  gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, screen_.get());
-  return 0;
+  scoped_ptr<BlimpBrowserContext> browser_context(
+      new BlimpBrowserContext(false, net_log_.get()));
+  engine_session_.reset(new BlimpEngineSession(browser_context.Pass()));
+  engine_session_->Initialize();
+  // TODO(haibinlu): remove this after a real client session can be attached.
+  scoped_ptr<BlimpClientSession> startupSession(new BlimpClientSession);
+  engine_session_->AttachClientSession(startupSession.Pass());
 }
 
 void BlimpBrowserMainParts::PostMainMessageLoopRun() {
-  browser_context_.reset();
+  engine_session_.reset();
+}
+
+BlimpBrowserContext* BlimpBrowserMainParts::GetBrowserContext() {
+  return engine_session_->browser_context();
 }
 
 }  // namespace engine
 }  // namespace blimp