[headless] Remove default browser context.

headless/lib/browser/headless_browser_main_parts.cc

Index: headless/lib/browser/headless_browser_main_parts.cc
diff --git a/headless/lib/browser/headless_browser_main_parts.cc b/headless/lib/browser/headless_browser_main_parts.cc
index ec1ae1814d760a2eb7fe88eeeb7aaf4c12204b0d..b2ff2f31074081f33478c30c65e642aa37e61252 100644
--- a/headless/lib/browser/headless_browser_main_parts.cc
+++ b/headless/lib/browser/headless_browser_main_parts.cc
@@ -32,24 +32,17 @@ HeadlessBrowserMainParts::HeadlessBrowserMainParts(HeadlessBrowserImpl* browser)
 HeadlessBrowserMainParts::~HeadlessBrowserMainParts() {}
 
 void HeadlessBrowserMainParts::PreMainMessageLoopRun() {
-  browser_context_.reset(new HeadlessBrowserContextImpl(ProtocolHandlerMap(),
-                                                        browser_->options()));
   if (browser_->options()->devtools_endpoint.address().IsValid()) {
     devtools_http_handler_ =
-        CreateLocalDevToolsHttpHandler(browser_context_.get());
+        CreateLocalDevToolsHttpHandler(browser_->options());
   }
   PlatformInitialize(browser_->options()->window_size);
 }
 
 void HeadlessBrowserMainParts::PostMainMessageLoopRun() {
-  browser_context_.reset();
   devtools_http_handler_.reset();
-  PlatformExit();
-}
 
-HeadlessBrowserContextImpl* HeadlessBrowserMainParts::default_browser_context()
-    const {
-  return browser_context_.get();
+  PlatformExit();
 }
 
 }  // namespace headless