Chromad: Add authentication flow

chrome/browser/chromeos/login/helper.cc

Index: chrome/browser/chromeos/login/helper.cc
diff --git a/chrome/browser/chromeos/login/helper.cc b/chrome/browser/chromeos/login/helper.cc
index 1de84556e79e258d90235f3f1fc921f7ec985692..717321103f19a7e19473dfd1dc2474ba8a6faf38 100644
--- a/chrome/browser/chromeos/login/helper.cc
+++ b/chrome/browser/chromeos/login/helper.cc
@@ -21,6 +21,7 @@
 #include "chromeos/network/network_state_handler.h"
 #include "chromeos/network/network_util.h"
 #include "components/guest_view/browser/guest_view_manager.h"
+#include "content/public/browser/browser_thread.h"
 #include "content/public/browser/storage_partition.h"
 #include "content/public/browser/web_contents.h"
 #include "extensions/browser/guest_view/web_view/web_view_guest.h"
@@ -84,6 +85,24 @@ content::StoragePartition* GetPartition(content::WebContents* embedder,
                         : nullptr;
 }
 
+base::ScopedFD GetDataReadPipe(const std::string& data) {
+  DCHECK(content::BrowserThread::GetBlockingPool()->RunsTasksOnCurrentThread());
+  int pipe_fds[2];
+  if (!base::CreateLocalNonBlockingPipe(pipe_fds)) {
+    LOG(ERROR) << "Failed to create pipe";

[dcheng, 2016/12/20 09:26:26]

Is there a reason this code uses LOG instead of DLOG? This costs us size in
official builds by bloating it with additional strings. Similar comment applies
to other LOG statements in this CL.

[Roman Sorokin (ftl), 2016/12/20 12:43:59]

Done.

+    return base::ScopedFD();
+  }
+  base::ScopedFD pipe_read_end(pipe_fds[0]);
+  base::ScopedFD pipe_write_end(pipe_fds[1]);
+
+  if (!base::WriteFileDescriptor(pipe_write_end.get(), data.c_str(),
+                                 data.size())) {
+    LOG(ERROR) << "Failed to write to pipe";
+    return base::ScopedFD();
+  }
+  return pipe_read_end;
+}
+
 }  // namespace
 
 gfx::Rect CalculateScreenBounds(const gfx::Size& size) {
@@ -243,6 +262,13 @@ net::URLRequestContextGetter* GetSigninContext() {
   return signin_partition->GetURLRequestContext();
 }
 
+void GetPipeReadEnd(const std::string& data,
+                    const OnPipeReadyCallback& callback) {
+  base::PostTaskAndReplyWithResult(
+      content::BrowserThread::GetBlockingPool(), FROM_HERE,
+      base::Bind(&GetDataReadPipe, data), callback);
+}
+
 }  // namespace login
 
 }  // namespace chromeos