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 688b1d8331dde98f7a52fa46292d69fc9204c951..eb549f9da7b4e6e79292f83ebbe1d81257f60625 100644
--- a/chrome/browser/chromeos/login/helper.cc
+++ b/chrome/browser/chromeos/login/helper.cc
@@ -22,6 +22,7 @@
 #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"
@@ -85,6 +86,23 @@ 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";
+    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;
+}

[xiyuan, 2016/11/28 23:43:05]

nit: insert an empty line between this line and the next line.

[Roman Sorokin (ftl), 2016/12/02 12:35:12]

Done.

 }  // namespace
 
 gfx::Rect CalculateScreenBounds(const gfx::Size& size) {
@@ -249,6 +267,14 @@ net::URLRequestContextGetter* GetSigninContext() {
   return ProfileHelper::GetSigninProfile()->GetRequestContext();
 }
 
-}  // namespace login
+// Returns file descriptor of a pipe, open for reading. Pipe keeps the passed
+// data

[xiyuan, 2016/11/28 23:43:05]

nit: Move the comment to header. And end it with a ".".

[Roman Sorokin (ftl), 2016/12/02 12:35:12]

Done.

+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