content: Let embedders know when MojoShellConnection is initialized.

chrome/browser/chrome_browser_main.cc

Index: chrome/browser/chrome_browser_main.cc
diff --git a/chrome/browser/chrome_browser_main.cc b/chrome/browser/chrome_browser_main.cc
index d1a7a6e3866a7442a68adb0d2c8ef6b4d0b92f2d..c6a3a4441eacef8e0e1896629956a06b044bec1b 100644
--- a/chrome/browser/chrome_browser_main.cc
+++ b/chrome/browser/chrome_browser_main.cc
@@ -1223,6 +1223,12 @@ int ChromeBrowserMainParts::PreCreateThreadsImpl() {
   return content::RESULT_CODE_NORMAL_EXIT;
 }
 
+void ChromeBrowserMainParts::MojoShellConnectionStarted(
+    content::MojoShellConnection* connection) {
+  for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
+    chrome_extra_parts_[i]->MojoShellConnectionStarted(connection);
+}
+
 void ChromeBrowserMainParts::PreMainMessageLoopRun() {
 #if defined(USE_AURA)
   if (content::MojoShellConnection::GetForProcess() && shell::ShellIsRemote()) {