DevTools: create test infrastructure so devtools drives the test

content/shell/browser/shell_devtools_bindings.cc

Index: content/shell/browser/shell_devtools_bindings.cc
diff --git a/content/shell/browser/shell_devtools_bindings.cc b/content/shell/browser/shell_devtools_bindings.cc
index 8c0712262b0362f207078f967b5972a74aea27c8..3bedaad7f3b973dd30fc2a46f9c63bcc82db9d58 100644
--- a/content/shell/browser/shell_devtools_bindings.cc
+++ b/content/shell/browser/shell_devtools_bindings.cc
@@ -137,8 +137,13 @@ void ShellDevToolsBindings::ReadyToCommitNavigation(
     NavigationHandle* navigation_handle) {
 #if !defined(OS_ANDROID)
   content::RenderFrameHost* frame = navigation_handle->GetRenderFrameHost();
-  if (!frame->GetParent())
+  if (navigation_handle->IsInMainFrame()) {
+    frontend_host_.reset(DevToolsFrontendHost::Create(
+        frame,
+        base::Bind(&ShellDevToolsBindings::HandleMessageFromDevToolsFrontend,
+                   base::Unretained(this))));
     return;
+  }
   std::string origin = navigation_handle->GetURL().GetOrigin().spec();
   auto it = extensions_api_.find(origin);
   if (it == extensions_api_.end())
@@ -149,26 +154,6 @@ void ShellDevToolsBindings::ReadyToCommitNavigation(
 #endif
 }
 
-void ShellDevToolsBindings::RenderViewCreated(
-    RenderViewHost* render_view_host) {
-  CreateFrontendHost();
-}
-
-#if !defined(OS_ANDROID)
-void ShellDevToolsBindings::CreateFrontendHost() {
-  if (!frontend_host_) {
-    frontend_host_.reset(DevToolsFrontendHost::Create(
-        web_contents()->GetMainFrame(),
-        base::Bind(&ShellDevToolsBindings::HandleMessageFromDevToolsFrontend,
-                   base::Unretained(this))));
-  }
-}
-#endif
-
-#if defined(OS_ANDROID)
-void ShellDevToolsBindings::CreateFrontendHost() {}
-#endif
-
 void ShellDevToolsBindings::DocumentAvailableInMainFrame() {
   agent_host_ = DevToolsAgentHost::GetOrCreateFor(inspected_contents_);
   agent_host_->AttachClient(this);