Extract shell methods from ApplicationImpl into a base class, and pass this to Initialize() instead.

components/devtools_service/devtools_service_delegate.cc

Index: components/devtools_service/devtools_service_delegate.cc
diff --git a/components/devtools_service/devtools_service_delegate.cc b/components/devtools_service/devtools_service_delegate.cc
index 3989eb7c1635d7a8ee331744aba59be6f6a4a700..5382703394382a526db3ac52d209090d82085afb 100644
--- a/components/devtools_service/devtools_service_delegate.cc
+++ b/components/devtools_service/devtools_service_delegate.cc
@@ -11,7 +11,7 @@
 #include "components/devtools_service/devtools_service.h"
 #include "mojo/common/url_type_converters.h"
 #include "mojo/shell/public/cpp/application_connection.h"
-#include "mojo/shell/public/cpp/application_impl.h"
+#include "mojo/shell/public/cpp/shell.h"
 #include "url/gurl.h"
 
 namespace devtools_service {
@@ -32,8 +32,10 @@ DevToolsServiceDelegate::DevToolsServiceDelegate() {
 DevToolsServiceDelegate::~DevToolsServiceDelegate() {
 }
 
-void DevToolsServiceDelegate::Initialize(mojo::ApplicationImpl* app) {
-  service_.reset(new DevToolsService(app));
+void DevToolsServiceDelegate::Initialize(mojo::Shell* shell,
+                                         const std::string& url,
+                                         uint32_t id) {
+  service_.reset(new DevToolsService(shell));
 }
 
 bool DevToolsServiceDelegate::AcceptConnection(