Repurpose views+content example into a generic multiprocess views runtime

ui/views/examples/content_client/examples_main.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "ui/views/examples/content_client/examples_main.h"
+
 #include "content/public/app/content_main.h"
 #include "ui/views/examples/content_client/examples_main_delegate.h"
 
 #if defined(OS_WIN)
 #include "content/public/app/startup_helper_win.h"
 #include "sandbox/win/src/sandbox_types.h"
 #endif
 
+namespace views {
+namespace examples {
+
 #if defined(OS_WIN)
-int APIENTRY wWinMain(HINSTANCE instance, HINSTANCE, wchar_t*, int) {
+ExamplesMainParams::ExamplesMainParams(HINSTANCE instance)
+    : instance_(instance) {
+}
 #else
-int main(int argc, const char** argv) {
+ExamplesMainParams::ExamplesMainParams(int argc, const char** argv)
+    : argc_(argc), argv_(argv) {
+}
 #endif
-  views::examples::ExamplesMainDelegate delegate;
+
+int ExamplesMainParams::RunMain() {
+  views::examples::ExamplesMainDelegate delegate(this);
   content::ContentMainParams params(&delegate);
 
 #if defined(OS_WIN)
   sandbox::SandboxInterfaceInfo sandbox_info = {0};
   content::InitializeSandboxInfo(&sandbox_info);
-  params.instance = instance;
+  params.instance = instance_;
   params.sandbox_info = &sandbox_info;
 #else
-  params.argc = argc;
-  params.argv = argv;
+  params.argc = argc_;
+  params.argv = argv_;
 #endif
 
   return content::ContentMain(params);
 }
+
+}  // namespace examples
+}  // namespace views