Support sharing of ContentMain and BrowserMain code with embedded use cases.

content/shell/shell_browser_main.h

Index: content/shell/shell_browser_main.h
===================================================================
--- content/shell/shell_browser_main.h	(revision 117304)
+++ content/shell/shell_browser_main.h	(working copy)
@@ -10,6 +10,8 @@
 #include "base/memory/scoped_ptr.h"
 #include "content/public/browser/browser_main_parts.h"
 
+class ShellMainDelegate;
+
 namespace base {
 class Thread;
 }
@@ -25,14 +27,16 @@
 
 class ShellBrowserMainParts : public BrowserMainParts {
  public:
-  explicit ShellBrowserMainParts(const content::MainFunctionParams& parameters);
+  explicit ShellBrowserMainParts(ShellMainDelegate* delegate,
+                                 const content::MainFunctionParams& parameters);
   virtual ~ShellBrowserMainParts();
 
   virtual void PreEarlyInitialization() OVERRIDE {}
   virtual void PostEarlyInitialization() OVERRIDE {}
   virtual void PreMainMessageLoopStart() OVERRIDE {}
+  virtual MessageLoop* GetMainMessageLoop() OVERRIDE;
+  virtual void PostMainMessageLoopStart() OVERRIDE {}
   virtual void ToolkitInitialized() OVERRIDE {}
-  virtual void PostMainMessageLoopStart() OVERRIDE {}
   virtual void PreCreateThreads() OVERRIDE {}
   virtual void PreMainMessageLoopRun() OVERRIDE;
   virtual bool MainMessageLoopRun(int* result_code) OVERRIDE;
@@ -42,6 +46,9 @@
   ui::Clipboard* GetClipboard();
 
  private:
+  // The delegate will always outlive this class.
+  ShellMainDelegate* delegate_;
+
   scoped_ptr<ShellBrowserContext> browser_context_;
 
   scoped_ptr<ui::Clipboard> clipboard_;