Implement a module system for the extension bindings JS.

chrome/renderer/extensions/extension_dispatcher.h

Index: chrome/renderer/extensions/extension_dispatcher.h
diff --git a/chrome/renderer/extensions/extension_dispatcher.h b/chrome/renderer/extensions/extension_dispatcher.h
index 97964302b41e99726f42521fc17514cd447d3aa7..f3f5ce2c450ddbe9b1f9665e3727e5a6e84229f4 100644
--- a/chrome/renderer/extensions/extension_dispatcher.h
+++ b/chrome/renderer/extensions/extension_dispatcher.h
@@ -17,6 +17,7 @@
 #include "chrome/renderer/extensions/chrome_v8_context_set.h"
 #include "v8/include/v8.h"
 
+class ChromeV8Extension;
 class GURL;
 class URLPattern;
 class UserScriptSlave;
@@ -66,8 +67,14 @@ class ExtensionDispatcher : public content::RenderProcessObserver {
                             int extension_group,
                             int world_id);
 
+  bool AllowAPI(WebKit::WebFrame* frame,
+                const std::string& v8_extension_name,
+                int extension_group,
+                int world_id);
+
   void DidCreateScriptContext(WebKit::WebFrame* frame,
                               v8::Handle<v8::Context> context,
+                              int extension_group,
                               int world_id);
   void WillReleaseScriptContext(WebKit::WebFrame* frame,
                                 v8::Handle<v8::Context> context,
@@ -137,10 +144,19 @@ class ExtensionDispatcher : public content::RenderProcessObserver {
                                const Extension* extension,
                                const URLPatternSet& origins);
 
+  // Set up the extension API bindings in |context|.
+  void SetupAPIBindings(ChromeV8Context* context,
+                        WebKit::WebFrame* frame,
+                        int extension_group,
+                        int world_id);
+
   // Finds the extension ID for the current context. This is determined from
   // |world_id| if it's non-zero, or the URL in |frame| if it is.
   std::string GetExtensionID(WebKit::WebFrame* frame, int world_id);
 
+  void RegisterExtensions(ChromeV8Context* context);
+  v8::Handle<v8::Object> BuildBrowserObject(ChromeV8Context* context);
+
   // True if this renderer is running extensions.
   bool is_extension_process_;