Extensions: run "custom bindings" v8-extensions in content scripts.

chrome/renderer/extensions/chrome_v8_context.h

Index: chrome/renderer/extensions/chrome_v8_context.h
diff --git a/chrome/renderer/extensions/chrome_v8_context.h b/chrome/renderer/extensions/chrome_v8_context.h
index 19165ab608d55b44b8b874c99ed46f185c2137c6..11a4a87bec87d9c990898974345e32d13542e02c 100644
--- a/chrome/renderer/extensions/chrome_v8_context.h
+++ b/chrome/renderer/extensions/chrome_v8_context.h
@@ -26,9 +26,19 @@ class RenderView;
 // we won't need this object and it's a bit less state to keep track of.
 class ChromeV8Context {
  public:
+  enum ContextType {
+    CONTENT_SCRIPT,
+
+    // TODO(kalman): for now, have this as OTHER, since we only currently need
+    // know whether something is a content script or not. However, when
+    // necessary this should enumerate the other types, such as FRAME.
+    OTHER
+  };
+
   ChromeV8Context(v8::Handle<v8::Context> context,
                   WebKit::WebFrame* frame,
-                  const std::string& extension_id);
+                  const std::string& extension_id,
+                  ContextType context_type);
   ~ChromeV8Context();
 
   v8::Handle<v8::Context> v8_context() const {
@@ -46,6 +56,10 @@ class ChromeV8Context {
     web_frame_ = NULL;
   }
 
+  ContextType context_type() const {
+    return context_type_;
+  }
+
   // Returns a special Chrome-specific hidden object that is associated with a
   // context, but not reachable from the JavaScript in that context. This is
   // used by our v8::Extension implementations as a way to share code and as a
@@ -96,6 +110,9 @@ class ChromeV8Context {
   // The extension ID this context is associated with.
   std::string extension_id_;
 
+  // The type of context.
+  ContextType context_type_;
+
   DISALLOW_COPY_AND_ASSIGN(ChromeV8Context);
 };