Add hooks to content to request permission to connect to the PPAPI broker.

webkit/plugins/ppapi/ppb_broker_impl.cc

Index: webkit/plugins/ppapi/ppb_broker_impl.cc
diff --git a/webkit/plugins/ppapi/ppb_broker_impl.cc b/webkit/plugins/ppapi/ppb_broker_impl.cc
index 2386e0dcec87288038dee8e875911a8fdb7074db..49342fcae55e1700b6a417591905cfc5ab9d4fa8 100644
--- a/webkit/plugins/ppapi/ppb_broker_impl.cc
+++ b/webkit/plugins/ppapi/ppb_broker_impl.cc
@@ -6,6 +6,9 @@
 
 #include "base/logging.h"
 #include "ppapi/shared_impl/platform_file.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebElement.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebPluginContainer.h"
 #include "webkit/plugins/ppapi/common.h"
 #include "webkit/plugins/ppapi/plugin_module.h"
 #include "webkit/plugins/ppapi/resource_helper.h"
@@ -75,6 +78,11 @@ int32_t PPB_Broker_Impl::GetHandle(int32_t* handle) {
   return PP_OK;
 }
 
+GURL PPB_Broker_Impl::GetDocumentUrl() {
+  PluginInstance* plugin_instance = ResourceHelper::GetPluginInstance(this);
+  return plugin_instance->container()->element().document().url();
+}
+
 // Transfers ownership of the handle to the plugin.
 void PPB_Broker_Impl::BrokerConnected(int32_t handle, int32_t result) {
   DCHECK(pipe_handle_ ==