Remove all uses of the global Dispatcher Get function.

ppapi/proxy/ppb_image_data_proxy.cc

Index: ppapi/proxy/ppb_image_data_proxy.cc
===================================================================
--- ppapi/proxy/ppb_image_data_proxy.cc	(revision 74021)
+++ ppapi/proxy/ppb_image_data_proxy.cc	(working copy)
@@ -198,7 +198,7 @@
     object->Unmap();
 }
 
-const PPB_ImageData ppb_imagedata = {
+const PPB_ImageData image_data_interface = {
   &GetNativeImageDataFormat,
   &IsImageDataFormatSupported,
   &Create,
@@ -208,6 +208,11 @@
   &Unmap,
 };
 
+InterfaceProxy* CreateImageDataProxy(Dispatcher* dispatcher,
+                                     const void* target_interface) {
+  return new PPB_ImageData_Proxy(dispatcher, target_interface);
+}
+
 }  // namespace
 
 PPB_ImageData_Proxy::PPB_ImageData_Proxy(Dispatcher* dispatcher,
@@ -218,14 +223,18 @@
 PPB_ImageData_Proxy::~PPB_ImageData_Proxy() {
 }
 
-const void* PPB_ImageData_Proxy::GetSourceInterface() const {
-  return &ppb_imagedata;
+// static
+const InterfaceProxy::Info* PPB_ImageData_Proxy::GetInfo() {
+  static const Info info = {
+    &image_data_interface,
+    PPB_IMAGEDATA_INTERFACE,
+    INTERFACE_ID_PPB_IMAGE_DATA,
+    false,
+    &CreateImageDataProxy,
+  };
+  return &info;
 }
 
-InterfaceID PPB_ImageData_Proxy::GetInterfaceId() const {
-  return INTERFACE_ID_PPB_IMAGE_DATA;
-}
-
 bool PPB_ImageData_Proxy::OnMessageReceived(const IPC::Message& msg) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(PPB_ImageData_Proxy, msg)