Add comment to PPB_MouseInputEvent version 1.1 that GetMovement hasn't been supported.

ppapi/proxy/ppb_input_event_proxy.cc

Index: ppapi/proxy/ppb_input_event_proxy.cc
diff --git a/ppapi/proxy/ppb_input_event_proxy.cc b/ppapi/proxy/ppb_input_event_proxy.cc
index 655b10dae419fa240350b621ae3ba0ab1a98d5f6..bbc7d009822d8466a4b4257dee229d3d6a547b68 100644
--- a/ppapi/proxy/ppb_input_event_proxy.cc
+++ b/ppapi/proxy/ppb_input_event_proxy.cc
@@ -60,10 +60,10 @@ const InterfaceProxy::Info* PPB_InputEvent_Proxy::GetKeyboardInputEventInfo() {
 }
 
 // static
-const InterfaceProxy::Info* PPB_InputEvent_Proxy::GetMouseInputEventInfo1_0() {
+const InterfaceProxy::Info* PPB_InputEvent_Proxy::GetMouseInputEventInfo() {
   static const Info info = {
-    thunk::GetPPB_MouseInputEvent_1_0_Thunk(),
-    PPB_MOUSE_INPUT_EVENT_INTERFACE_1_0,
+    thunk::GetPPB_MouseInputEvent_Thunk(),
+    PPB_MOUSE_INPUT_EVENT_INTERFACE,
     INTERFACE_ID_NONE,
     false,
     &CreateInputEventProxy,
@@ -72,10 +72,10 @@ const InterfaceProxy::Info* PPB_InputEvent_Proxy::GetMouseInputEventInfo1_0() {
 }
 
 // static
-const InterfaceProxy::Info* PPB_InputEvent_Proxy::GetMouseInputEventInfo1_1() {
+const InterfaceProxy::Info* PPB_InputEvent_Proxy::GetMouseInputEventDevInfo() {
   static const Info info = {
-    thunk::GetPPB_MouseInputEvent_1_1_Thunk(),
-    PPB_MOUSE_INPUT_EVENT_INTERFACE_1_1,
+    thunk::GetPPB_MouseInputEvent_Dev_Thunk(),
+    PPB_MOUSE_INPUT_EVENT_DEV_INTERFACE,
     INTERFACE_ID_NONE,
     false,
     &CreateInputEventProxy,