Reland http://codereview.chromium.org/7452002/, update chromoting

ppapi/shared_impl/ppp_instance_combined.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PPAPI_SHARED_IMPL_PPP_INSTANCE_COMBINED_H_
 #define PPAPI_SHARED_IMPL_PPP_INSTANCE_COMBINED_H_
 
 #include "base/basictypes.h"
 #include "ppapi/c/ppp_instance.h"
 
+// TODO(dmichael): This is here only for temporary backwards compatibility so
+// that NaCl and other plugins aren't broken while the change propagates. This
+// needs to be deleted in 14, because we don't intend to support PPP_Instance.
+// HandleInputEvent.
+// --- Begin backwards compatibility code.
+union PP_InputEventData {
+  struct PP_InputEvent_Key key;
+  struct PP_InputEvent_Character character;
+  struct PP_InputEvent_Mouse mouse;
+  struct PP_InputEvent_Wheel wheel;
+  char padding[64];
+};
+struct PP_InputEvent {
+  PP_InputEvent_Type type;
+  int32_t padding;
+  PP_TimeTicks time_stamp;
+  union PP_InputEventData u;
+};
+PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_InputEvent, 80);
+
+#define PPP_INSTANCE_INTERFACE_0_5 "PPP_Instance;0.5"
+
+struct PPP_Instance_0_5 {
+  PP_Bool (*DidCreate)(PP_Instance instance,
+                       uint32_t argc,
+                       const char* argn[],
+                       const char* argv[]);
+  void (*DidDestroy)(PP_Instance instance);
+  void (*DidChangeView)(PP_Instance instance,
+                        const struct PP_Rect* position,
+                        const struct PP_Rect* clip);
+  void (*DidChangeFocus)(PP_Instance instance, PP_Bool has_focus);
+  PP_Bool (*HandleInputEvent)(PP_Instance instance,
+                              const struct PP_InputEvent* event);
+  PP_Bool (*HandleDocumentLoad)(PP_Instance instance, PP_Resource url_loader);
+};
+// --- End backwards compatibility code.
 namespace ppapi {
 
-struct PPP_Instance_Combined : public PPP_Instance_0_5 {
+struct PPP_Instance_Combined : public PPP_Instance_1_0 {
  public:
+  explicit PPP_Instance_Combined(const PPP_Instance_1_0& instance_if);
   explicit PPP_Instance_Combined(const PPP_Instance_0_5& instance_if);
+  PP_Bool (*HandleInputEvent_0_5)(PP_Instance instance,
+                                 const struct PP_InputEvent* event);
 
   DISALLOW_COPY_AND_ASSIGN(PPP_Instance_Combined);
 };
 
 }  // namespace ppapi
 
 #endif  // PPAPI_SHARED_IMPL_PPP_INSTANCE_COMBINED_H_