Remove PluginLoadObserver and related logic, it was only used for NPAPI.

content/child/plugin_messages.h

Index: content/child/plugin_messages.h
diff --git a/content/child/plugin_messages.h b/content/child/plugin_messages.h
index 25d4545f683a7411865d360a38eca5f0b233ddf9..f742338a0caaf950bbd3b392876b491abb1666f0 100644
--- a/content/child/plugin_messages.h
+++ b/content/child/plugin_messages.h
@@ -34,16 +34,6 @@ IPC_STRUCT_BEGIN(PluginMsg_Init_Params)
   IPC_STRUCT_MEMBER(int, host_render_view_routing_id)
 IPC_STRUCT_END()
 
-IPC_STRUCT_BEGIN(PluginHostMsg_URLRequest_Params)
-  IPC_STRUCT_MEMBER(std::string, url)
-  IPC_STRUCT_MEMBER(std::string, method)
-  IPC_STRUCT_MEMBER(std::string, target)
-  IPC_STRUCT_MEMBER(std::vector<char>, buffer)
-  IPC_STRUCT_MEMBER(int, notify_id)
-  IPC_STRUCT_MEMBER(bool, popups_allowed)
-  IPC_STRUCT_MEMBER(bool, notify_redirects)
-IPC_STRUCT_END()
-
 IPC_STRUCT_BEGIN(PluginMsg_DidReceiveResponseParams)
   IPC_STRUCT_MEMBER(unsigned long, id)
   IPC_STRUCT_MEMBER(std::string, mime_type)
@@ -55,7 +45,6 @@ IPC_STRUCT_END()
 
 IPC_STRUCT_BEGIN(PluginMsg_FetchURL_Params)
   IPC_STRUCT_MEMBER(unsigned long, resource_id)
-  IPC_STRUCT_MEMBER(int, notify_id)
   IPC_STRUCT_MEMBER(GURL, url)
   IPC_STRUCT_MEMBER(GURL, first_party_for_cookies)
   IPC_STRUCT_MEMBER(std::string, method)
@@ -116,11 +105,6 @@ IPC_SYNC_MESSAGE_ROUTED0_2(PluginMsg_GetFormValue,
                            base::string16 /* value */,
                            bool /* success */)
 
-IPC_MESSAGE_ROUTED3(PluginMsg_DidFinishLoadWithReason,
-                    GURL /* url */,
-                    int /* reason */,
-                    int /* notify_id */)
-
 // Updates the plugin location.
 IPC_MESSAGE_ROUTED1(PluginMsg_UpdateGeometry,
                     PluginMsg_UpdateGeometry_Param)
@@ -159,44 +143,12 @@ IPC_MESSAGE_ROUTED1(PluginMsg_DidFinishLoading,
 IPC_MESSAGE_ROUTED1(PluginMsg_DidFail,
                     unsigned long /* id */)
 
-IPC_MESSAGE_ROUTED4(PluginMsg_SendJavaScriptStream,
-                    GURL /* url */,
-                    std::string /* result */,
-                    bool /* success */,
-                    int /* notify_id */)
-
-IPC_MESSAGE_ROUTED2(PluginMsg_DidReceiveManualResponse,
-                    GURL /* url */,
-                    PluginMsg_DidReceiveResponseParams)
-
-IPC_MESSAGE_ROUTED1(PluginMsg_DidReceiveManualData,
-                    std::vector<char> /* buffer */)
-
-IPC_MESSAGE_ROUTED0(PluginMsg_DidFinishManualLoading)
-
-IPC_MESSAGE_ROUTED0(PluginMsg_DidManualLoadFail)
-
-IPC_MESSAGE_ROUTED3(PluginMsg_HandleURLRequestReply,
-                    unsigned long /* resource_id */,
-                    GURL /* url */,
-                    int /* notify_id */)
-
-IPC_MESSAGE_ROUTED2(PluginMsg_HTTPRangeRequestReply,
-                    unsigned long /* resource_id */,
-                    int /* range_request_id */)
-
 IPC_MESSAGE_CONTROL1(PluginMsg_SignalModalDialogEvent,
                      int /* render_view_id */)
 
 IPC_MESSAGE_CONTROL1(PluginMsg_ResetModalDialogEvent,
                      int /* render_view_id */)
 
-IPC_MESSAGE_ROUTED1(PluginMsg_FetchURL,
-                    PluginMsg_FetchURL_Params)
-
-IPC_MESSAGE_CONTROL1(PluginHostMsg_DidAbortLoading,
-                     int /* render_view_id */)
-
 #if defined(OS_WIN)
 IPC_MESSAGE_ROUTED4(PluginMsg_ImeCompositionUpdated,
                     base::string16 /* text */,
@@ -237,9 +189,6 @@ IPC_MESSAGE_ROUTED1(PluginMsg_ImeCompositionCompleted,
 IPC_SYNC_MESSAGE_ROUTED1_0(PluginHostMsg_SetWindow,
                            gfx::PluginWindowHandle /* window */)
 
-IPC_MESSAGE_ROUTED1(PluginHostMsg_URLRequest,
-                    PluginHostMsg_URLRequest_Params)
-
 IPC_MESSAGE_ROUTED1(PluginHostMsg_CancelResource,
                     int /* id */)
 
@@ -271,11 +220,6 @@ IPC_SYNC_MESSAGE_ROUTED2_1(PluginHostMsg_GetCookies,
 
 IPC_MESSAGE_ROUTED0(PluginHostMsg_CancelDocumentLoad)
 
-IPC_MESSAGE_ROUTED3(PluginHostMsg_InitiateHTTPRangeRequest,
-                    std::string /* url */,
-                    std::string /* range_info */,
-                    int         /* range_request_id */)
-
 IPC_MESSAGE_ROUTED0(PluginHostMsg_DidStartLoading)
 IPC_MESSAGE_ROUTED0(PluginHostMsg_DidStopLoading)