Implement the host side of the PPB_PDF proxy.

ppapi/proxy/ppapi_messages.h

Index: ppapi/proxy/ppapi_messages.h
diff --git a/ppapi/proxy/ppapi_messages.h b/ppapi/proxy/ppapi_messages.h
index eb921d918c2d9f8550ee230b5f81c5db6572c668..a939de89db1c726c680f1bc2e15171c9f09de8f4 100644
--- a/ppapi/proxy/ppapi_messages.h
+++ b/ppapi/proxy/ppapi_messages.h
@@ -1120,21 +1120,6 @@ IPC_MESSAGE_CONTROL1(PpapiHostMsg_PPBNetworkMonitor_Start,
 IPC_MESSAGE_CONTROL1(PpapiHostMsg_PPBNetworkMonitor_Stop,
                      uint32 /* plugin_dispatcher_id */)
 
-#if !defined(OS_NACL) && !defined(NACL_WIN64)
-// PPB_PDF
-IPC_SYNC_MESSAGE_ROUTED3_1(
-    PpapiHostMsg_PPBPDF_GetFontFileWithFallback,
-    PP_Instance /* instance */,
-    ppapi::proxy::SerializedFontDescription /* description */,
-    int32_t /* charset */,
-    ppapi::HostResource /* result */)
-IPC_SYNC_MESSAGE_ROUTED2_1(
-    PpapiHostMsg_PPBPDF_GetFontTableForPrivateFontFile,
-    ppapi::HostResource /* font_file */,
-    uint32_t /* table */,
-    std::string /* result */)
-#endif  // !defined(OS_NACL) && !defined(NACL_WIN64)
-
 // PPB_Testing.
 IPC_SYNC_MESSAGE_ROUTED3_1(
     PpapiHostMsg_PPBTesting_ReadImageData,
@@ -1777,10 +1762,13 @@ IPC_MESSAGE_CONTROL2(PpapiHostMsg_PDF_GetResourceImage,
 // Reply for PpapiHostMsg_PDF_GetResourceImage containing the host resource id
 // of the image and a string (representing a PP_ImageDataDesc) containing the
 // properties of the image. Also carries a shared memory handle pointing to the
-// memory containg the image.
-IPC_MESSAGE_CONTROL2(PpapiPluginMsg_PDF_GetResourceImageReply,
+// memory containg the image. On linux, the handle is transmitted in this
+// message as |fd|. This is due to the unfortunate way that ImageHandles are

[yzshen1, 2013/04/03 18:32:39]

Does it make sense to have a TODO to make SerializedHandle also works with
ImageHandle?

[raymes, 2013/04/03 23:18:21]

Done. I put it in serialized_structs.h

+// defined for use with PPB_ImageData.
+IPC_MESSAGE_CONTROL3(PpapiPluginMsg_PDF_GetResourceImageReply,
                      ppapi::HostResource /* resource_id */,
-                     std::string /* image_data_desc */)
+                     std::string /* image_data_desc */,
+                     int /* fd */)
 
 // VideoCapture_Dev, plugin -> host
 IPC_MESSAGE_CONTROL0(PpapiHostMsg_VideoCapture_Create)