Move PPB_TrueTypeFont_Dev host from renderer to browser.

ppapi/proxy/truetype_font_resource.h

 // Copyright (c) 2013 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_PROXY_TRUETYPE_FONT_RESOURCE_H_
 #define PPAPI_PROXY_TRUETYPE_FONT_RESOURCE_H_
 
+#include <queue>
 #include <string>
 
 #include "ppapi/proxy/connection.h"
 #include "ppapi/proxy/plugin_resource.h"
 #include "ppapi/proxy/ppapi_proxy_export.h"
+#include "ppapi/proxy/serialized_structs.h"
 #include "ppapi/shared_impl/var.h"
 #include "ppapi/thunk/ppb_truetype_font_api.h"
 
 namespace ppapi {
 
 class TrackedCallback;
 
 namespace proxy {
 
 struct SerializedTrueTypeFontDesc;
 
 class PPAPI_PROXY_EXPORT TrueTypeFontResource
     : public PluginResource,
       public thunk::PPB_TrueTypeFont_API {
  public:
   TrueTypeFontResource(Connection connection,
                        PP_Instance instance,
                        const PP_TrueTypeFontDesc_Dev& desc);
   virtual ~TrueTypeFontResource();
 
-  // Resource overrides.
+  // Resource implementation.
   virtual thunk::PPB_TrueTypeFont_API* AsPPB_TrueTypeFont_API() OVERRIDE;
 
   // PPB_TrueTypeFont_API implementation.
   virtual int32_t Describe(
       PP_TrueTypeFontDesc_Dev* desc,
       scoped_refptr<TrackedCallback> callback) OVERRIDE;
   virtual int32_t GetTableTags(
       const PP_ArrayOutput& output,
       scoped_refptr<TrackedCallback> callback) OVERRIDE;
   virtual int32_t GetTable(
       uint32_t table,
       int32_t offset,
       int32_t max_data_length,
       const PP_ArrayOutput& output,
       scoped_refptr<TrackedCallback> callback) OVERRIDE;
 
+  // PluginResource implementation.
+  virtual void OnReplyReceived(const ResourceMessageReplyParams& params,
+                               const IPC::Message& msg) OVERRIDE;
+
  private:
-  void OnPluginMsgDescribeComplete(
-      scoped_refptr<TrackedCallback> callback,
-      PP_TrueTypeFontDesc_Dev* pp_desc,
+  // If the call to PepperTrueTypeFont::Create hasn't completed, we queue up
+  // messages to replay later.
+  struct FontOp {
+    enum Type { DESCRIBE, GET_TABLE_TAGS, GET_TABLE };
+
+    FontOp(PP_TrueTypeFontDesc_Dev* desc,
+           scoped_refptr<TrackedCallback> callback);
+    FontOp(const PP_ArrayOutput& output,
+           scoped_refptr<TrackedCallback> callback);
+    FontOp(uint32_t table,
+           int32_t offset,
+           int32_t max_data_length,
+           const PP_ArrayOutput& output,
+           scoped_refptr<TrackedCallback> callback);
+    ~FontOp();
+
+    Type type;
+    scoped_refptr<TrackedCallback> callback;
+
+    PP_TrueTypeFontDesc_Dev* desc;
+    PP_ArrayOutput output;
+    uint32_t table;
+    int32_t offset;
+    int32_t max_data_length;
+  };
+
+  void OnPluginMsgCreateComplete(
       const ResourceMessageReplyParams& params,
-      const ppapi::proxy::SerializedTrueTypeFontDesc& desc);
+      const ppapi::proxy::SerializedTrueTypeFontDesc& desc,
+      int32_t result);
   void OnPluginMsgGetTableTagsComplete(
       scoped_refptr<TrackedCallback> callback,
       PP_ArrayOutput array_output,
       const ResourceMessageReplyParams& params,
       const std::vector<uint32_t>& data);
   void OnPluginMsgGetTableComplete(
       scoped_refptr<TrackedCallback> callback,
       PP_ArrayOutput array_output,
       const ResourceMessageReplyParams& params,
       const std::string& data);
 
+  void RunFontOp(const FontOp& op);
+
+  int32_t create_result_;
+  // Valid only when create_result_ == PP_OK.
+  ppapi::proxy::SerializedTrueTypeFontDesc desc_;
+
+  // Queue font operations until creation has completed.
+  std::queue<FontOp> pending_font_ops_;
+
   DISALLOW_COPY_AND_ASSIGN(TrueTypeFontResource);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_TRUETYPE_FONT_RESOURCE_H_