Move PPB_TrueTypeFont_Dev host from renderer to browser.

content/browser/renderer_host/pepper/pepper_truetype_font_host.cc

Index: content/browser/renderer_host/pepper/pepper_truetype_font_host.cc
diff --git a/content/browser/renderer_host/pepper/pepper_truetype_font_host.cc b/content/browser/renderer_host/pepper/pepper_truetype_font_host.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b76267fd41bcadad580ec6d41f64f4173d73a68d
--- /dev/null
+++ b/content/browser/renderer_host/pepper/pepper_truetype_font_host.cc
@@ -0,0 +1,159 @@
+// 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.
+
+#include "content/browser/renderer_host/pepper/pepper_truetype_font_host.h"
+
+#include "base/bind.h"
+#include "base/task_runner_util.h"
+#include "base/threading/sequenced_worker_pool.h"
+#include "content/browser/renderer_host/pepper/pepper_truetype_font.h"
+#include "content/public/browser/browser_ppapi_host.h"
+#include "content/public/browser/browser_thread.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/host/dispatch_host_message.h"
+#include "ppapi/host/ppapi_host.h"
+#include "ppapi/proxy/ppapi_messages.h"
+
+using ppapi::host::HostMessageContext;
+using ppapi::host::ReplyMessageContext;
+using ppapi::proxy::SerializedTrueTypeFontDesc;
+
+namespace content {
+
+PepperTrueTypeFontHost::PepperTrueTypeFontHost(
+    BrowserPpapiHost* host,
+    PP_Instance instance,
+    PP_Resource resource,
+    const SerializedTrueTypeFontDesc& desc)
+    : ResourceHost(host->GetPpapiHost(), instance, resource),
+      initialize_completed_(false),
+      weak_factory_(this) {
+  font_ = PepperTrueTypeFont::Create();
+  // Initialize the font on a blocking pool thread. This must complete before
+  // using |font_|.
+  base::SequencedWorkerPool* pool = BrowserThread::GetBlockingPool();
+  task_runner_ = pool->GetSequencedTaskRunner(pool->GetSequenceToken());
+  SerializedTrueTypeFontDesc* actual_desc =
+      new SerializedTrueTypeFontDesc(desc);
+  base::PostTaskAndReplyWithResult(
+      task_runner_,
+      FROM_HERE,
+      base::Bind(&PepperTrueTypeFont::Initialize, font_, actual_desc),
+      base::Bind(&PepperTrueTypeFontHost::OnInitializeComplete,
+                 weak_factory_.GetWeakPtr(),
+                 base::Owned(actual_desc)));
+}
+
+PepperTrueTypeFontHost::~PepperTrueTypeFontHost() {
+  if (font_) {
+    // Release the font on the task runner in case the implementation requires
+    // long blocking operations.
+    font_->AddRef();
+    PepperTrueTypeFont* raw_font = font_.get();
+    font_ = NULL;
+    task_runner_->ReleaseSoon(FROM_HERE, raw_font);
+  }
+}
+
+int32_t PepperTrueTypeFontHost::OnResourceMessageReceived(
+    const IPC::Message& msg,
+    HostMessageContext* context) {
+  if (!host()->permissions().HasPermission(ppapi::PERMISSION_DEV))
+    return PP_ERROR_FAILED;
+
+  PPAPI_BEGIN_MESSAGE_MAP(PepperTrueTypeFontHost, msg)
+  PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(PpapiHostMsg_TrueTypeFont_GetTableTags,
+                                      OnHostMsgGetTableTags)
+  PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_TrueTypeFont_GetTable,
+                                    OnHostMsgGetTable)
+  PPAPI_END_MESSAGE_MAP()
+  return PP_ERROR_FAILED;
+}
+
+int32_t PepperTrueTypeFontHost::OnHostMsgGetTableTags(
+    HostMessageContext* context) {
+  if (!font_)
+    return PP_ERROR_FAILED;
+
+  // Get font data on a thread that allows slow blocking operations.
+  std::vector<uint32_t>* tags = new std::vector<uint32_t>();
+  base::PostTaskAndReplyWithResult(
+      task_runner_,
+      FROM_HERE,
+      base::Bind(&PepperTrueTypeFont::GetTableTags, font_, tags),
+      base::Bind(&PepperTrueTypeFontHost::OnGetTableTagsComplete,
+                 weak_factory_.GetWeakPtr(),
+                 base::Owned(tags),
+                 context->MakeReplyMessageContext()));
+
+  return PP_OK_COMPLETIONPENDING;
+}
+
+int32_t PepperTrueTypeFontHost::OnHostMsgGetTable(HostMessageContext* context,
+                                                  uint32_t table,
+                                                  int32_t offset,
+                                                  int32_t max_data_length) {
+  if (!font_)
+    return PP_ERROR_FAILED;
+  if (offset < 0 || max_data_length < 0)
+    return PP_ERROR_BADARGUMENT;
+
+  // Get font data on a thread that allows slow blocking operations.
+  std::string* data = new std::string();
+  base::PostTaskAndReplyWithResult(
+      task_runner_,
+      FROM_HERE,
+      base::Bind(&PepperTrueTypeFont::GetTable,
+                 font_,
+                 table,
+                 offset,
+                 max_data_length,
+                 data),
+      base::Bind(&PepperTrueTypeFontHost::OnGetTableComplete,
+                 weak_factory_.GetWeakPtr(),
+                 base::Owned(data),
+                 context->MakeReplyMessageContext()));
+
+  return PP_OK_COMPLETIONPENDING;
+}
+
+void PepperTrueTypeFontHost::OnInitializeComplete(
+    SerializedTrueTypeFontDesc* desc,
+    int32_t result) {
+  DCHECK(!initialize_completed_);
+  initialize_completed_ = true;
+  // Release the font if there was an error, so future calls will fail.
+  if (result != PP_OK)
+    font_ = NULL;
+  host()->SendUnsolicitedReply(
+      pp_resource(), PpapiPluginMsg_TrueTypeFont_CreateReply(*desc, result));
+}
+
+void PepperTrueTypeFontHost::OnGetTableTagsComplete(
+    std::vector<uint32_t>* tags,
+    ReplyMessageContext reply_context,
+    int32_t result) {
+  DCHECK(initialize_completed_);
+  // It's possible that Initialize failed and that |font_| is NULL. Check that
+  // the font implementation doesn't return PP_OK in that case.
+  DCHECK(font_ || result != PP_OK);
+  reply_context.params.set_result(result);
+  host()->SendReply(reply_context,
+                    PpapiPluginMsg_TrueTypeFont_GetTableTagsReply(*tags));
+}
+
+void PepperTrueTypeFontHost::OnGetTableComplete(
+    std::string* data,
+    ReplyMessageContext reply_context,
+    int32_t result) {
+  DCHECK(initialize_completed_);
+  // It's possible that Initialize failed and that |font_| is NULL. Check that
+  // the font implementation doesn't return PP_OK in that case.
+  DCHECK(font_ || result != PP_OK);
+  reply_context.params.set_result(result);
+  host()->SendReply(reply_context,
+                    PpapiPluginMsg_TrueTypeFont_GetTableReply(*data));
+}
+
+}  // namespace content