Improve linearized pdf load/show time.

pdf/out_of_process_instance.cc

 // Copyright (c) 2012 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 "pdf/out_of_process_instance.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>  // for min/max()
@@ skipping 830 matching lines @@
 void OutOfProcessInstance::DidOpen(int32_t result) {
   if (result == PP_OK) {
     if (!engine_->HandleDocumentLoad(embed_loader_)) {
       document_load_state_ = LOAD_STATE_LOADING;
       DocumentLoadFailed();
     }
   } else if (result != PP_ERROR_ABORTED) {  // Can happen in tests.
     NOTREACHED();
     DocumentLoadFailed();
   }
-
-  // If it's a progressive load, cancel the stream URL request so that requests
-  // can be made on the original URL.
-  // TODO(raymes): Make this clearer once the in-process plugin is deleted.
-  if (engine_->IsProgressiveLoad()) {
-    pp::VarDictionary message;
-    message.Set(kType, kJSCancelStreamUrlType);
-    PostMessage(message);
-  }
 }
 
 void OutOfProcessInstance::DidOpenPreview(int32_t result) {
   if (result == PP_OK) {
     preview_client_.reset(new PreviewModeClient(this));
     preview_engine_.reset(PDFEngine::Create(preview_client_.get()));
     preview_engine_->HandleDocumentLoad(embed_preview_loader_);
   } else {
     NOTREACHED();
   }
@@ skipping 601 matching lines @@
 }
 
 bool OutOfProcessInstance::IsPrintPreview() {
   return IsPrintPreviewUrl(url_);
 }
 
 uint32_t OutOfProcessInstance::GetBackgroundColor() {
   return background_color_;
 }
 
+void OutOfProcessInstance::CancelBrowserDownload() {
+  pp::VarDictionary message;
+  message.Set(kType, kJSCancelStreamUrlType);
+  PostMessage(message);
+}
+
 void OutOfProcessInstance::IsSelectingChanged(bool is_selecting) {
   pp::VarDictionary message;
   message.Set(kType, kJSSetIsSelectingType);
   message.Set(kJSIsSelecting, pp::Var(is_selecting));
   PostMessage(message);
 }
 
 void OutOfProcessInstance::ProcessPreviewPageInfo(const std::string& url,
                                                   int dst_page_index) {
   if (!IsPrintPreview())
@@ skipping 36 matching lines @@
     const pp::FloatPoint& scroll_offset) {
   float max_x = document_size_.width() * zoom_ - plugin_dip_size_.width();
   float x = std::max(std::min(scroll_offset.x(), max_x), 0.0f);
   float min_y = -top_toolbar_height_;
   float max_y = document_size_.height() * zoom_ - plugin_dip_size_.height();
   float y = std::max(std::min(scroll_offset.y(), max_y), min_y);
   return pp::FloatPoint(x, y);
 }
 
 }  // namespace chrome_pdf