Add the pdf plugin's source in src\pdf.

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 <algorithm>  // for min/max()
+#define _USE_MATH_DEFINES  // for M_PI
+#include <cmath>      // for log() and pow()
+#include <math.h>
+#include <list>
+
+#include "base/json/json_reader.h"
+#include "base/json/json_writer.h"
+#include "base/logging.h"
+#include "base/strings/string_number_conversions.h"
+#include "base/strings/string_split.h"
+#include "base/strings/string_util.h"
+#include "base/values.h"
+#include "chrome/common/content_restriction.h"
+#include "net/base/escape.h"
+#include "pdf/draw_utils.h"
+#include "pdf/pdf.h"
+#include "ppapi/c/dev/ppb_cursor_control_dev.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/c/pp_rect.h"
+#include "ppapi/c/private/ppp_pdf.h"
+#include "ppapi/c/trusted/ppb_url_loader_trusted.h"
+#include "ppapi/cpp/core.h"
+#include "ppapi/cpp/dev/memory_dev.h"
+#include "ppapi/cpp/dev/text_input_dev.h"
+#include "ppapi/cpp/dev/url_util_dev.h"
+#include "ppapi/cpp/module.h"
+#include "ppapi/cpp/point.h"
+#include "ppapi/cpp/private/pdf.h"
+#include "ppapi/cpp/rect.h"
+#include "ppapi/cpp/resource.h"
+#include "ppapi/cpp/url_request_info.h"
+#include "ppapi/cpp/var_array.h"
+#include "ppapi/cpp/var_dictionary.h"
+#include "ui/events/keycodes/keyboard_codes.h"
+
+#if defined(OS_MACOSX)
+#include "base/mac/mac_util.h"
+#endif
+
+namespace chrome_pdf {
+
+// URL reference parameters.
+// For more possible parameters, see RFC 3778 and the "PDF Open Parameters"
+// document from Adobe.
+const char kDelimiters[] = "#&";
+const char kNamedDest[] = "nameddest";
+const char kPage[] = "page";
+
+const char kChromePrint[] = "chrome://print/";
+const char kChromeExtension[] =
+    "chrome-extension://mhjfbmdgcfjbbpaeojofohoefgiehjai";
+
+// Dictionary Value key names for the document accessibility info
+const char kAccessibleNumberOfPages[] = "numberOfPages";
+const char kAccessibleLoaded[] = "loaded";
+const char kAccessibleCopyable[] = "copyable";
+
+// Constants used in handling postMessage() messages.
+const char* kType = "type";
+// Viewport message arguments. (Page -> Plugin).
+const char* kJSViewportType = "viewport";
+const char* kJSXOffset = "xOffset";
+const char* kJSYOffset = "yOffset";
+const char* kJSZoom = "zoom";
+// Document dimension arguments (Plugin -> Page).
+const char* kJSDocumentDimensionsType = "documentDimensions";
+const char* kJSDocumentWidth = "width";
+const char* kJSDocumentHeight = "height";
+const char* kJSPageDimensions = "pageDimensions";
+const char* kJSPageX = "x";
+const char* kJSPageY = "y";
+const char* kJSPageWidth = "width";
+const char* kJSPageHeight = "height";
+// Document load progress arguments (Plugin -> Page)
+const char* kJSLoadProgressType = "loadProgress";
+const char* kJSProgressPercentage = "progress";
+// Get password arguments (Plugin -> Page)
+const char* kJSGetPasswordType = "getPassword";
+// Get password complete arguments (Page -> Plugin)
+const char* kJSGetPasswordCompleteType = "getPasswordComplete";
+const char* kJSPassword = "password";
+// Print (Page -> Plugin)
+const char* kJSPrintType = "print";
+// Go to page (Plugin -> Page)
+const char* kJSGoToPageType = "goToPage";
+const char* kJSPageNumber = "page";
+// Reset print preview mode (Page -> Plugin)
+const char* kJSResetPrintPreviewModeType = "resetPrintPreviewMode";
+const char* kJSPrintPreviewUrl = "url";
+const char* kJSPrintPreviewGrayscale = "grayscale";
+const char* kJSPrintPreviewPageCount = "pageCount";
+// Load preview page (Page -> Plugin)
+const char* kJSLoadPreviewPageType = "loadPreviewPage";
+const char* kJSPreviewPageUrl = "url";
+const char* kJSPreviewPageIndex = "index";
+// Set scroll position (Plugin -> Page)
+const char* kJSSetScrollPositionType = "setScrollPosition";
+const char* kJSPositionX = "x";
+const char* kJSPositionY = "y";
+// Set translated strings (Plugin -> Page)
+const char* kJSSetTranslatedStringsType = "setTranslatedStrings";
+const char* kJSGetPasswordString = "getPasswordString";
+const char* kJSLoadingString = "loadingString";
+const char* kJSLoadFailedString = "loadFailedString";
+// Request accessibility JSON data (Page -> Plugin)
+const char* kJSGetAccessibilityJSONType = "getAccessibilityJSON";
+const char* kJSAccessibilityPageNumber = "page";
+// Reply with accessibility JSON data (Plugin -> Page)
+const char* kJSGetAccessibilityJSONReplyType = "getAccessibilityJSONReply";
+const char* kJSAccessibilityJSON = "json";
+// Cancel the stream URL request (Plugin -> Page)
+const char* kJSCancelStreamUrlType = "cancelStreamUrl";
+
+const int kFindResultCooldownMs = 100;
+
+const double kMinZoom = 0.01;
+
+namespace {
+
+static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;
+
+PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) {
+  pp::Var var;
+  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
+  if (object) {
+    var = static_cast<OutOfProcessInstance*>(object)->GetLinkAtPosition(
+        pp::Point(point));
+  }
+  return var.Detach();
+}
+
+void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
+  void* object =
+      pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
+  if (object) {
+    OutOfProcessInstance* obj_instance =
+        static_cast<OutOfProcessInstance*>(object);
+    switch (type) {
+      case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW:
+        obj_instance->RotateClockwise();
+        break;
+      case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW:
+        obj_instance->RotateCounterclockwise();
+        break;
+    }
+  }
+}
+
+const PPP_Pdf ppp_private = {
+  &GetLinkAtPosition,
+  &Transform
+};
+
+int ExtractPrintPreviewPageIndex(const std::string& src_url) {
+  // Sample |src_url| format: chrome://print/id/page_index/print.pdf
+  std::vector<std::string> url_substr;
+  base::SplitString(src_url.substr(strlen(kChromePrint)), '/', &url_substr);
+  if (url_substr.size() != 3)
+    return -1;
+
+  if (url_substr[2] != "print.pdf")
+    return -1;
+
+  int page_index = 0;
+  if (!base::StringToInt(url_substr[1], &page_index))
+    return -1;
+  return page_index;
+}
+
+bool IsPrintPreviewUrl(const std::string& url) {
+  return url.substr(0, strlen(kChromePrint)) == kChromePrint;
+}
+
+void ScalePoint(float scale, pp::Point* point) {
+  point->set_x(static_cast<int>(point->x() * scale));
+  point->set_y(static_cast<int>(point->y() * scale));
+}
+
+void ScaleRect(float scale, pp::Rect* rect) {
+  int left = static_cast<int>(floorf(rect->x() * scale));
+  int top = static_cast<int>(floorf(rect->y() * scale));
+  int right = static_cast<int>(ceilf((rect->x() + rect->width()) * scale));
+  int bottom = static_cast<int>(ceilf((rect->y() + rect->height()) * scale));
+  rect->SetRect(left, top, right - left, bottom - top);
+}
+
+}  // namespace
+
+OutOfProcessInstance::OutOfProcessInstance(PP_Instance instance)
+    : pp::InstancePrivate(instance),
+      pp::Find_Private(this),
+      pp::Printing_Dev(this),
+      pp::Selection_Dev(this),
+      cursor_(PP_CURSORTYPE_POINTER),
+      zoom_(1.0),
+      device_scale_(1.0),
+      printing_enabled_(true),
+      full_(false),
+      paint_manager_(this, this, true),
+      first_paint_(true),
+      document_load_state_(LOAD_STATE_LOADING),
+      preview_document_load_state_(LOAD_STATE_COMPLETE),
+      uma_(this),
+      told_browser_about_unsupported_feature_(false),
+      print_preview_page_count_(0),
+      last_progress_sent_(0),
+      recently_sent_find_update_(false),
+      received_viewport_message_(false) {
+  loader_factory_.Initialize(this);
+  timer_factory_.Initialize(this);
+  form_factory_.Initialize(this);
+  print_callback_factory_.Initialize(this);
+  engine_.reset(PDFEngine::Create(this));
+  pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private);
+  AddPerInstanceObject(kPPPPdfInterface, this);
+
+  RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
+  RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD);
+  RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH);
+}
+
+OutOfProcessInstance::~OutOfProcessInstance() {
+  RemovePerInstanceObject(kPPPPdfInterface, this);
+}
+
+bool OutOfProcessInstance::Init(uint32_t argc,
+                                const char* argn[],
+                                const char* argv[]) {
+  // Check if the PDF is being loaded in the PDF chrome extension. We only allow
+  // the plugin to be put into "full frame" mode when it is being loaded in the
+  // extension because this enables some features that we don't want pages
+  // abusing outside of the extension.
+  pp::Var document_url_var = pp::URLUtil_Dev::Get()->GetDocumentURL(this);
+  std::string document_url = document_url_var.is_string() ?
+      document_url_var.AsString() : std::string();
+  std::string extension_url = std::string(kChromeExtension);
+  bool in_extension =
+      !document_url.compare(0, extension_url.size(), extension_url);
+
+  if (in_extension) {
+    // Check if the plugin is full frame. This is passed in from JS.
+    for (uint32_t i = 0; i < argc; ++i) {
+      if (strcmp(argn[i], "full-frame") == 0) {
+        full_ = true;
+        break;
+      }
+    }
+  }
+
+  // Only allow the plugin to handle find requests if it is full frame.
+  if (full_)
+    SetPluginToHandleFindRequests();
+
+  // Send translated strings to the extension where they will be displayed.
+  // TODO(raymes): It would be better to get these in the extension directly
+  // through an API but no such API currently exists.
+  pp::VarDictionary translated_strings;
+  translated_strings.Set(kType, kJSSetTranslatedStringsType);
+  translated_strings.Set(kJSGetPasswordString,
+      GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD));
+  translated_strings.Set(kJSLoadingString,
+      GetLocalizedString(PP_RESOURCESTRING_PDFLOADING));
+  translated_strings.Set(kJSLoadFailedString,
+      GetLocalizedString(PP_RESOURCESTRING_PDFLOAD_FAILED));
+  PostMessage(translated_strings);
+
+  text_input_.reset(new pp::TextInput_Dev(this));
+
+  const char* stream_url = NULL;
+  const char* original_url = NULL;
+  const char* headers = NULL;
+  for (uint32_t i = 0; i < argc; ++i) {
+    if (strcmp(argn[i], "src") == 0)
+      original_url = argv[i];
+    else if (strcmp(argn[i], "stream-url") == 0)
+      stream_url = argv[i];
+    else if (strcmp(argn[i], "headers") == 0)
+      headers = argv[i];
+  }
+
+  if (!original_url)
+    return false;
+
+  if (!stream_url)
+    stream_url = original_url;
+
+  // If we're in print preview mode we don't need to load the document yet.
+  // A |kJSResetPrintPreviewModeType| message will be sent to the plugin letting
+  // it know the url to load. By not loading here we avoid loading the same
+  // document twice.
+  if (IsPrintPreviewUrl(original_url))
+    return true;
+
+  LoadUrl(stream_url);
+  url_ = original_url;
+  return engine_->New(original_url, headers);
+}
+
+void OutOfProcessInstance::HandleMessage(const pp::Var& message) {
+  pp::VarDictionary dict(message);
+  if (!dict.Get(kType).is_string()) {
+    NOTREACHED();
+    return;
+  }
+
+  std::string type = dict.Get(kType).AsString();
+
+  if (type == kJSViewportType &&
+      dict.Get(pp::Var(kJSXOffset)).is_int() &&
+      dict.Get(pp::Var(kJSYOffset)).is_int() &&
+      dict.Get(pp::Var(kJSZoom)).is_number()) {
+    received_viewport_message_ = true;
+    double zoom = dict.Get(pp::Var(kJSZoom)).AsDouble();
+    int x = dict.Get(pp::Var(kJSXOffset)).AsInt();
+    int y = dict.Get(pp::Var(kJSYOffset)).AsInt();
+
+    // Bound the input parameters.
+    zoom = std::max(kMinZoom, zoom);
+    int max_x = document_size_.width() * zoom - plugin_dip_size_.width();
+    x = std::max(std::min(x, max_x), 0);
+    int max_y = document_size_.height() * zoom - plugin_dip_size_.height();
+    y = std::max(std::min(y, max_y), 0);
+
+    SetZoom(zoom);
+    engine_->ScrolledToXPosition(x * device_scale_);
+    engine_->ScrolledToYPosition(y * device_scale_);
+  } else if (type == kJSGetPasswordCompleteType &&
+             dict.Get(pp::Var(kJSPassword)).is_string()) {
+    if (password_callback_) {
+      pp::CompletionCallbackWithOutput<pp::Var> callback = *password_callback_;
+      password_callback_.reset();
+      *callback.output() = dict.Get(pp::Var(kJSPassword)).pp_var();
+      callback.Run(PP_OK);
+    } else {
+      NOTREACHED();
+    }
+  } else if (type == kJSPrintType) {
+    Print();
+  } else if (type == kJSResetPrintPreviewModeType &&
+             dict.Get(pp::Var(kJSPrintPreviewUrl)).is_string() &&
+             dict.Get(pp::Var(kJSPrintPreviewGrayscale)).is_bool() &&
+             dict.Get(pp::Var(kJSPrintPreviewPageCount)).is_int()) {
+    url_ = dict.Get(pp::Var(kJSPrintPreviewUrl)).AsString();
+    preview_pages_info_ = std::queue<PreviewPageInfo>();
+    preview_document_load_state_ = LOAD_STATE_COMPLETE;
+    document_load_state_ = LOAD_STATE_LOADING;
+    LoadUrl(url_);
+    preview_engine_.reset();
+    engine_.reset(PDFEngine::Create(this));
+    engine_->SetGrayscale(dict.Get(pp::Var(kJSPrintPreviewGrayscale)).AsBool());
+    engine_->New(url_.c_str());
+
+    print_preview_page_count_ =
+        std::max(dict.Get(pp::Var(kJSPrintPreviewPageCount)).AsInt(), 0);
+
+    paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
+  } else if (type == kJSLoadPreviewPageType &&
+             dict.Get(pp::Var(kJSPreviewPageUrl)).is_string() &&
+             dict.Get(pp::Var(kJSPreviewPageIndex)).is_int()) {
+    ProcessPreviewPageInfo(dict.Get(pp::Var(kJSPreviewPageUrl)).AsString(),
+                           dict.Get(pp::Var(kJSPreviewPageIndex)).AsInt());
+  } else if (type == kJSGetAccessibilityJSONType) {
+    pp::VarDictionary reply;
+    reply.Set(pp::Var(kType), pp::Var(kJSGetAccessibilityJSONReplyType));
+    if (dict.Get(pp::Var(kJSAccessibilityPageNumber)).is_int()) {
+      int page = pp::Var(kJSAccessibilityPageNumber).AsInt();
+      reply.Set(pp::Var(kJSAccessibilityJSON),
+                        pp::Var(engine_->GetPageAsJSON(page)));
+    } else {
+      base::DictionaryValue node;
+      node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages());
+      node.SetBoolean(kAccessibleLoaded,
+                      document_load_state_ != LOAD_STATE_LOADING);
+      bool has_permissions =
+          engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
+          engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE);
+      node.SetBoolean(kAccessibleCopyable, has_permissions);
+      std::string json;
+      base::JSONWriter::Write(&node, &json);
+      reply.Set(pp::Var(kJSAccessibilityJSON), pp::Var(json));
+    }
+    PostMessage(reply);
+  } else {
+    NOTREACHED();
+  }
+}
+
+bool OutOfProcessInstance::HandleInputEvent(
+    const pp::InputEvent& event) {
+  // To simplify things, convert the event into device coordinates if it is
+  // a mouse event.
+  pp::InputEvent event_device_res(event);
+  {
+    pp::MouseInputEvent mouse_event(event);
+    if (!mouse_event.is_null()) {
+      pp::Point point = mouse_event.GetPosition();
+      pp::Point movement = mouse_event.GetMovement();
+      ScalePoint(device_scale_, &point);
+      ScalePoint(device_scale_, &movement);
+      mouse_event = pp::MouseInputEvent(
+          this,
+          event.GetType(),
+          event.GetTimeStamp(),
+          event.GetModifiers(),
+          mouse_event.GetButton(),
+          point,
+          mouse_event.GetClickCount(),
+          movement);
+      event_device_res = mouse_event;
+    }
+  }
+
+  pp::InputEvent offset_event(event_device_res);
+  switch (offset_event.GetType()) {
+    case PP_INPUTEVENT_TYPE_MOUSEDOWN:
+    case PP_INPUTEVENT_TYPE_MOUSEUP:
+    case PP_INPUTEVENT_TYPE_MOUSEMOVE:
+    case PP_INPUTEVENT_TYPE_MOUSEENTER:
+    case PP_INPUTEVENT_TYPE_MOUSELEAVE: {
+      pp::MouseInputEvent mouse_event(event_device_res);
+      pp::MouseInputEvent mouse_event_dip(event);
+      pp::Point point = mouse_event.GetPosition();
+      point.set_x(point.x() - available_area_.x());
+      offset_event = pp::MouseInputEvent(
+          this,
+          event.GetType(),
+          event.GetTimeStamp(),
+          event.GetModifiers(),
+          mouse_event.GetButton(),
+          point,
+          mouse_event.GetClickCount(),
+          mouse_event.GetMovement());
+      break;
+    }
+    default:
+      break;
+  }
+  if (engine_->HandleEvent(offset_event))
+    return true;
+
+  // TODO(raymes): Implement this scroll behavior in JS:
+  // When click+dragging, scroll the document correctly.
+
+  if (event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN &&
+      event.GetModifiers() & kDefaultKeyModifier) {
+    pp::KeyboardInputEvent keyboard_event(event);
+    switch (keyboard_event.GetKeyCode()) {
+      case 'A':
+        engine_->SelectAll();
+        return true;
+    }
+  }
+
+  // Return true for unhandled clicks so the plugin takes focus.
+  return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
+}
+
+void OutOfProcessInstance::DidChangeView(const pp::View& view) {
+  pp::Rect view_rect(view.GetRect());
+  float old_device_scale = device_scale_;
+  float device_scale = view.GetDeviceScale();
+  pp::Size view_device_size(view_rect.width() * device_scale,
+                            view_rect.height() * device_scale);
+
+  if (view_device_size == plugin_size_ && device_scale == device_scale_)
+    return; // We don't care about the position, only the size.
+
+  device_scale_ = device_scale;
+  plugin_dip_size_ = view_rect.size();
+  plugin_size_ = view_device_size;
+
+  paint_manager_.SetSize(view_device_size, device_scale_);
+
+  pp::Size new_image_data_size = PaintManager::GetNewContextSize(
+      image_data_.size(),
+      plugin_size_);
+  if (new_image_data_size != image_data_.size()) {
+    image_data_ = pp::ImageData(this,
+                                PP_IMAGEDATAFORMAT_BGRA_PREMUL,
+                                new_image_data_size,
+                                false);
+    first_paint_ = true;
+  }
+
+  if (image_data_.is_null()) {
+    DCHECK(plugin_size_.IsEmpty());
+    return;
+  }
+
+  OnGeometryChanged(zoom_, old_device_scale);
+}
+
+pp::Var OutOfProcessInstance::GetInstanceObject() {
+  return pp::Var();
+}
+
+pp::Var OutOfProcessInstance::GetLinkAtPosition(
+    const pp::Point& point) {
+  pp::Point offset_point(point);
+  ScalePoint(device_scale_, &offset_point);
+  offset_point.set_x(offset_point.x() - available_area_.x());
+  return engine_->GetLinkAtPosition(offset_point);
+}
+
+pp::Var OutOfProcessInstance::GetSelectedText(bool html) {
+  if (html || !engine_->HasPermission(PDFEngine::PERMISSION_COPY))
+    return pp::Var();
+  return engine_->GetSelectedText();
+}
+
+uint32_t OutOfProcessInstance::QuerySupportedPrintOutputFormats() {
+  return engine_->QuerySupportedPrintOutputFormats();
+}
+
+int32_t OutOfProcessInstance::PrintBegin(
+    const PP_PrintSettings_Dev& print_settings) {
+  // For us num_pages is always equal to the number of pages in the PDF
+  // document irrespective of the printable area.
+  int32_t ret = engine_->GetNumberOfPages();
+  if (!ret)
+    return 0;
+
+  uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
+  if ((print_settings.format & supported_formats) == 0)
+    return 0;
+
+  print_settings_.is_printing = true;
+  print_settings_.pepper_print_settings = print_settings;
+  engine_->PrintBegin();
+  return ret;
+}
+
+pp::Resource OutOfProcessInstance::PrintPages(
+    const PP_PrintPageNumberRange_Dev* page_ranges,
+    uint32_t page_range_count) {
+  if (!print_settings_.is_printing)
+    return pp::Resource();
+
+  print_settings_.print_pages_called_ = true;
+  return engine_->PrintPages(page_ranges, page_range_count,
+                             print_settings_.pepper_print_settings);
+}
+
+void OutOfProcessInstance::PrintEnd() {
+  if (print_settings_.print_pages_called_)
+    UserMetricsRecordAction("PDF.PrintPage");
+  print_settings_.Clear();
+  engine_->PrintEnd();
+}
+
+bool OutOfProcessInstance::IsPrintScalingDisabled() {
+  return !engine_->GetPrintScaling();
+}
+
+bool OutOfProcessInstance::StartFind(const std::string& text,
+                                                 bool case_sensitive) {
+  engine_->StartFind(text.c_str(), case_sensitive);
+  return true;
+}
+
+void OutOfProcessInstance::SelectFindResult(bool forward) {
+  engine_->SelectFindResult(forward);
+}
+
+void OutOfProcessInstance::StopFind() {
+  engine_->StopFind();
+  tickmarks_.clear();
+  SetTickmarks(tickmarks_);
+}
+
+void OutOfProcessInstance::OnPaint(
+    const std::vector<pp::Rect>& paint_rects,
+    std::vector<PaintManager::ReadyRect>* ready,
+    std::vector<pp::Rect>* pending) {
+  if (image_data_.is_null()) {
+    DCHECK(plugin_size_.IsEmpty());
+    return;
+  }
+  if (first_paint_) {
+    first_paint_ = false;
+    pp::Rect rect = pp::Rect(pp::Point(), image_data_.size());
+    unsigned int color = kBackgroundColorA << 24 |
+                         kBackgroundColorR << 16 |
+                         kBackgroundColorG << 8 |
+                         kBackgroundColorB;
+    FillRect(rect, color);
+    ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
+  }
+
+  if (!received_viewport_message_)
+    return;
+
+  engine_->PrePaint();
+
+  for (size_t i = 0; i < paint_rects.size(); i++) {
+    // Intersect with plugin area since there could be pending invalidates from
+    // when the plugin area was larger.
+    pp::Rect rect =
+        paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
+    if (rect.IsEmpty())
+      continue;
+
+    pp::Rect pdf_rect = available_area_.Intersect(rect);
+    if (!pdf_rect.IsEmpty()) {
+      pdf_rect.Offset(available_area_.x() * -1, 0);
+
+      std::vector<pp::Rect> pdf_ready;
+      std::vector<pp::Rect> pdf_pending;
+      engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
+      for (size_t j = 0; j < pdf_ready.size(); ++j) {
+        pdf_ready[j].Offset(available_area_.point());
+        ready->push_back(
+            PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
+      }
+      for (size_t j = 0; j < pdf_pending.size(); ++j) {
+        pdf_pending[j].Offset(available_area_.point());
+        pending->push_back(pdf_pending[j]);
+      }
+    }
+
+    for (size_t j = 0; j < background_parts_.size(); ++j) {
+      pp::Rect intersection = background_parts_[j].location.Intersect(rect);
+      if (!intersection.IsEmpty()) {
+        FillRect(intersection, background_parts_[j].color);
+        ready->push_back(
+            PaintManager::ReadyRect(intersection, image_data_, false));
+      }
+    }
+  }
+
+  engine_->PostPaint();
+}
+
+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_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
+    preview_engine_->HandleDocumentLoad(embed_preview_loader_);
+  } else {
+    NOTREACHED();
+  }
+}
+
+void OutOfProcessInstance::OnClientTimerFired(int32_t id) {
+  engine_->OnCallback(id);
+}
+
+void OutOfProcessInstance::CalculateBackgroundParts() {
+  background_parts_.clear();
+  int left_width = available_area_.x();
+  int right_start = available_area_.right();
+  int right_width = abs(plugin_size_.width() - available_area_.right());
+  int bottom = std::min(available_area_.bottom(), plugin_size_.height());
+
+  // Add the left, right, and bottom rectangles.  Note: we assume only
+  // horizontal centering.
+  BackgroundPart part;
+  part.color = kBackgroundColorA << 24 |
+               kBackgroundColorR << 16 |
+               kBackgroundColorG << 8 |
+               kBackgroundColorB;
+  part.location = pp::Rect(0, 0, left_width, bottom);
+  if (!part.location.IsEmpty())
+    background_parts_.push_back(part);
+  part.location = pp::Rect(right_start, 0, right_width, bottom);
+  if (!part.location.IsEmpty())
+    background_parts_.push_back(part);
+  part.location = pp::Rect(
+      0, bottom, plugin_size_.width(), plugin_size_.height() - bottom);
+  if (!part.location.IsEmpty())
+    background_parts_.push_back(part);
+}
+
+int OutOfProcessInstance::GetDocumentPixelWidth() const {
+  return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_));
+}
+
+int OutOfProcessInstance::GetDocumentPixelHeight() const {
+  return static_cast<int>(
+      ceil(document_size_.height() * zoom_ * device_scale_));
+}
+
+void OutOfProcessInstance::FillRect(const pp::Rect& rect, unsigned int color) {
+  DCHECK(!image_data_.is_null() || rect.IsEmpty());
+  unsigned int* buffer_start = static_cast<unsigned int*>(image_data_.data());
+  int stride = image_data_.stride();
+  unsigned int* ptr = buffer_start + rect.y() * stride / 4 + rect.x();
+  int height = rect.height();
+  int width = rect.width();
+  for (int y = 0; y < height; ++y) {
+    for (int x = 0; x < width; ++x)
+      *(ptr + x) = color;
+    ptr += stride /4;
+  }
+}
+
+void OutOfProcessInstance::DocumentSizeUpdated(const pp::Size& size) {
+  document_size_ = size;
+
+  pp::VarDictionary dimensions;
+  dimensions.Set(kType, kJSDocumentDimensionsType);
+  dimensions.Set(kJSDocumentWidth, pp::Var(document_size_.width()));
+  dimensions.Set(kJSDocumentHeight, pp::Var(document_size_.height()));
+  pp::VarArray page_dimensions_array;
+  int num_pages = engine_->GetNumberOfPages();
+  for (int i = 0; i < num_pages; ++i) {
+    pp::Rect page_rect = engine_->GetPageRect(i);
+    pp::VarDictionary page_dimensions;
+    page_dimensions.Set(kJSPageX, pp::Var(page_rect.x()));
+    page_dimensions.Set(kJSPageY, pp::Var(page_rect.y()));
+    page_dimensions.Set(kJSPageWidth, pp::Var(page_rect.width()));
+    page_dimensions.Set(kJSPageHeight, pp::Var(page_rect.height()));
+    page_dimensions_array.Set(i, page_dimensions);
+  }
+  dimensions.Set(kJSPageDimensions, page_dimensions_array);
+  PostMessage(dimensions);
+
+  OnGeometryChanged(zoom_, device_scale_);
+}
+
+void OutOfProcessInstance::Invalidate(const pp::Rect& rect) {
+  pp::Rect offset_rect(rect);
+  offset_rect.Offset(available_area_.point());
+  paint_manager_.InvalidateRect(offset_rect);
+}
+
+void OutOfProcessInstance::Scroll(const pp::Point& point) {
+  paint_manager_.ScrollRect(available_area_, point);
+}
+
+void OutOfProcessInstance::ScrollToX(int x) {
+  pp::VarDictionary position;
+  position.Set(kType, kJSSetScrollPositionType);
+  position.Set(kJSPositionX, pp::Var(x / device_scale_));
+  PostMessage(position);
+}
+
+void OutOfProcessInstance::ScrollToY(int y) {
+  pp::VarDictionary position;
+  position.Set(kType, kJSSetScrollPositionType);
+  position.Set(kJSPositionY, pp::Var(y / device_scale_));
+  PostMessage(position);
+}
+
+void OutOfProcessInstance::ScrollToPage(int page) {
+  if (engine_->GetNumberOfPages() == 0)
+    return;
+
+  pp::VarDictionary message;
+  message.Set(kType, kJSGoToPageType);
+  message.Set(kJSPageNumber, pp::Var(page));
+  PostMessage(message);
+}
+
+void OutOfProcessInstance::NavigateTo(const std::string& url,
+                                      bool open_in_new_tab) {
+  std::string url_copy(url);
+
+  // Empty |url_copy| is ok, and will effectively be a reload.
+  // Skip the code below so an empty URL does not turn into "http://", which
+  // will cause GURL to fail a DCHECK.
+  if (!url_copy.empty()) {
+    // If there's no scheme, add http.
+    if (url_copy.find("://") == std::string::npos &&
+        url_copy.find("mailto:") == std::string::npos) {
+      url_copy = std::string("http://") + url_copy;
+    }
+    // Make sure |url_copy| starts with a valid scheme.
+    if (url_copy.find("http://") != 0 &&
+        url_copy.find("https://") != 0 &&
+        url_copy.find("ftp://") != 0 &&
+        url_copy.find("mailto:") != 0) {
+      return;
+    }
+    // Make sure |url_copy| is not only a scheme.
+    if (url_copy == "http://" ||
+        url_copy == "https://" ||
+        url_copy == "ftp://" ||
+        url_copy == "mailto:") {
+      return;
+    }
+  }
+  if (open_in_new_tab) {
+    GetWindowObject().Call("open", url_copy);
+  } else {
+    GetWindowObject().GetProperty("top").GetProperty("location").
+        SetProperty("href", url_copy);
+  }
+}
+
+void OutOfProcessInstance::UpdateCursor(PP_CursorType_Dev cursor) {
+  if (cursor == cursor_)
+    return;
+  cursor_ = cursor;
+
+  const PPB_CursorControl_Dev* cursor_interface =
+      reinterpret_cast<const PPB_CursorControl_Dev*>(
+      pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE));
+  if (!cursor_interface) {
+    NOTREACHED();
+    return;
+  }
+
+  cursor_interface->SetCursor(
+      pp_instance(), cursor_, pp::ImageData().pp_resource(), NULL);
+}
+
+void OutOfProcessInstance::UpdateTickMarks(
+    const std::vector<pp::Rect>& tickmarks) {
+  float inverse_scale = 1.0f / device_scale_;
+  std::vector<pp::Rect> scaled_tickmarks = tickmarks;
+  for (size_t i = 0; i < scaled_tickmarks.size(); i++)
+    ScaleRect(inverse_scale, &scaled_tickmarks[i]);
+  tickmarks_ = scaled_tickmarks;
+}
+
+void OutOfProcessInstance::NotifyNumberOfFindResultsChanged(int total,
+                                                            bool final_result) {
+  // We don't want to spam the renderer with too many updates to the number of
+  // find results. Don't send an update if we sent one too recently. If it's the
+  // final update, we always send it though.
+  if (final_result) {
+    NumberOfFindResultsChanged(total, final_result);
+    SetTickmarks(tickmarks_);
+    return;
+  }
+
+  if (recently_sent_find_update_)
+    return;
+
+  NumberOfFindResultsChanged(total, final_result);
+  SetTickmarks(tickmarks_);
+  recently_sent_find_update_ = true;
+  pp::CompletionCallback callback =
+      timer_factory_.NewCallback(
+          &OutOfProcessInstance::ResetRecentlySentFindUpdate);
+  pp::Module::Get()->core()->CallOnMainThread(kFindResultCooldownMs,
+                                              callback, 0);
+}
+
+void OutOfProcessInstance::NotifySelectedFindResultChanged(
+    int current_find_index) {
+  SelectedFindResultChanged(current_find_index);
+}
+
+void OutOfProcessInstance::GetDocumentPassword(
+    pp::CompletionCallbackWithOutput<pp::Var> callback) {
+  if (password_callback_) {
+    NOTREACHED();
+    return;
+  }
+
+  password_callback_.reset(
+      new pp::CompletionCallbackWithOutput<pp::Var>(callback));
+  pp::VarDictionary message;
+  message.Set(pp::Var(kType), pp::Var(kJSGetPasswordType));
+  PostMessage(message);
+}
+
+void OutOfProcessInstance::Alert(const std::string& message) {
+  GetWindowObject().Call("alert", message);
+}
+
+bool OutOfProcessInstance::Confirm(const std::string& message) {
+  pp::Var result = GetWindowObject().Call("confirm", message);
+  return result.is_bool() ? result.AsBool() : false;
+}
+
+std::string OutOfProcessInstance::Prompt(const std::string& question,
+                                         const std::string& default_answer) {
+  pp::Var result = GetWindowObject().Call("prompt", question, default_answer);
+  return result.is_string() ? result.AsString() : std::string();
+}
+
+std::string OutOfProcessInstance::GetURL() {
+  return url_;
+}
+
+void OutOfProcessInstance::Email(const std::string& to,
+                                 const std::string& cc,
+                                 const std::string& bcc,
+                                 const std::string& subject,
+                                 const std::string& body) {
+  std::string javascript =
+      "var href = 'mailto:" + net::EscapeUrlEncodedData(to, false) +
+      "?cc=" + net::EscapeUrlEncodedData(cc, false) +
+      "&bcc=" + net::EscapeUrlEncodedData(bcc, false) +
+      "&subject=" + net::EscapeUrlEncodedData(subject, false) +
+      "&body=" + net::EscapeUrlEncodedData(body, false) +
+      "';var temp = window.open(href, '_blank', " +
+      "'width=1,height=1');if(temp) temp.close();";
+  ExecuteScript(javascript);
+}
+
+void OutOfProcessInstance::Print() {
+  if (!printing_enabled_ ||
+      (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
+       !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))) {
+    return;
+  }
+
+  pp::CompletionCallback callback =
+      print_callback_factory_.NewCallback(&OutOfProcessInstance::OnPrint);
+  pp::Module::Get()->core()->CallOnMainThread(0, callback);
+}
+
+void OutOfProcessInstance::OnPrint(int32_t) {
+  pp::PDF::Print(this);
+}
+
+void OutOfProcessInstance::SubmitForm(const std::string& url,
+                                      const void* data,
+                                      int length) {
+  pp::URLRequestInfo request(this);
+  request.SetURL(url);
+  request.SetMethod("POST");
+  request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
+
+  pp::CompletionCallback callback =
+      form_factory_.NewCallback(&OutOfProcessInstance::FormDidOpen);
+  form_loader_ = CreateURLLoaderInternal();
+  int rv = form_loader_.Open(request, callback);
+  if (rv != PP_OK_COMPLETIONPENDING)
+    callback.Run(rv);
+}
+
+void OutOfProcessInstance::FormDidOpen(int32_t result) {
+  // TODO: inform the user of success/failure.
+  if (result != PP_OK) {
+    NOTREACHED();
+  }
+}
+
+std::string OutOfProcessInstance::ShowFileSelectionDialog() {
+  // Seems like very low priority to implement, since the pdf has no way to get
+  // the file data anyways.  Javascript doesn't let you do this synchronously.
+  NOTREACHED();
+  return std::string();
+}
+
+pp::URLLoader OutOfProcessInstance::CreateURLLoader() {
+  return CreateURLLoaderInternal();
+}
+
+void OutOfProcessInstance::ScheduleCallback(int id, int delay_in_ms) {
+  pp::CompletionCallback callback =
+      timer_factory_.NewCallback(&OutOfProcessInstance::OnClientTimerFired);
+  pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id);
+}
+
+void OutOfProcessInstance::SearchString(const base::char16* string,
+                            const base::char16* term,
+                            bool case_sensitive,
+                            std::vector<SearchStringResult>* results) {
+  PP_PrivateFindResult* pp_results;
+  int count = 0;
+  pp::PDF::SearchString(
+      this,
+      reinterpret_cast<const unsigned short*>(string),
+      reinterpret_cast<const unsigned short*>(term),
+      case_sensitive,
+      &pp_results,
+      &count);
+
+  results->resize(count);
+  for (int i = 0; i < count; ++i) {
+    (*results)[i].start_index = pp_results[i].start_index;
+    (*results)[i].length = pp_results[i].length;
+  }
+
+  pp::Memory_Dev memory;
+  memory.MemFree(pp_results);
+}
+
+void OutOfProcessInstance::DocumentPaintOccurred() {
+}
+
+void OutOfProcessInstance::DocumentLoadComplete(int page_count) {
+  // Clear focus state for OSK.
+  FormTextFieldFocusChange(false);
+
+  DCHECK(document_load_state_ == LOAD_STATE_LOADING);
+  document_load_state_ = LOAD_STATE_COMPLETE;
+  UserMetricsRecordAction("PDF.LoadSuccess");
+
+  // Note: If we are in print preview mode the scroll location is retained
+  // across document loads so we don't want to scroll again and override it.
+  if (!IsPrintPreview()) {
+    int initial_page = GetInitialPage(url_);
+    if (initial_page >= 0)
+      ScrollToPage(initial_page);
+  } else {
+    AppendBlankPrintPreviewPages();
+    OnGeometryChanged(0, 0);
+  }
+
+  pp::VarDictionary message;
+  message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
+  message.Set(pp::Var(kJSProgressPercentage), pp::Var(100)) ;
+  PostMessage(message);
+
+  if (!full_)
+    return;
+
+  pp::PDF::DidStopLoading(this);
+
+  int content_restrictions =
+      CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
+  if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
+    content_restrictions |= CONTENT_RESTRICTION_COPY;
+
+  if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
+      !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
+    printing_enabled_ = false;
+  }
+
+  pp::PDF::SetContentRestriction(this, content_restrictions);
+
+  uma_.HistogramCustomCounts("PDF.PageCount", page_count,
+                             1, 1000000, 50);
+}
+
+void OutOfProcessInstance::RotateClockwise() {
+  engine_->RotateClockwise();
+}
+
+void OutOfProcessInstance::RotateCounterclockwise() {
+  engine_->RotateCounterclockwise();
+}
+
+void OutOfProcessInstance::PreviewDocumentLoadComplete() {
+  if (preview_document_load_state_ != LOAD_STATE_LOADING ||
+      preview_pages_info_.empty()) {
+    return;
+  }
+
+  preview_document_load_state_ = LOAD_STATE_COMPLETE;
+
+  int dest_page_index = preview_pages_info_.front().second;
+  int src_page_index =
+      ExtractPrintPreviewPageIndex(preview_pages_info_.front().first);
+  if (src_page_index > 0 &&  dest_page_index > -1 && preview_engine_.get())
+    engine_->AppendPage(preview_engine_.get(), dest_page_index);
+
+  preview_pages_info_.pop();
+  // |print_preview_page_count_| is not updated yet. Do not load any
+  // other preview pages till we get this information.
+  if (print_preview_page_count_ == 0)
+    return;
+
+  if (preview_pages_info_.size())
+    LoadAvailablePreviewPage();
+}
+
+void OutOfProcessInstance::DocumentLoadFailed() {
+  DCHECK(document_load_state_ == LOAD_STATE_LOADING);
+  UserMetricsRecordAction("PDF.LoadFailure");
+
+  if (full_)
+    pp::PDF::DidStopLoading(this);
+  document_load_state_ = LOAD_STATE_FAILED;
+
+  paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
+
+  // Send a progress value of -1 to indicate a failure.
+  pp::VarDictionary message;
+  message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
+  message.Set(pp::Var(kJSProgressPercentage), pp::Var(-1)) ;
+  PostMessage(message);
+}
+
+void OutOfProcessInstance::PreviewDocumentLoadFailed() {
+  UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
+  if (preview_document_load_state_ != LOAD_STATE_LOADING ||
+      preview_pages_info_.empty()) {
+    return;
+  }
+
+  preview_document_load_state_ = LOAD_STATE_FAILED;
+  preview_pages_info_.pop();
+
+  if (preview_pages_info_.size())
+    LoadAvailablePreviewPage();
+}
+
+pp::Instance* OutOfProcessInstance::GetPluginInstance() {
+  return this;
+}
+
+void OutOfProcessInstance::DocumentHasUnsupportedFeature(
+    const std::string& feature) {
+  std::string metric("PDF_Unsupported_");
+  metric += feature;
+  if (!unsupported_features_reported_.count(metric)) {
+    unsupported_features_reported_.insert(metric);
+    UserMetricsRecordAction(metric);
+  }
+
+  // Since we use an info bar, only do this for full frame plugins..
+  if (!full_)
+    return;
+
+  if (told_browser_about_unsupported_feature_)
+    return;
+  told_browser_about_unsupported_feature_ = true;
+
+  pp::PDF::HasUnsupportedFeature(this);
+}
+
+void OutOfProcessInstance::DocumentLoadProgress(uint32 available,
+                                                uint32 doc_size) {
+  double progress = 0.0;
+  if (doc_size == 0) {
+    // Document size is unknown. Use heuristics.
+    // We'll make progress logarithmic from 0 to 100M.
+    static const double kFactor = log(100000000.0) / 100.0;
+    if (available > 0) {
+      progress = log(static_cast<double>(available)) / kFactor;
+      if (progress > 100.0)
+        progress = 100.0;
+    }
+  } else {
+    progress = 100.0 * static_cast<double>(available) / doc_size;
+  }
+
+  // We send 100% load progress in DocumentLoadComplete.
+  if (progress >= 100)
+    return;
+
+  // Avoid sending too many progress messages over PostMessage.
+  if (progress > last_progress_sent_ + 1) {
+    last_progress_sent_ = progress;
+    pp::VarDictionary message;
+    message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
+    message.Set(pp::Var(kJSProgressPercentage), pp::Var(progress)) ;
+    PostMessage(message);
+  }
+}
+
+void OutOfProcessInstance::FormTextFieldFocusChange(bool in_focus) {
+  if (!text_input_.get())
+    return;
+  if (in_focus)
+    text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT);
+  else
+    text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE);
+}
+
+void OutOfProcessInstance::ResetRecentlySentFindUpdate(int32_t /* unused */) {
+  recently_sent_find_update_ = false;
+}
+
+void OutOfProcessInstance::OnGeometryChanged(double old_zoom,
+                                             float old_device_scale) {
+  if (zoom_ != old_zoom || device_scale_ != old_device_scale)
+    engine_->ZoomUpdated(zoom_ * device_scale_);
+
+  available_area_ = pp::Rect(plugin_size_);
+  int doc_width = GetDocumentPixelWidth();
+  if (doc_width < available_area_.width()) {
+    available_area_.Offset((available_area_.width() - doc_width) / 2, 0);
+    available_area_.set_width(doc_width);
+  }
+  int doc_height = GetDocumentPixelHeight();
+  if (doc_height < available_area_.height()) {
+    available_area_.set_height(doc_height);
+  }
+
+  CalculateBackgroundParts();
+  engine_->PageOffsetUpdated(available_area_.point());
+  engine_->PluginSizeUpdated(available_area_.size());
+
+  if (!document_size_.GetArea())
+    return;
+  paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
+}
+
+void OutOfProcessInstance::LoadUrl(const std::string& url) {
+  LoadUrlInternal(url, &embed_loader_, &OutOfProcessInstance::DidOpen);
+}
+
+void OutOfProcessInstance::LoadPreviewUrl(const std::string& url) {
+  LoadUrlInternal(url, &embed_preview_loader_,
+                  &OutOfProcessInstance::DidOpenPreview);
+}
+
+void OutOfProcessInstance::LoadUrlInternal(
+    const std::string& url,
+    pp::URLLoader* loader,
+    void (OutOfProcessInstance::* method)(int32_t)) {
+  pp::URLRequestInfo request(this);
+  request.SetURL(url);
+  request.SetMethod("GET");
+
+  *loader = CreateURLLoaderInternal();
+  pp::CompletionCallback callback = loader_factory_.NewCallback(method);
+  int rv = loader->Open(request, callback);
+  if (rv != PP_OK_COMPLETIONPENDING)
+    callback.Run(rv);
+}
+
+pp::URLLoader OutOfProcessInstance::CreateURLLoaderInternal() {
+  if (full_) {
+    pp::PDF::DidStartLoading(this);
+
+    // Disable save and print until the document is fully loaded, since they
+    // would generate an incomplete document.  Need to do this each time we
+    // call DidStartLoading since that resets the content restrictions.
+    pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE |
+                                   CONTENT_RESTRICTION_PRINT);
+  }
+
+  pp::URLLoader loader(this);
+
+  const PPB_URLLoaderTrusted* trusted_interface =
+      reinterpret_cast<const PPB_URLLoaderTrusted*>(
+          pp::Module::Get()->GetBrowserInterface(
+              PPB_URLLOADERTRUSTED_INTERFACE));
+  if (trusted_interface)
+    trusted_interface->GrantUniversalAccess(loader.pp_resource());
+  return loader;
+}
+
+int OutOfProcessInstance::GetInitialPage(const std::string& url) {
+#if defined(OS_NACL)
+  return -1;
+#else
+  size_t found_idx = url.find('#');
+  if (found_idx == std::string::npos)
+    return -1;
+
+  const std::string& ref = url.substr(found_idx + 1);
+  std::vector<std::string> fragments;
+  Tokenize(ref, kDelimiters, &fragments);
+
+  // Page number to return, zero-based.
+  int page = -1;
+
+  // Handle the case of http://foo.com/bar#NAMEDDEST. This is not explicitly
+  // mentioned except by example in the Adobe "PDF Open Parameters" document.
+  if ((fragments.size() == 1) && (fragments[0].find('=') == std::string::npos))
+    return engine_->GetNamedDestinationPage(fragments[0]);
+
+  for (size_t i = 0; i < fragments.size(); ++i) {
+    std::vector<std::string> key_value;
+    base::SplitString(fragments[i], '=', &key_value);
+    if (key_value.size() != 2)
+      continue;
+    const std::string& key = key_value[0];
+    const std::string& value = key_value[1];
+
+    if (base::strcasecmp(kPage, key.c_str()) == 0) {
+      // |page_value| is 1-based.
+      int page_value = -1;
+      if (base::StringToInt(value, &page_value) && page_value > 0)
+        page = page_value - 1;
+      continue;
+    }
+    if (base::strcasecmp(kNamedDest, key.c_str()) == 0) {
+      // |page_value| is 0-based.
+      int page_value = engine_->GetNamedDestinationPage(value);
+      if (page_value >= 0)
+        page = page_value;
+      continue;
+    }
+  }
+  return page;
+#endif
+}
+
+void OutOfProcessInstance::SetZoom(double scale) {
+  double old_zoom = zoom_;
+  zoom_ = scale;
+  OnGeometryChanged(old_zoom, device_scale_);
+}
+
+std::string OutOfProcessInstance::GetLocalizedString(PP_ResourceString id) {
+  pp::Var rv(pp::PDF::GetLocalizedString(this, id));
+  if (!rv.is_string())
+    return std::string();
+
+  return rv.AsString();
+}
+
+void OutOfProcessInstance::AppendBlankPrintPreviewPages() {
+  if (print_preview_page_count_ == 0)
+    return;
+  engine_->AppendBlankPages(print_preview_page_count_);
+  if (preview_pages_info_.size() > 0)
+    LoadAvailablePreviewPage();
+}
+
+bool OutOfProcessInstance::IsPrintPreview() {
+  return IsPrintPreviewUrl(url_);
+}
+
+void OutOfProcessInstance::ProcessPreviewPageInfo(const std::string& url,
+                                                  int dst_page_index) {
+  if (!IsPrintPreview())
+    return;
+
+  int src_page_index = ExtractPrintPreviewPageIndex(url);
+  if (src_page_index < 1)
+    return;
+
+  preview_pages_info_.push(std::make_pair(url, dst_page_index));
+  LoadAvailablePreviewPage();
+}
+
+void OutOfProcessInstance::LoadAvailablePreviewPage() {
+  if (preview_pages_info_.size() <= 0 ||
+      document_load_state_ != LOAD_STATE_COMPLETE) {
+    return;
+  }
+
+  std::string url = preview_pages_info_.front().first;
+  int dst_page_index = preview_pages_info_.front().second;
+  int src_page_index = ExtractPrintPreviewPageIndex(url);
+  if (src_page_index < 1 ||
+      dst_page_index >= print_preview_page_count_ ||
+      preview_document_load_state_ == LOAD_STATE_LOADING) {
+    return;
+  }
+
+  preview_document_load_state_ = LOAD_STATE_LOADING;
+  LoadPreviewUrl(url);
+}
+
+void OutOfProcessInstance::UserMetricsRecordAction(
+    const std::string& action) {
+  // TODO(raymes): Move this function to PPB_UMA_Private.
+  pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
+}
+
+}  // namespace chrome_pdf