Browser Plugin: Implement BrowserPluginObserver.

content/renderer/browser_plugin/browser_plugin.cc

Index: content/renderer/browser_plugin/browser_plugin.cc
diff --git a/content/renderer/browser_plugin/browser_plugin.cc b/content/renderer/browser_plugin/browser_plugin.cc
deleted file mode 100644
index 75af8912790bcf84ebd5744dde7711472fb41a1a..0000000000000000000000000000000000000000
--- a/content/renderer/browser_plugin/browser_plugin.cc
+++ /dev/null
@@ -1,1048 +0,0 @@
-// 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 "content/renderer/browser_plugin/browser_plugin.h"
-
-#include "base/json/json_string_value_serializer.h"
-#include "base/message_loop.h"
-#include "base/string_number_conversions.h"
-#include "base/string_util.h"
-#include "base/utf_string_conversions.h"
-#include "content/common/browser_plugin_messages.h"
-#include "content/common/view_messages.h"
-#include "content/public/common/content_client.h"
-#include "content/public/renderer/content_renderer_client.h"
-#include "content/renderer/browser_plugin/browser_plugin_bindings.h"
-#include "content/renderer/browser_plugin/browser_plugin_manager.h"
-#include "content/renderer/render_process_impl.h"
-#include "content/renderer/render_thread_impl.h"
-#include "content/renderer/v8_value_converter_impl.h"
-#include "skia/ext/platform_canvas.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebBindings.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebDOMCustomEvent.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebElement.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebPluginContainer.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebPluginParams.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebScriptSource.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebRect.h"
-#include "webkit/plugins/sad_plugin.h"
-
-#if defined (OS_WIN)
-#include "base/sys_info.h"
-#endif
-
-using WebKit::WebCanvas;
-using WebKit::WebPluginContainer;
-using WebKit::WebPluginParams;
-using WebKit::WebPoint;
-using WebKit::WebRect;
-using WebKit::WebURL;
-using WebKit::WebVector;
-
-namespace content {
-
-namespace {
-
-// Events.
-const char kEventExit[] = "exit";
-const char kEventLoadAbort[] = "loadabort";
-const char kEventLoadCommit[] = "loadcommit";
-const char kEventLoadRedirect[] = "loadredirect";
-const char kEventLoadStart[] = "loadstart";
-const char kEventLoadStop[] = "loadstop";
-const char kEventResponsive[] = "responsive";
-const char kEventSizeChanged[] = "sizechanged";
-const char kEventUnresponsive[] = "unresponsive";
-
-// Parameters/properties on events.
-const char kIsTopLevel[] = "isTopLevel";
-const char kNewURL[] = "newUrl";
-const char kNewHeight[] = "newHeight";
-const char kNewWidth[] = "newWidth";
-const char kOldURL[] = "oldUrl";
-const char kOldHeight[] = "oldHeight";
-const char kOldWidth[] = "oldWidth";
-const char kPartition[] = "partition";
-const char kPersistPrefix[] = "persist:";
-const char kProcessId[] = "processId";
-const char kReason[] = "reason";
-const char kSrc[] = "src";
-const char kURL[] = "url";
-
-// Error messages.
-const char kErrorAlreadyNavigated[] =
-    "The object has already navigated, so its partition cannot be changed.";
-const char kErrorInvalidPartition[] =
-    "Invalid partition attribute.";
-
-static std::string TerminationStatusToString(base::TerminationStatus status) {
-  switch (status) {
-    case base::TERMINATION_STATUS_NORMAL_TERMINATION:
-      return "normal";
-    case base::TERMINATION_STATUS_ABNORMAL_TERMINATION:
-      return "abnormal";
-    case base::TERMINATION_STATUS_PROCESS_WAS_KILLED:
-      return "killed";
-    case base::TERMINATION_STATUS_PROCESS_CRASHED:
-      return "crashed";
-    default:
-      // This should never happen.
-      DCHECK(false);
-      return "unknown";
-  }
-}
-}
-
-BrowserPlugin::BrowserPlugin(
-    int instance_id,
-    RenderViewImpl* render_view,
-    WebKit::WebFrame* frame,
-    const WebPluginParams& params)
-    : instance_id_(instance_id),
-      render_view_(render_view->AsWeakPtr()),
-      render_view_routing_id_(render_view->GetRoutingID()),
-      container_(NULL),
-      damage_buffer_sequence_id_(0),
-      resize_ack_received_(true),
-      sad_guest_(NULL),
-      guest_crashed_(false),
-      navigate_src_sent_(false),
-      auto_size_(false),
-      max_height_(0),
-      max_width_(0),
-      min_height_(0),
-      min_width_(0),
-      process_id_(-1),
-      persist_storage_(false),
-      valid_partition_id_(true),
-      content_window_routing_id_(MSG_ROUTING_NONE),
-      plugin_focused_(false),
-      embedder_focused_(false),
-      visible_(true),
-      size_changed_in_flight_(false),
-      browser_plugin_manager_(render_view->browser_plugin_manager()),
-      current_nav_entry_index_(0),
-      nav_entry_count_(0),
-      compositing_enabled_(false) {
-  browser_plugin_manager()->AddBrowserPlugin(instance_id, this);
-  bindings_.reset(new BrowserPluginBindings(this));
-
-  ParseAttributes(params);
-}
-
-BrowserPlugin::~BrowserPlugin() {
-  browser_plugin_manager()->RemoveBrowserPlugin(instance_id_);
-  browser_plugin_manager()->Send(
-      new BrowserPluginHostMsg_PluginDestroyed(
-          render_view_routing_id_,
-          instance_id_));
-}
-
-bool BrowserPlugin::OnMessageReceived(const IPC::Message& message) {
-  bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP(BrowserPlugin, message)
-    IPC_MESSAGE_HANDLER(BrowserPluginMsg_AdvanceFocus, OnAdvanceFocus)
-    IPC_MESSAGE_HANDLER(BrowserPluginMsg_GuestContentWindowReady,
-                        OnGuestContentWindowReady)
-    IPC_MESSAGE_HANDLER(BrowserPluginMsg_GuestGone, OnGuestGone)
-    IPC_MESSAGE_HANDLER(BrowserPluginMsg_GuestResponsive, OnGuestResponsive)
-    IPC_MESSAGE_HANDLER(BrowserPluginMsg_GuestUnresponsive, OnGuestUnresponsive)
-    IPC_MESSAGE_HANDLER(BrowserPluginMsg_LoadAbort, OnLoadAbort)
-    IPC_MESSAGE_HANDLER(BrowserPluginMsg_LoadCommit, OnLoadCommit)
-    IPC_MESSAGE_HANDLER(BrowserPluginMsg_LoadRedirect, OnLoadRedirect)
-    IPC_MESSAGE_HANDLER(BrowserPluginMsg_LoadStart, OnLoadStart)
-    IPC_MESSAGE_HANDLER(BrowserPluginMsg_LoadStop, OnLoadStop)
-    IPC_MESSAGE_HANDLER(BrowserPluginMsg_ShouldAcceptTouchEvents,
-                        OnShouldAcceptTouchEvents)
-    IPC_MESSAGE_HANDLER(BrowserPluginMsg_SetCursor, OnSetCursor)
-    IPC_MESSAGE_HANDLER(BrowserPluginMsg_UpdateRect, OnUpdateRect)
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP()
-  return handled;
-}
-
-void BrowserPlugin::UpdateDOMAttribute(
-    const std::string& attribute_name,
-    const std::string& attribute_value) {
-  if (!container())
-    return;
-
-  WebKit::WebElement element = container()->element();
-  WebKit::WebString web_attribute_name =
-      WebKit::WebString::fromUTF8(attribute_name);
-  std::string current_value(element.getAttribute(web_attribute_name).utf8());
-  if (current_value == attribute_value)
-    return;
-
-  if (attribute_value.empty()) {
-    element.removeAttribute(web_attribute_name);
-  } else {
-    element.setAttribute(web_attribute_name,
-        WebKit::WebString::fromUTF8(attribute_value));
-  }
-}
-
-bool BrowserPlugin::SetSrcAttribute(const std::string& src,
-                                    std::string* error_message) {
-  if (!valid_partition_id_) {
-    *error_message = kErrorInvalidPartition;
-    return false;
-  }
-
-  if (src.empty() || (src == src_ && !guest_crashed_))
-    return true;
-
-  // If we haven't created the guest yet, do so now. We will navigate it right
-  // after creation. If |src| is empty, we can delay the creation until we
-  // acutally need it.
-  if (!navigate_src_sent_) {
-    BrowserPluginHostMsg_CreateGuest_Params create_guest_params;
-    create_guest_params.storage_partition_id = storage_partition_id_;
-    create_guest_params.persist_storage = persist_storage_;
-    create_guest_params.focused = ShouldGuestBeFocused();
-    create_guest_params.visible = visible_;
-    GetDamageBufferWithSizeParams(&create_guest_params.auto_size_params,
-                                  &create_guest_params.resize_guest_params);
-    browser_plugin_manager()->Send(
-        new BrowserPluginHostMsg_CreateGuest(
-            render_view_routing_id_,
-            instance_id_,
-            create_guest_params));
-  }
-
-  browser_plugin_manager()->Send(
-      new BrowserPluginHostMsg_NavigateGuest(
-          render_view_routing_id_,
-          instance_id_,
-          src));
-  // Record that we sent a NavigateGuest message to embedder.
-  // Once this instance has navigated, the storage partition cannot be changed,
-  // so this value is used for enforcing this.
-  navigate_src_sent_ = true;
-  src_ = src;
-  return true;
-}
-
-void BrowserPlugin::SetAutoSizeAttribute(bool auto_size) {
-  if (auto_size_ == auto_size)
-    return;
-  auto_size_ = auto_size;
-  last_view_size_ = plugin_rect_.size();
-  UpdateGuestAutoSizeState();
-}
-
-void BrowserPlugin::PopulateAutoSizeParameters(
-    BrowserPluginHostMsg_AutoSize_Params* params) {
-  // If maxWidth or maxHeight have not been set, set them to the container size.
-  max_height_ = max_height_ ? max_height_ : height();
-  max_width_ = max_width_ ? max_width_ : width();
-  // minWidth should not be bigger than maxWidth, and minHeight should not be
-  // bigger than maxHeight.
-  min_height_ = std::min(min_height_, max_height_);
-  min_width_ = std::min(min_width_, max_width_);
-  params->enable = auto_size_;
-  params->max_size = gfx::Size(max_width_, max_height_);
-  params->min_size = gfx::Size(min_width_, min_height_);
-}
-
-void BrowserPlugin::UpdateGuestAutoSizeState() {
-  // If we haven't yet heard back from the guest about the last resize request,
-  // then we don't issue another request until we do in
-  // BrowserPlugin::UpdateRect.
-  if (!navigate_src_sent_ || !resize_ack_received_)
-    return;
-  BrowserPluginHostMsg_AutoSize_Params auto_size_params;
-  BrowserPluginHostMsg_ResizeGuest_Params resize_guest_params;
-  GetDamageBufferWithSizeParams(&auto_size_params, &resize_guest_params);
-  resize_ack_received_ = false;
-  browser_plugin_manager()->Send(new BrowserPluginHostMsg_SetAutoSize(
-      render_view_routing_id_,
-      instance_id_,
-      auto_size_params,
-      resize_guest_params));
-}
-
-void BrowserPlugin::SizeChangedDueToAutoSize(const gfx::Size& old_view_size) {
-  size_changed_in_flight_ = false;
-
-  std::map<std::string, base::Value*> props;
-  props[kOldHeight] = base::Value::CreateIntegerValue(old_view_size.height());
-  props[kOldWidth] = base::Value::CreateIntegerValue(old_view_size.width());
-  props[kNewHeight] = base::Value::CreateIntegerValue(last_view_size_.height());
-  props[kNewWidth] = base::Value::CreateIntegerValue(last_view_size_.width());
-  TriggerEvent(kEventSizeChanged, &props);
-}
-
-// static
-bool BrowserPlugin::UsesDamageBuffer(
-    const BrowserPluginMsg_UpdateRect_Params& params) {
-  return params.damage_buffer_sequence_id != 0;
-}
-
-bool BrowserPlugin::UsesPendingDamageBuffer(
-    const BrowserPluginMsg_UpdateRect_Params& params) {
-  if (!pending_damage_buffer_.get())
-    return false;
-  return damage_buffer_sequence_id_ == params.damage_buffer_sequence_id;
-}
-
-void BrowserPlugin::OnAdvanceFocus(int instance_id, bool reverse) {
-  DCHECK(render_view_);
-  render_view_->GetWebView()->advanceFocus(reverse);
-}
-
-void BrowserPlugin::OnGuestContentWindowReady(int instance_id,
-                                            int content_window_routing_id) {
-  DCHECK(content_window_routing_id != MSG_ROUTING_NONE);
-  content_window_routing_id_ = content_window_routing_id;
-}
-
-void BrowserPlugin::OnGuestGone(int instance_id, int process_id, int status) {
-  // We fire the event listeners before painting the sad graphic to give the
-  // developer an opportunity to display an alternative overlay image on crash.
-  std::string termination_status = TerminationStatusToString(
-      static_cast<base::TerminationStatus>(status));
-  std::map<std::string, base::Value*> props;
-  props[kProcessId] = base::Value::CreateIntegerValue(process_id);
-  props[kReason] = base::Value::CreateStringValue(termination_status);
-
-  // Event listeners may remove the BrowserPlugin from the document. If that
-  // happens, the BrowserPlugin will be scheduled for later deletion (see
-  // BrowserPlugin::destroy()). That will clear the container_ reference,
-  // but leave other member variables valid below.
-  TriggerEvent(kEventExit, &props);
-
-  guest_crashed_ = true;
-  // We won't paint the contents of the current backing store again so we might
-  // as well toss it out and save memory.
-  backing_store_.reset();
-  // If the BrowserPlugin is scheduled to be deleted, then container_ will be
-  // NULL so we shouldn't attempt to access it.
-  if (container_)
-    container_->invalidate();
-}
-
-void BrowserPlugin::OnGuestResponsive(int instance_id, int process_id) {
-  std::map<std::string, base::Value*> props;
-  props[kProcessId] = base::Value::CreateIntegerValue(process_id);
-  TriggerEvent(kEventResponsive, &props);
-}
-
-void BrowserPlugin::OnGuestUnresponsive(int instance_id, int process_id) {
-  std::map<std::string, base::Value*> props;
-  props[kProcessId] = base::Value::CreateIntegerValue(process_id);
-  TriggerEvent(kEventUnresponsive, &props);
-}
-
-void BrowserPlugin::OnLoadAbort(int instance_id,
-                                const GURL& url,
-                                bool is_top_level,
-                                const std::string& type) {
-  std::map<std::string, base::Value*> props;
-  props[kURL] = base::Value::CreateStringValue(url.spec());
-  props[kIsTopLevel] = base::Value::CreateBooleanValue(is_top_level);
-  props[kReason] = base::Value::CreateStringValue(type);
-  TriggerEvent(kEventLoadAbort, &props);
-}
-
-void BrowserPlugin::OnLoadCommit(
-    int instance_id,
-    const BrowserPluginMsg_LoadCommit_Params& params) {
-  // If the guest has just committed a new navigation then it is no longer
-  // crashed.
-  guest_crashed_ = false;
-  if (params.is_top_level) {
-    src_ = params.url.spec();
-    UpdateDOMAttribute(kSrc, src_.c_str());
-  }
-  process_id_ = params.process_id;
-  current_nav_entry_index_ = params.current_entry_index;
-  nav_entry_count_ = params.entry_count;
-
-  std::map<std::string, base::Value*> props;
-  props[kURL] = base::Value::CreateStringValue(params.url.spec());
-  props[kIsTopLevel] = base::Value::CreateBooleanValue(params.is_top_level);
-  TriggerEvent(kEventLoadCommit, &props);
-}
-
-void BrowserPlugin::OnLoadRedirect(int instance_id,
-                                   const GURL& old_url,
-                                   const GURL& new_url,
-                                   bool is_top_level) {
-  std::map<std::string, base::Value*> props;
-  props[kOldURL] = base::Value::CreateStringValue(old_url.spec());
-  props[kNewURL] = base::Value::CreateStringValue(new_url.spec());
-  props[kIsTopLevel] = base::Value::CreateBooleanValue(is_top_level);
-  TriggerEvent(kEventLoadRedirect, &props);
-}
-
-void BrowserPlugin::OnLoadStart(int instance_id,
-                                const GURL& url,
-                                bool is_top_level) {
-  std::map<std::string, base::Value*> props;
-  props[kURL] = base::Value::CreateStringValue(url.spec());
-  props[kIsTopLevel] = base::Value::CreateBooleanValue(is_top_level);
-
-  TriggerEvent(kEventLoadStart, &props);
-}
-
-void BrowserPlugin::OnLoadStop(int instance_id) {
-  TriggerEvent(kEventLoadStop, NULL);
-}
-
-void BrowserPlugin::OnSetCursor(int instance_id, const WebCursor& cursor) {
-  cursor_ = cursor;
-}
-
-void BrowserPlugin::OnShouldAcceptTouchEvents(int instance_id, bool accept) {
-  if (container()) {
-    container()->requestTouchEventType(accept ?
-        WebKit::WebPluginContainer::TouchEventRequestTypeRaw :
-        WebKit::WebPluginContainer::TouchEventRequestTypeNone);
-  }
-}
-
-void BrowserPlugin::OnUpdateRect(
-    int instance_id,
-    const BrowserPluginMsg_UpdateRect_Params& params) {
-  bool use_new_damage_buffer = !backing_store_;
-  BrowserPluginHostMsg_AutoSize_Params auto_size_params;
-  BrowserPluginHostMsg_ResizeGuest_Params resize_guest_params;
-  // If we have a pending damage buffer, and the guest has begun to use the
-  // damage buffer then we know the guest will no longer use the current
-  // damage buffer. At this point, we drop the current damage buffer, and
-  // mark the pending damage buffer as the current damage buffer.
-  if (UsesPendingDamageBuffer(params)) {
-    SwapDamageBuffers();
-    use_new_damage_buffer = true;
-  }
-
-  if (params.is_resize_ack || !UsesDamageBuffer(params))
-    resize_ack_received_ = true;
-
-  if ((!auto_size_ &&
-       (width() != params.view_size.width() ||
-        height() != params.view_size.height())) ||
-      (auto_size_ && (!InAutoSizeBounds(params.view_size)))) {
-    if (!resize_ack_received_) {
-      // The guest has not yet responded to the last resize request, and
-      // so we don't want to do anything at this point other than ACK the guest.
-      PopulateAutoSizeParameters(&auto_size_params);
-    } else {
-      // If we have no pending damage buffer, then the guest has not caught up
-      // with the BrowserPlugin container. We now tell the guest about the new
-      // container size.
-      GetDamageBufferWithSizeParams(&auto_size_params,
-                                    &resize_guest_params);
-    }
-    browser_plugin_manager()->Send(new BrowserPluginHostMsg_UpdateRect_ACK(
-        render_view_routing_id_,
-        instance_id_,
-        auto_size_params,
-        resize_guest_params));
-    return;
-  }
-
-  if (auto_size_ && (params.view_size != last_view_size_)) {
-    if (backing_store_)
-      backing_store_->Clear(SK_ColorWHITE);
-    gfx::Size old_view_size = last_view_size_;
-    last_view_size_ = params.view_size;
-    // Schedule a SizeChanged instead of calling it directly to ensure that
-    // the backing store has been updated before the developer attempts to
-    // resize to avoid flicker. |size_changed_in_flight_| acts as a form of
-    // flow control for SizeChanged events. If the guest's view size is changing
-    // rapidly before a SizeChanged event fires, then we avoid scheduling
-    // another SizeChanged event. SizeChanged reads the new size from
-    // |last_view_size_| so we can be sure that it always fires an event
-    // with the last seen view size.
-    if (container_ && !size_changed_in_flight_) {
-      size_changed_in_flight_ = true;
-      MessageLoop::current()->PostTask(
-          FROM_HERE,
-          base::Bind(&BrowserPlugin::SizeChangedDueToAutoSize,
-                     base::Unretained(this),
-                     old_view_size));
-    }
-  }
-
-  // No more work to do since the guest is no longer using a damage buffer.
-  if (!UsesDamageBuffer(params))
-    return;
-
-  // If we are seeing damage buffers, HW compositing should be turned off.
-  EnableCompositing(false);
-
-  // If we are now using a new damage buffer, then that means that the guest
-  // has updated its size state in response to a resize request. We change
-  // the backing store's size to accomodate the new damage buffer size.
-  if (use_new_damage_buffer) {
-    int backing_store_width = auto_size_ ? max_width_ : width();
-    int backing_store_height = auto_size_ ? max_height_: height();
-    backing_store_.reset(
-        new BrowserPluginBackingStore(
-            gfx::Size(backing_store_width, backing_store_height),
-            params.scale_factor));
-  }
-
-  // Update the backing store.
-  if (!params.scroll_rect.IsEmpty()) {
-    backing_store_->ScrollBackingStore(params.scroll_delta,
-                                       params.scroll_rect,
-                                       params.view_size);
-  }
-  for (unsigned i = 0; i < params.copy_rects.size(); i++) {
-    backing_store_->PaintToBackingStore(params.bitmap_rect,
-                                        params.copy_rects,
-                                        current_damage_buffer_->memory());
-  }
-  // Invalidate the container.
-  // If the BrowserPlugin is scheduled to be deleted, then container_ will be
-  // NULL so we shouldn't attempt to access it.
-  if (container_)
-    container_->invalidate();
-  PopulateAutoSizeParameters(&auto_size_params);
-  browser_plugin_manager()->Send(new BrowserPluginHostMsg_UpdateRect_ACK(
-      render_view_routing_id_,
-      instance_id_,
-      auto_size_params,
-      resize_guest_params));
-}
-
-void BrowserPlugin::SetMaxHeightAttribute(int max_height) {
-  if (max_height_ == max_height)
-    return;
-  max_height_ = max_height;
-  if (!auto_size_)
-    return;
-  UpdateGuestAutoSizeState();
-}
-
-void BrowserPlugin::SetMaxWidthAttribute(int max_width) {
-  if (max_width_ == max_width)
-    return;
-  max_width_ = max_width;
-  if (!auto_size_)
-    return;
-  UpdateGuestAutoSizeState();
-}
-
-void BrowserPlugin::SetMinHeightAttribute(int min_height) {
-  if (min_height_ == min_height)
-    return;
-  min_height_ = min_height;
-  if (!auto_size_)
-     return;
-  UpdateGuestAutoSizeState();
-}
-
-void BrowserPlugin::SetMinWidthAttribute(int min_width) {
-  if (min_width_ == min_width)
-    return;
-  min_width_ = min_width;
-  if (!auto_size_)
-     return;
-  UpdateGuestAutoSizeState();
-}
-
-bool BrowserPlugin::InAutoSizeBounds(const gfx::Size& size) const {
-  return size.width() <= max_width_ && size.height() <= max_height_;
-}
-
-NPObject* BrowserPlugin::GetContentWindow() const {
-  if (content_window_routing_id_ == MSG_ROUTING_NONE)
-    return NULL;
-  RenderViewImpl* guest_render_view = static_cast<RenderViewImpl*>(
-      ChildThread::current()->ResolveRoute(content_window_routing_id_));
-  if (!guest_render_view)
-    return NULL;
-  WebKit::WebFrame* guest_frame = guest_render_view->GetWebView()->mainFrame();
-  return guest_frame->windowObject();
-}
-
-std::string BrowserPlugin::GetPartitionAttribute() const {
-  std::string value;
-  if (persist_storage_)
-    value.append(kPersistPrefix);
-
-  value.append(storage_partition_id_);
-  return value;
-}
-
-bool BrowserPlugin::CanGoBack() const {
-  return nav_entry_count_ > 1 && current_nav_entry_index_ > 0;
-}
-
-bool BrowserPlugin::CanGoForward() const {
-  return current_nav_entry_index_ >= 0 &&
-      current_nav_entry_index_ < (nav_entry_count_ - 1);
-}
-
-bool BrowserPlugin::SetPartitionAttribute(const std::string& partition_id,
-                                          std::string* error_message) {
-  if (navigate_src_sent_) {
-    *error_message = kErrorAlreadyNavigated;
-    return false;
-  }
-
-  std::string input = partition_id;
-
-  // Since the "persist:" prefix is in ASCII, StartsWith will work fine on
-  // UTF-8 encoded |partition_id|. If the prefix is a match, we can safely
-  // remove the prefix without splicing in the middle of a multi-byte codepoint.
-  // We can use the rest of the string as UTF-8 encoded one.
-  if (StartsWithASCII(input, kPersistPrefix, true)) {
-    size_t index = input.find(":");
-    CHECK(index != std::string::npos);
-    // It is safe to do index + 1, since we tested for the full prefix above.
-    input = input.substr(index + 1);
-    if (input.empty()) {
-      valid_partition_id_ = false;
-      *error_message = kErrorInvalidPartition;
-      return false;
-    }
-    persist_storage_ = true;
-  } else {
-    persist_storage_ = false;
-  }
-
-  valid_partition_id_ = true;
-  storage_partition_id_ = input;
-  return true;
-}
-
-void BrowserPlugin::ParseAttributes(const WebKit::WebPluginParams& params) {
-  std::string src;
-
-  // Get the src attribute from the attributes vector
-  for (unsigned i = 0; i < params.attributeNames.size(); ++i) {
-    std::string attributeName = params.attributeNames[i].utf8();
-    if (LowerCaseEqualsASCII(attributeName, kSrc)) {
-      src = params.attributeValues[i].utf8();
-    } else if (LowerCaseEqualsASCII(attributeName, kPartition)) {
-      std::string error;
-      SetPartitionAttribute(params.attributeValues[i].utf8(), &error);
-    }
-  }
-
-  // Set the 'src' attribute last, as it will set the has_navigated_ flag to
-  // true, which prevents changing the 'partition' attribute.
-  std::string error;
-  SetSrcAttribute(src, &error);
-}
-
-float BrowserPlugin::GetDeviceScaleFactor() const {
-  if (!render_view_)
-    return 1.0f;
-  return render_view_->GetWebView()->deviceScaleFactor();
-}
-
-void BrowserPlugin::TriggerEvent(const std::string& event_name,
-                                 std::map<std::string, base::Value*>* props) {
-  if (!container() || !container()->element().document().frame())
-    return;
-  v8::HandleScope handle_scope;
-  std::string json_string;
-  if (props) {
-    base::DictionaryValue dict;
-    for (std::map<std::string, base::Value*>::iterator iter = props->begin(),
-             end = props->end(); iter != end; ++iter) {
-      dict.Set(iter->first, iter->second);
-    }
-
-    JSONStringValueSerializer serializer(&json_string);
-    if (!serializer.Serialize(dict))
-      return;
-  }
-
-  WebKit::WebFrame* frame = container()->element().document().frame();
-  WebKit::WebDOMEvent dom_event = frame->document().createEvent("CustomEvent");
-  WebKit::WebDOMCustomEvent event = dom_event.to<WebKit::WebDOMCustomEvent>();
-
-  // The events triggered directly from the plugin <object> are internal events
-  // whose implementation details can (and likely will) change over time. The
-  // wrapper/shim (e.g. <webview> tag) should receive these events, and expose a
-  // more appropriate (and stable) event to the consumers as part of the API.
-  std::string internal_name = base::StringPrintf("-internal-%s",
-                                                 event_name.c_str());
-  event.initCustomEvent(
-      WebKit::WebString::fromUTF8(internal_name.c_str()),
-      false, false,
-      WebKit::WebSerializedScriptValue::serialize(
-          v8::String::New(json_string.c_str(), json_string.size())));
-  container()->element().dispatchEvent(event);
-}
-
-void BrowserPlugin::Back() {
-  if (!navigate_src_sent_)
-    return;
-  browser_plugin_manager()->Send(
-      new BrowserPluginHostMsg_Go(render_view_routing_id_,
-                                  instance_id_, -1));
-}
-
-void BrowserPlugin::Forward() {
-  if (!navigate_src_sent_)
-    return;
-  browser_plugin_manager()->Send(
-      new BrowserPluginHostMsg_Go(render_view_routing_id_,
-                                  instance_id_, 1));
-}
-
-void BrowserPlugin::Go(int relative_index) {
-  if (!navigate_src_sent_)
-    return;
-  browser_plugin_manager()->Send(
-      new BrowserPluginHostMsg_Go(render_view_routing_id_,
-                                  instance_id_,
-                                  relative_index));
-}
-
-void BrowserPlugin::TerminateGuest() {
-  if (!navigate_src_sent_)
-    return;
-  browser_plugin_manager()->Send(
-      new BrowserPluginHostMsg_TerminateGuest(render_view_routing_id_,
-                                              instance_id_));
-}
-
-void BrowserPlugin::Stop() {
-  if (!navigate_src_sent_)
-    return;
-  browser_plugin_manager()->Send(
-      new BrowserPluginHostMsg_Stop(render_view_routing_id_,
-                                    instance_id_));
-}
-
-void BrowserPlugin::Reload() {
-  if (!navigate_src_sent_)
-    return;
-  browser_plugin_manager()->Send(
-      new BrowserPluginHostMsg_Reload(render_view_routing_id_,
-                                      instance_id_));
-}
-
-void BrowserPlugin::SetEmbedderFocus(bool focused) {
-  if (embedder_focused_ == focused)
-    return;
-
-  bool old_guest_focus_state = ShouldGuestBeFocused();
-  embedder_focused_ = focused;
-
-  if (ShouldGuestBeFocused() != old_guest_focus_state)
-    UpdateGuestFocusState();
-}
-
-void BrowserPlugin::UpdateGuestFocusState() {
-  if (!navigate_src_sent_)
-    return;
-  bool should_be_focused = ShouldGuestBeFocused();
-  browser_plugin_manager()->Send(new BrowserPluginHostMsg_SetFocus(
-      render_view_routing_id_,
-      instance_id_,
-      should_be_focused));
-}
-
-bool BrowserPlugin::ShouldGuestBeFocused() const {
-  return plugin_focused_ && embedder_focused_;
-}
-
-WebKit::WebPluginContainer* BrowserPlugin::container() const {
-  return container_;
-}
-
-bool BrowserPlugin::initialize(WebPluginContainer* container) {
-  container_ = container;
-  container_->setWantsWheelEvents(true);
-  return true;
-}
-
-void BrowserPlugin::EnableCompositing(bool enable) {
-  if (enable) {
-    LOG(ERROR) << "BrowserPlugin compositing not yet implemented.";
-    return;
-  }
-
-  compositing_enabled_ = enable;
-}
-
-void BrowserPlugin::destroy() {
-  // The BrowserPlugin's WebPluginContainer is deleted immediately after this
-  // call returns, so let's not keep a reference to it around.
-  container_ = NULL;
-  MessageLoop::current()->DeleteSoon(FROM_HERE, this);
-}
-
-NPObject* BrowserPlugin::scriptableObject() {
-  NPObject* browser_plugin_np_object(bindings_->np_object());
-  // The object is expected to be retained before it is returned.
-  WebKit::WebBindings::retainObject(browser_plugin_np_object);
-  return browser_plugin_np_object;
-}
-
-bool BrowserPlugin::supportsKeyboardFocus() const {
-  return true;
-}
-
-bool BrowserPlugin::canProcessDrag() const {
-  return true;
-}
-
-void BrowserPlugin::paint(WebCanvas* canvas, const WebRect& rect) {
-  if (guest_crashed_) {
-    if (!sad_guest_)  // Lazily initialize bitmap.
-      sad_guest_ = content::GetContentClient()->renderer()->
-          GetSadWebViewBitmap();
-    // content_shell does not have the sad plugin bitmap, so we'll paint black
-    // instead to make it clear that something went wrong.
-    if (sad_guest_) {
-      webkit::PaintSadPlugin(canvas, plugin_rect_, *sad_guest_);
-      return;
-    }
-  }
-  SkAutoCanvasRestore auto_restore(canvas, true);
-  canvas->translate(plugin_rect_.x(), plugin_rect_.y());
-  SkRect image_data_rect = SkRect::MakeXYWH(
-      SkIntToScalar(0),
-      SkIntToScalar(0),
-      SkIntToScalar(plugin_rect_.width()),
-      SkIntToScalar(plugin_rect_.height()));
-  canvas->clipRect(image_data_rect);
-  // Paint black or white in case we have nothing in our backing store or we
-  // need to show a gutter.
-  SkPaint paint;
-  paint.setStyle(SkPaint::kFill_Style);
-  paint.setColor(guest_crashed_ ? SK_ColorBLACK : SK_ColorWHITE);
-  canvas->drawRect(image_data_rect, paint);
-  // Stay a solid color if we have never set a non-empty src, or we don't have a
-  // backing store.
-  if (!backing_store_.get() || !navigate_src_sent_)
-    return;
-  float inverse_scale_factor =  1.0f / backing_store_->GetScaleFactor();
-  canvas->scale(inverse_scale_factor, inverse_scale_factor);
-  canvas->drawBitmap(backing_store_->GetBitmap(), 0, 0);
-}
-
-bool BrowserPlugin::InBounds(const gfx::Point& position) const {
-  // Note that even for plugins that are rotated using rotate transformations,
-  // we use the the |plugin_rect_| provided by updateGeometry, which means we
-  // will be off if |position| is within the plugin rect but does not fall
-  // within the actual plugin boundary. Not supporting such edge case is OK
-  // since this function should not be used for making security-sensitive
-  // decisions.
-  // This also does not take overlapping plugins into account.
-  bool result = position.x() >= plugin_rect_.x() &&
-      position.x() < plugin_rect_.x() + plugin_rect_.width() &&
-      position.y() >= plugin_rect_.y() &&
-      position.y() < plugin_rect_.y() + plugin_rect_.height();
-  return result;
-}
-
-gfx::Point BrowserPlugin::ToLocalCoordinates(const gfx::Point& point) const {
-  if (container_)
-    return container_->windowToLocalPoint(WebKit::WebPoint(point));
-  return gfx::Point(point.x() - plugin_rect_.x(), point.y() - plugin_rect_.y());
-}
-
-void BrowserPlugin::updateGeometry(
-    const WebRect& window_rect,
-    const WebRect& clip_rect,
-    const WebVector<WebRect>& cut_outs_rects,
-    bool is_visible) {
-  int old_width = width();
-  int old_height = height();
-  plugin_rect_ = window_rect;
-  // In AutoSize mode, guests don't care when the BrowserPlugin container is
-  // resized. If |!resize_ack_received_|, then we are still waiting on a
-  // previous resize to be ACK'ed and so we don't issue additional resizes
-  // until the previous one is ACK'ed.
-  if (!navigate_src_sent_ || auto_size_ || !resize_ack_received_ ||
-      (old_width == window_rect.width &&
-       old_height == window_rect.height)) {
-    return;
-  }
-
-  BrowserPluginHostMsg_ResizeGuest_Params params;
-  PopulateResizeGuestParameters(&params, gfx::Size(width(), height()));
-  resize_ack_received_ = false;
-  browser_plugin_manager()->Send(new BrowserPluginHostMsg_ResizeGuest(
-      render_view_routing_id_,
-      instance_id_,
-      params));
-}
-
-void BrowserPlugin::SwapDamageBuffers() {
-  current_damage_buffer_.reset(pending_damage_buffer_.release());
-  resize_ack_received_ = true;
-}
-
-void BrowserPlugin::PopulateResizeGuestParameters(
-    BrowserPluginHostMsg_ResizeGuest_Params* params,
-    const gfx::Size& view_size) {
-  params->view_size = view_size;
-  params->scale_factor = GetDeviceScaleFactor();
-
-  // In HW compositing mode, we do not need a damage buffer.
-  if (compositing_enabled_)
-    return;
-
-  const size_t stride = skia::PlatformCanvasStrideForWidth(view_size.width());
-  // Make sure the size of the damage buffer is at least four bytes so that we
-  // can fit in a magic word to verify that the memory is shared correctly.
-  size_t size =
-      std::max(sizeof(unsigned int),
-               static_cast<size_t>(view_size.height() *
-                                   stride *
-                                   GetDeviceScaleFactor() *
-                                   GetDeviceScaleFactor()));
-
-  params->damage_buffer_size = size;
-  pending_damage_buffer_.reset(
-      CreateDamageBuffer(size, &params->damage_buffer_handle));
-  if (!pending_damage_buffer_.get())
-    NOTREACHED();
-  params->damage_buffer_sequence_id = ++damage_buffer_sequence_id_;
-}
-
-void BrowserPlugin::GetDamageBufferWithSizeParams(
-    BrowserPluginHostMsg_AutoSize_Params* auto_size_params,
-    BrowserPluginHostMsg_ResizeGuest_Params* resize_guest_params) {
-  PopulateAutoSizeParameters(auto_size_params);
-  gfx::Size view_size = auto_size_params->enable ? auto_size_params->max_size :
-      gfx::Size(width(), height());
-  if (view_size.IsEmpty())
-    return;
-  resize_ack_received_ = false;
-  PopulateResizeGuestParameters(resize_guest_params, view_size);
-}
-
-#if defined(OS_POSIX)
-base::SharedMemory* BrowserPlugin::CreateDamageBuffer(
-    const size_t size,
-    base::SharedMemoryHandle* damage_buffer_handle) {
-  scoped_ptr<base::SharedMemory> shared_buf(
-      content::RenderThread::Get()->HostAllocateSharedMemoryBuffer(
-          size).release());
-
-  if (shared_buf.get()) {
-    if (shared_buf->Map(size)) {
-      // Insert the magic word.
-      *static_cast<unsigned int*>(shared_buf->memory()) = 0xdeadbeef;
-      shared_buf->ShareToProcess(base::GetCurrentProcessHandle(),
-                                 damage_buffer_handle);
-      return shared_buf.release();
-    }
-  }
-  NOTREACHED();
-  return NULL;
-}
-#elif defined(OS_WIN)
-base::SharedMemory* BrowserPlugin::CreateDamageBuffer(
-    const size_t size,
-    base::SharedMemoryHandle* damage_buffer_handle) {
-  scoped_ptr<base::SharedMemory> shared_buf(new base::SharedMemory());
-
-  if (!shared_buf->CreateAndMapAnonymous(size)) {
-    NOTREACHED() << "Buffer allocation failed";
-    return NULL;
-  }
-
-  // Insert the magic word.
-  *static_cast<unsigned int*>(shared_buf->memory()) = 0xdeadbeef;
-  if (shared_buf->ShareToProcess(base::GetCurrentProcessHandle(),
-                                 damage_buffer_handle))
-    return shared_buf.release();
-  NOTREACHED();
-  return NULL;
-}
-#endif
-
-void BrowserPlugin::updateFocus(bool focused) {
-  if (plugin_focused_ == focused)
-    return;
-
-  bool old_guest_focus_state = ShouldGuestBeFocused();
-  plugin_focused_ = focused;
-
-  if (ShouldGuestBeFocused() != old_guest_focus_state)
-    UpdateGuestFocusState();
-}
-
-void BrowserPlugin::updateVisibility(bool visible) {
-  if (visible_ == visible)
-    return;
-
-  visible_ = visible;
-  if (!navigate_src_sent_)
-    return;
-
-  browser_plugin_manager()->Send(new BrowserPluginHostMsg_SetVisibility(
-      render_view_routing_id_,
-      instance_id_,
-      visible));
-}
-
-bool BrowserPlugin::acceptsInputEvents() {
-  return true;
-}
-
-bool BrowserPlugin::handleInputEvent(const WebKit::WebInputEvent& event,
-                                     WebKit::WebCursorInfo& cursor_info) {
-  if (guest_crashed_ || !navigate_src_sent_ ||
-      event.type == WebKit::WebInputEvent::ContextMenu)
-    return false;
-  browser_plugin_manager()->Send(
-      new BrowserPluginHostMsg_HandleInputEvent(render_view_routing_id_,
-                                                instance_id_,
-                                                plugin_rect_,
-                                                &event));
-  cursor_.GetCursorInfo(&cursor_info);
-  return true;
-}
-
-bool BrowserPlugin::handleDragStatusUpdate(WebKit::WebDragStatus drag_status,
-                                           const WebKit::WebDragData& drag_data,
-                                           WebKit::WebDragOperationsMask mask,
-                                           const WebKit::WebPoint& position,
-                                           const WebKit::WebPoint& screen) {
-  if (guest_crashed_ || !navigate_src_sent_)
-    return false;
-  browser_plugin_manager()->Send(
-      new BrowserPluginHostMsg_DragStatusUpdate(
-        render_view_routing_id_,
-        instance_id_,
-        drag_status,
-        WebDropData(drag_data),
-        mask,
-        position));
-  return false;
-}
-
-void BrowserPlugin::didReceiveResponse(
-    const WebKit::WebURLResponse& response) {
-}
-
-void BrowserPlugin::didReceiveData(const char* data, int data_length) {
-}
-
-void BrowserPlugin::didFinishLoading() {
-}
-
-void BrowserPlugin::didFailLoading(const WebKit::WebURLError& error) {
-}
-
-void BrowserPlugin::didFinishLoadingFrameRequest(const WebKit::WebURL& url,
-                                                 void* notify_data) {
-}
-
-void BrowserPlugin::didFailLoadingFrameRequest(
-    const WebKit::WebURL& url,
-    void* notify_data,
-    const WebKit::WebURLError& error) {
-}
-
-}  // namespace content