Plugin Power Saver: Throttled Plugins should block TCPSocket reads.

content/renderer/pepper/pepper_plugin_instance_impl.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 "content/renderer/pepper/pepper_plugin_instance_impl.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/logging.h"
 #include "base/memory/linked_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/stl_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_offset_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
 #include "base/trace_event/trace_event.h"
 #include "cc/base/latency_info_swap_promise.h"
 #include "cc/blink/web_layer_impl.h"
 #include "cc/layers/texture_layer.h"
 #include "cc/trees/layer_tree_host.h"
 #include "content/common/content_constants_internal.h"
 #include "content/common/frame_messages.h"
 #include "content/common/input/web_input_event_traits.h"
+#include "content/common/view_messages.h"
 #include "content/public/common/content_constants.h"
 #include "content/public/common/page_zoom.h"
 #include "content/public/renderer/content_renderer_client.h"
 #include "content/renderer/gpu/render_widget_compositor.h"
 #include "content/renderer/pepper/content_decryptor_delegate.h"
 #include "content/renderer/pepper/event_conversion.h"
 #include "content/renderer/pepper/fullscreen_container.h"
 #include "content/renderer/pepper/gfx_conversion.h"
 #include "content/renderer/pepper/host_dispatcher_wrapper.h"
 #include "content/renderer/pepper/host_globals.h"
@@ skipping 2006 matching lines @@
   if (!bound_graphics_2d_platform_)
     return false;
   return bound_graphics_2d_platform_->PrepareTextureMailbox(mailbox,
                                                             release_callback);
 }
 
 void PepperPluginInstanceImpl::OnDestruct() { render_frame_ = NULL; }
 
 void PepperPluginInstanceImpl::OnThrottleStateChange() {
   SendDidChangeView();
+
+  bool is_throttled = throttler_->IsThrottled();
+  render_frame()->Send(new ViewHostMsg_PluginInstanceThrottleStateChange(
+      module_->GetPluginChildId(), pp_instance_, is_throttled));
 }
 
 void PepperPluginInstanceImpl::OnHiddenForPlaceholder(bool hidden) {
   if (hidden) {
     container_->setWebLayer(nullptr);
   } else {
     UpdateLayer(true /* device_changed */);
   }
 }
 
@@ skipping 1231 matching lines @@
 
 void PepperPluginInstanceImpl::RecordFlashJavaScriptUse() {
   if (initialized_ && !javascript_used_ && is_flash_plugin_) {
     javascript_used_ = true;
     RenderThread::Get()->RecordAction(
         base::UserMetricsAction("Flash.JavaScriptUsed"));
   }
 }
 
 }  // namespace content