Revert of Chromium plumbing for Screen Orientation API orientationchange events.

content/browser/renderer_host/render_process_host_impl.cc

Index: content/browser/renderer_host/render_process_host_impl.cc
diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index f8808632478c14f08ad3929b4fb062231314d8be..cf1b18334de4558d50989364f483195ad72cae0d 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -94,7 +94,6 @@
 #include "content/browser/renderer_host/text_input_client_message_filter.h"
 #include "content/browser/renderer_host/websocket_dispatcher_host.h"
 #include "content/browser/resolve_proxy_msg_helper.h"
-#include "content/browser/screen_orientation/screen_orientation_dispatcher_host.h"
 #include "content/browser/service_worker/service_worker_context_wrapper.h"
 #include "content/browser/service_worker/service_worker_dispatcher_host.h"
 #include "content/browser/speech/input_tag_speech_dispatcher_host.h"
@@ -397,8 +396,7 @@
           within_process_died_observer_(false),
           power_monitor_broadcaster_(this),
           geolocation_dispatcher_host_(NULL),
-          weak_factory_(this),
-          screen_orientation_dispatcher_host_(NULL) {
+          weak_factory_(this) {
   widget_helper_ = new RenderWidgetHelper();
 
   ChildProcessSecurityPolicyImpl::GetInstance()->Add(GetID());
@@ -789,8 +787,6 @@
     AddFilter(new MemoryBenchmarkMessageFilter());
 #endif
   AddFilter(new VibrationMessageFilter());
-  screen_orientation_dispatcher_host_ = new ScreenOrientationDispatcherHost();
-  AddFilter(screen_orientation_dispatcher_host_);
 }
 
 int RenderProcessHostImpl::GetNextRoutingID() {
@@ -1479,7 +1475,6 @@
     gpu_message_filter_ = NULL;
     message_port_message_filter_ = NULL;
     geolocation_dispatcher_host_ = NULL;
-    screen_orientation_dispatcher_host_ = NULL;
 
     // Remove ourself from the list of renderer processes so that we can't be
     // reused in between now and when the Delete task runs.
@@ -1867,7 +1862,6 @@
   gpu_message_filter_ = NULL;
   message_port_message_filter_ = NULL;
   geolocation_dispatcher_host_ = NULL;
-  screen_orientation_dispatcher_host_ = NULL;
 
   IDMap<IPC::Listener>::iterator iter(&listeners_);
   while (!iter.IsAtEnd()) {
@@ -1930,11 +1924,6 @@
     webrtc_log_message_callback_.Run(message);
 }
 #endif
-
-scoped_refptr<ScreenOrientationDispatcherHost>
-RenderProcessHostImpl::screen_orientation_dispatcher_host() const {
-  return make_scoped_refptr(screen_orientation_dispatcher_host_);
-}
 
 void RenderProcessHostImpl::OnShutdownRequest() {
   // Don't shut down if there are active RenderViews, or if there are pending