Revert 119198 - First pass at implementing the MessageLoop interface.…

… This includes a simple

example and a helper class. The current example just asserts due to thread
checks we have in there now, but this should provide a good starting point.

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9097006

TBR=brettw@chromium.org
Review URL: https://chromiumcodereview.appspot.com/9290040

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@119200 0039d316-1c4b-4281-b951-d872f2087c98

ppapi/ppapi_proxy.gypi

@@ -99,8 +99,6 @@
         'proxy/ppb_image_data_proxy.h',
         'proxy/ppb_instance_proxy.cc',
         'proxy/ppb_instance_proxy.h',
-        'proxy/ppb_message_loop_proxy.cc',
-        'proxy/ppb_message_loop_proxy.h',
         'proxy/ppb_pdf_proxy.cc',
         'proxy/ppb_pdf_proxy.h',
         'proxy/ppb_tcp_socket_private_proxy.cc',

ppapi/ppapi_shared.gypi

@@ -198,7 +198,6 @@
         'thunk/ppb_instance_thunk.cc',
         'thunk/ppb_layer_compositor_api.h',
         'thunk/ppb_layer_compositor_thunk.cc',
-        'thunk/ppb_message_loop_api.h',
         'thunk/ppb_messaging_thunk.cc',
         'thunk/ppb_mouse_lock_thunk.cc',
         'thunk/ppb_pdf_api.h',

ppapi/ppapi_sources.gypi

@@ -267,8 +267,6 @@
       'utility/graphics/paint_aggregator.h',
       'utility/graphics/paint_manager.cc',
       'utility/graphics/paint_manager.h',
-      'utility/threading/simple_thread.cc',
-      'utility/threading/simple_thread.h',
     ],
     #
     # Common Testing source for trusted and untrusted (NaCl) pugins.

ppapi/proxy/interface_list.cc

@@ -17,7 +17,6 @@
 #include "ppapi/c/dev/ppb_gles_chromium_texture_mapping_dev.h"
 #include "ppapi/c/dev/ppb_ime_input_event_dev.h"
 #include "ppapi/c/dev/ppb_memory_dev.h"
-#include "ppapi/c/dev/ppb_message_loop_dev.h"
 #include "ppapi/c/dev/ppb_resource_array_dev.h"
 #include "ppapi/c/dev/ppb_testing_dev.h"
 #include "ppapi/c/dev/ppb_text_input_dev.h"
@@ -81,7 +80,6 @@
 #include "ppapi/proxy/ppb_graphics_3d_proxy.h"
 #include "ppapi/proxy/ppb_image_data_proxy.h"
 #include "ppapi/proxy/ppb_instance_proxy.h"
-#include "ppapi/proxy/ppb_message_loop_proxy.h"
 #include "ppapi/proxy/ppb_pdf_proxy.h"
 #include "ppapi/proxy/ppb_tcp_socket_private_proxy.h"
 #include "ppapi/proxy/ppb_testing_proxy.h"
@@ -171,8 +169,6 @@ InterfaceList::InterfaceList() {
   AddProxy(API_ID_PPP_CLASS, &PPP_Class_Proxy::Create);
   AddPPB(PPB_CORE_INTERFACE_1_0, API_ID_PPB_CORE,
          PPB_Core_Proxy::GetPPB_Core_Interface());
-  AddPPB(PPB_MESSAGELOOP_DEV_INTERFACE_0_1, API_ID_NONE,
-         PPB_MessageLoop_Proxy::GetInterface());
   AddPPB(PPB_OPENGLES2_INTERFACE_1_0, API_ID_NONE,
          PPB_OpenGLES2_Shared::GetInterface());
   AddPPB(PPB_VAR_INTERFACE_1_1, API_ID_NONE,