Allow textures to be moved from one GL context group to another.

gpu/command_buffer_service.gypi

Index: gpu/command_buffer_service.gypi
===================================================================
--- gpu/command_buffer_service.gypi	(revision 133771)
+++ gpu/command_buffer_service.gypi	(working copy)
@@ -15,6 +15,7 @@
   },
   'dependencies': [
     '../base/base.gyp:base',
+    '../crypto/crypto.gyp:crypto',
     '../ui/gfx/gl/gl.gyp:gl',
     '../ui/gfx/surface/surface.gyp:surface',
     '../ui/ui.gyp:ui',
@@ -53,6 +54,8 @@
     'command_buffer/service/gpu_switches.cc',
     'command_buffer/service/id_manager.h',
     'command_buffer/service/id_manager.cc',
+    'command_buffer/service/mailbox_manager.cc',
+    'command_buffer/service/mailbox_manager.h',
     'command_buffer/service/mocks.h',
     'command_buffer/service/program_manager.h',
     'command_buffer/service/program_manager.cc',
@@ -66,6 +69,8 @@
     'command_buffer/service/shader_translator.cc',
     'command_buffer/service/stream_texture.h',
     'command_buffer/service/stream_texture_manager.h',
+    'command_buffer/service/texture_definition.cc',
+    'command_buffer/service/texture_definition.h',
     'command_buffer/service/texture_manager.h',
     'command_buffer/service/texture_manager.cc',
     'command_buffer/service/vertex_attrib_manager.h',