Add ShareGroup to GLES2Implemenation

gpu/command_buffer/client/gles2_implementation.cc

Index: gpu/command_buffer/client/gles2_implementation.cc
diff --git a/gpu/command_buffer/client/gles2_implementation.cc b/gpu/command_buffer/client/gles2_implementation.cc
index cf55bb1771ccadd6795c3fbfd6466d42270b48fc..06aa79e0f2f8bb12915ba004ce3e561de029fbff 100644
--- a/gpu/command_buffer/client/gles2_implementation.cc
+++ b/gpu/command_buffer/client/gles2_implementation.cc
@@ -13,6 +13,7 @@
 #include "../client/mapped_memory.h"
 #include "../client/program_info_manager.h"
 #include "../client/query_tracker.h"
+#include "../client/share_group.h"
 #include "../client/transfer_buffer.h"
 #include "../common/gles2_cmd_utils.h"
 #include "../common/id_allocator.h"
@@ -575,6 +576,7 @@ GLES2Implementation::SingleThreadChecker::~SingleThreadChecker() {
 
 GLES2Implementation::GLES2Implementation(
       GLES2CmdHelper* helper,
+      ShareGroup* share_group,
       TransferBufferInterface* transfer_buffer,
       bool share_resources,
       bool bind_generates_resource)
@@ -606,6 +608,8 @@ GLES2Implementation::GLES2Implementation(
         switches::kEnableGPUClientLogging);
   });
 
+  share_group_ = (share_group ? share_group : new ShareGroup());
+
   memset(&reserved_ids_, 0, sizeof(reserved_ids_));
 }