Add the necessary plumbing mechanisms to ensure proper WebGL support inside the <browser> tag, whic…

ppapi/shared_impl/ppb_graphics_3d_shared.cc

Index: ppapi/shared_impl/ppb_graphics_3d_shared.cc
diff --git a/ppapi/shared_impl/ppb_graphics_3d_shared.cc b/ppapi/shared_impl/ppb_graphics_3d_shared.cc
index c5397040497157a8d6c9176edec5d39a65c1d882..3a562f4392e3b6d05c792be89cdfc0a16ff3d377 100644
--- a/ppapi/shared_impl/ppb_graphics_3d_shared.cc
+++ b/ppapi/shared_impl/ppb_graphics_3d_shared.cc
@@ -97,8 +97,10 @@ bool PPB_Graphics3D_Shared::HasPendingSwap() const {
   return TrackedCallback::IsPending(swap_callback_);
 }
 
-bool PPB_Graphics3D_Shared::CreateGLES2Impl(int32 command_buffer_size,
-                                            int32 transfer_buffer_size) {
+bool PPB_Graphics3D_Shared::CreateGLES2Impl(
+    int32 command_buffer_size,
+    int32 transfer_buffer_size,
+    gpu::gles2::GLES2Implementation* share_gles2) {
   gpu::CommandBuffer* command_buffer = GetCommandBuffer();
   DCHECK(command_buffer);
 
@@ -116,7 +118,7 @@ bool PPB_Graphics3D_Shared::CreateGLES2Impl(int32 command_buffer_size,
   // Create the object exposing the OpenGL API.
   gles2_impl_.reset(new gpu::gles2::GLES2Implementation(
       gles2_helper_.get(),
-      NULL,
+      share_gles2 ? share_gles2->share_group() : NULL,
       transfer_buffer_.get(),
       false,
       true));