Updated demo to use resizable plugin element. This exercises the new PPB_Graphics3D_Dev::Resize()...

gpu/demos/gles2_book/example.h

Index: gpu/demos/gles2_book/example.h
===================================================================
--- gpu/demos/gles2_book/example.h	(revision 94518)
+++ gpu/demos/gles2_book/example.h	(working copy)
@@ -51,8 +51,6 @@
     // Note that update_func is optional.
     assert(init_func_ && draw_func_ && shut_down_func_);
 
-    context_.width = width();
-    context_.height = height();
     if (!init_func_(&context_)) return false;
     return true;
   }
@@ -69,6 +67,9 @@
   }
 
   virtual void Render(float elapsed_sec) {
+    context_.width = width();
+    context_.height = height();
+
     if (update_func_) update_func_(&context_, elapsed_sec);
     draw_func_(&context_);
   }