Remove default textures in (!bind_generates_resource) context groups.

gpu/command_buffer/service/texture_manager.h

Index: gpu/command_buffer/service/texture_manager.h
diff --git a/gpu/command_buffer/service/texture_manager.h b/gpu/command_buffer/service/texture_manager.h
index 214122eccc4641cc8e595f078edd7dfd4ab5639f..8513264413cf87b93f9879fcfb1594407d794bfa 100644
--- a/gpu/command_buffer/service/texture_manager.h
+++ b/gpu/command_buffer/service/texture_manager.h
@@ -481,7 +481,8 @@ class GPU_EXPORT TextureManager {
   TextureManager(MemoryTracker* memory_tracker,
                  FeatureInfo* feature_info,
                  GLsizei max_texture_size,
-                 GLsizei max_cube_map_texture_size);
+                 GLsizei max_cube_map_texture_size,
+                 bool use_default_textures);
   ~TextureManager();
 
   void set_framebuffer_manager(FramebufferManager* manager) {
@@ -774,6 +775,8 @@ class GPU_EXPORT TextureManager {
   GLint max_levels_;
   GLint max_cube_map_levels_;
 
+  const bool use_default_textures_;
+
   int num_unrenderable_textures_;
   int num_unsafe_textures_;
   int num_uncleared_mips_;