WIP cc: remove unused and legacy GetMappedMemoryLimit code.

cc/test/test_web_graphics_context_3d.h

Index: cc/test/test_web_graphics_context_3d.h
diff --git a/cc/test/test_web_graphics_context_3d.h b/cc/test/test_web_graphics_context_3d.h
index 9aabf0d4433a43137f173289cb21e160b39ee45a..ffab76ca07f3131f7a5913daa62c9a5ae51e1e4c 100644
--- a/cc/test/test_web_graphics_context_3d.h
+++ b/cc/test/test_web_graphics_context_3d.h
@@ -359,11 +359,6 @@ class TestWebGraphicsContext3D {
   virtual GLuint NextRenderbufferId();
   virtual void RetireRenderbufferId(GLuint id);
 
-  void SetMaxTransferBufferUsageBytes(size_t max_transfer_buffer_usage_bytes);
-  size_t max_used_transfer_buffer_usage_bytes() const {
-    return max_used_transfer_buffer_usage_bytes_;
-  }
-
   void SetMaxSamples(int max_samples);
   void set_test_support(TestContextSupport* test_support) {
     test_support_ = test_support;