Fix eglPresentationTimeANDROID is no effective

shell/platform/android/android_environment_gl.cc

@@ -20,11 +20,24 @@ AndroidEnvironmentGL::AndroidEnvironmentGL()
     return;
   }
 
+  // See if we can use the EGL_ANDROID_presentation_time extension. This
+  // extension may be available from API18 onward.
+  // If this extension is available, it will be invoked with the target vsync
+  // for the current frame before calling eglSwapBuffers. This helps when the
+  // engine over-stuffs the buffer queue. This can happen when a frame goes over
+  // budget into the next vsync period, and a subsequent frame is quickly
+  // submitted in the same vsync period. Dequeuing buffers will then be slow
+  // until the engine stops submitting frames and lets the GPU catch up.
+  // However, using this extension means the SurfaceFlinger will only use the
+  // newest buffer for the current vsync, and the GPU and CPU will stay more
+  // in sync.
+  // See https://developer.android.com/games/sdk/frame-pacing for more
+  // details and diagrams.
   auto* extensions = eglQueryString(display_, EGL_EXTENSIONS);
   if (strstr(extensions, "EGL_ANDROID_presentation_time")) {
     presentation_time_proc_ =
         reinterpret_cast<PFNEGLPRESENTATIONTIMEANDROIDPROC>(
-            eglGetProcAddress("sEGL_ANDROID_presentation_time"));
+            eglGetProcAddress("eglPresentationTimeANDROID"));
   }
 
   valid_ = true;