Fix some minor gl/gpu comment errors

Change-Id: Icb87787c40cbc263addffcc63b9b9d09074bf504
Bug: None
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1865675
Auto-Submit: Kai Ninomiya <kainino@chromium.org>
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Commit-Queue: Kai Ninomiya <kainino@chromium.org>
Cr-Commit-Position: refs/heads/master@{#706718}

gpu/command_buffer/tests/gl_ext_window_rectangles_unittest.cc

@@ -13,7 +13,7 @@
 
 namespace gpu {
 
-// A collection of tests that exercise the GL_EXT_srgb extension.
+// A collection of tests that exercise the GL_EXT_window_rectangles extension.
 class GLEXTWindowRectanglesTest : public testing::Test {
  protected:
   void SetUp() override {

ui/gl/init/create_gr_gl_interface.cc

@@ -660,7 +660,7 @@ sk_sp<GrGLInterface> CreateGrGLInterface(
   // GL_EXT_window_rectangles
   functions->fWindowRectangles = gl->glWindowRectanglesEXTFn;
 
-  // EXT_window_rectangles
+  // GL_QCOM_tiled_rendering
   functions->fStartTiling = gl->glStartTilingQCOMFn;
   functions->fEndTiling = gl->glEndTilingQCOMFn;