Roll WebGL 582169b..65c5e7b

https://chromium.googlesource.com/external/khronosgroup/webgl.git/+log/582169b..65c5e7b

BUG=563852

TEST=bots

CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.win:win_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2339603004
Cr-Commit-Position: refs/heads/master@{#418693}

DEPS

@@ -183,7 +183,7 @@ deps = {
     Var('chromium_git') + '/external/bidichecker/lib.git' + '@' + '97f2aa645b74c28c57eca56992235c79850fa9e0',
 
   'src/third_party/webgl/src':
-   Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + '582169b7e3864a27e50ce0c07c9c346cb267f94c',
+   Var('chromium_git') + '/external/khronosgroup/webgl.git' + '@' + '65c5e7b16e98cbb998f742c45f9233f6f038c5c6',
 
   'src/third_party/webdriver/pylib':
     Var('chromium_git') + '/external/selenium/py.git' + '@' + '5fd78261a75fe08d27ca4835fb6c5ce4b42275bd',