Remove Unused XR Consent Flow flag

Now that the XR Consent Flow has been removed, nothing checks this flag
(disabling it for tests) anymore. Remove the flag and the only place
that set it.

Bug: 1064384
Change-Id: Ie8568324c45288d7055a510b211290d6e2696699
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2220227
Commit-Queue: Alexander Cooper <alcooper@chromium.org>
Reviewed-by: Brian Sheedy <bsheedy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#773406}

chrome/common/chrome_switches.cc

@@ -237,11 +237,6 @@ const char kDisablePromptOnRepost[]         = "disable-prompt-on-repost";
 const char kDisableSearchGeolocationDisclosure[] =
     "disable-search-geolocation-disclosure";
 
-// Disables prompting the user for consent before fulfilling WebXR's
-// requestSession(). Use only when absolutely necessary, such as for perf tests.
-const char kDisableXrDeviceConsentPromptForTesting[] =
-    "disable-xr-device-consent-prompt-for-testing";
-
 // Some tests seem to require the application to close when the last
 // browser window is closed. Thus, we need a switch to force this behavior
 // for ChromeOS Aura, disable "zero window mode".

chrome/common/chrome_switches.h

@@ -79,7 +79,6 @@ extern const char kDisableExtensionsFileAccessCheck[];
 extern const char kDisablePrintPreview[];
 extern const char kDisablePromptOnRepost[];
 extern const char kDisableSearchGeolocationDisclosure[];
-extern const char kDisableXrDeviceConsentPromptForTesting[];
 extern const char kDisableZeroBrowsersOpenForTests[];
 extern const char kDiskCacheDir[];
 extern const char kDiskCacheSize[];

tools/perf/contrib/vr_benchmarks/shared_vr_page_state.py

@@ -18,8 +18,6 @@ from contrib.vr_benchmarks.desktop_runtimes import wmr_runtimes
 
 CARDBOARD_PATH = os.path.join('chrome', 'android', 'shared_preference_files',
                               'test', 'vr_cardboard_skipdon_setupcomplete.json')
-WEBXR_CONSENT_DIALOG_DISABLE_FLAG = (
-    '--disable-xr-device-consent-prompt-for-testing')
 
 
 class SharedVrPageStateFactory(shared_page_state.SharedPageState):
@@ -66,8 +64,6 @@ class _SharedVrPageState(shared_page_state.SharedPageState):
     super(_SharedVrPageState, self).__init__(
         test, finder_options, story_set, possible_browser)
     self._story_set = story_set
-    self._finder_options.AppendExtraBrowserArgs(
-        [WEBXR_CONSENT_DIALOG_DISABLE_FLAG])
 
   @property
   def recording_wpr(self):