Remove kReduceSecurityForTesting command line argument

Previously, the "reduce-security-for-testing" flag was used by autofill
and an Android media playback codepath to workaround limitations in test
code. Everything that previously checked this flag is now gone and now
the flag itself can be removed.

Bug: 770356
Change-Id: I414d55a88d39c5f1116a4d9cf96682fd648b7089
Reviewed-on: https://chromium-review.googlesource.com/693289
Commit-Queue: Eric Lawrence <elawrence@chromium.org>
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Cr-Commit-Position: refs/heads/master@{#509485}

chrome/browser/ui/startup/bad_flags_prompt.cc

@@ -106,7 +106,6 @@ void ShowBadFlagsPrompt(Browser* browser) {
 #endif
     switches::kIgnoreCertificateErrors,
     switches::kIgnoreCertificateErrorsSPKIList,
-    switches::kReduceSecurityForTesting,
     invalidation::switches::kSyncAllowInsecureXmppConnection,
 
     // These flags change the URLs that handle PII.

content/browser/renderer_host/render_process_host_impl.cc

@@ -2611,7 +2611,6 @@ void RenderProcessHostImpl::PropagateBrowserCommandLineToRenderer(
     switches::kPassiveListenersDefault,
     switches::kPpapiInProcess,
     switches::kReducedReferrerGranularity,
-    switches::kReduceSecurityForTesting,
     switches::kRegisterPepperPlugins,
     switches::kRendererStartupDialog,
     switches::kRootLayerScrolls,

content/public/common/content_switches.cc

@@ -755,10 +755,6 @@ const char kProxyServer[] = "proxy-server";
 // Defaults to disabled.
 const char kPullToRefresh[] = "pull-to-refresh";
 
-// Enables more web features over insecure connections. Designed to be used
-// for testing purposes only.
-const char kReduceSecurityForTesting[]      = "reduce-security-for-testing";
-
 // Register Pepper plugins (see pepper_plugin_list.cc for its format).
 const char kRegisterPepperPlugins[]         = "register-pepper-plugins";
 

content/public/common/content_switches.h

@@ -211,7 +211,6 @@ CONTENT_EXPORT extern const char kProcessPerTab[];
 CONTENT_EXPORT extern const char kProcessType[];
 CONTENT_EXPORT extern const char kProxyServer[];
 CONTENT_EXPORT extern const char kPullToRefresh[];
-CONTENT_EXPORT extern const char kReduceSecurityForTesting[];
 CONTENT_EXPORT extern const char kReducedReferrerGranularity[];
 CONTENT_EXPORT extern const char kRegisterPepperPlugins[];
 CONTENT_EXPORT extern const char kRemoteDebuggingPort[];

tools/perf/benchmarks/blink_perf.py

@@ -248,9 +248,7 @@ class _BlinkPerfMeasurement(legacy_page_test.LegacyPageTest):
         # reference builds.
         # --disable-gesture-requirement-for-media-playback is the old one and
         # can be removed after M60 goes to stable.
-        '--enable-experimental-canvas-features',
-        # TODO(qinmin): After fixing crbug.com/592017, remove this command line.
-        '--reduce-security-for-testing'
+        '--enable-experimental-canvas-features'
     ])
 
   def SetOptions(self, options):