Remove --enable-speech-synthesis flag.

content/public/common/content_switches.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/public/common/content_switches.h"
 
 #include "base/command_line.h"
 
 namespace switches {
 
@@ skipping 432 matching lines @@
 
 // Enables the Skia benchmarking extension
 const char kEnableSkiaBenchmarking[]        = "enable-skia-benchmarking";
 
 // On platforms that support it, enables smooth scroll animation.
 const char kEnableSmoothScrolling[]         = "enable-smooth-scrolling";
 
 // Enable spatial navigation
 const char kEnableSpatialNavigation[]       = "enable-spatial-navigation";
 
-// Enables the synthesis part of the Web Speech API.
-const char kEnableSpeechSynthesis[]         = "enable-speech-synthesis";
-
 // Enables StatsTable, logging statistics to a global named shared memory table.
 const char kEnableStatsTable[]              = "enable-stats-table";
 
 // Experimentally ensures that each renderer process:
 // 1) Only handles rendering for pages from a single site, apart from iframes.
 // (Note that a page can reference content from multiple origins due to images,
 // JavaScript files, etc.  Cross-site iframes are also loaded in-process.)
 // 2) Only has authority to see or use cookies for the page's top-level origin.
 // (So if a.com iframes b.com, the b.com network request will be sent without
 // cookies.)
@@ skipping 478 matching lines @@
 // Enable the Win32K process mitigation policy for renderer processes which
 // prevents them from invoking user32 and gdi32 system calls which enter
 // the kernel. This is only supported on Windows 8 and beyond.
 const char kEnableWin32kRendererLockDown[]
     = "enable_win32k_renderer_lockdown";
 #endif
 
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches