Remove enable_web_speech flag.

chrome/test/BUILD.gn

Index: chrome/test/BUILD.gn
diff --git a/chrome/test/BUILD.gn b/chrome/test/BUILD.gn
index 95347be761a95d3cf46d1cba8d869df0eca9bbf8..33f46f716e6b191eac449dd4cd22c32a990d88ba 100644
--- a/chrome/test/BUILD.gn
+++ b/chrome/test/BUILD.gn
@@ -1287,7 +1287,7 @@ test("browser_tests") {
     ]
 
     enable_multidex = true
-  } else {
+  } else {  # Not Android.
     sources += [
       # The list of sources which is only used by chrome browser tests on
       # desktop platforms.
@@ -1696,6 +1696,11 @@ test("browser_tests") {
       "../browser/sessions/session_restore_browsertest_chromeos.cc",
       "../browser/sessions/tab_restore_browsertest.cc",
       "../browser/site_details_browsertest.cc",
+
+      # If this list is used on Android in the future, these browser/speech/*
+      # files will probably not be applicable.
+      "../browser/speech/extension_api/tts_extension_apitest.cc",
+      "../browser/speech/speech_recognition_browsertest.cc",
       "../browser/spellchecker/spellcheck_service_browsertest.cc",
       "../browser/ssl/captive_portal_blocking_page_browsertest.cc",
       "../browser/ssl/cert_verifier_browser_test.cc",
@@ -2372,12 +2377,6 @@ test("browser_tests") {
             [ "../browser/ui/views/ime/input_ime_apitest_nonchromeos.cc" ]
       }
     }
-    if (enable_web_speech) {
-      sources += [
-        "../browser/speech/extension_api/tts_extension_apitest.cc",
-        "../browser/speech/speech_recognition_browsertest.cc",
-      ]
-    }
     if (safe_browsing_mode == 1) {
       sources += [
         "../browser/safe_browsing/permission_reporter_browsertest.cc",
@@ -3608,6 +3607,8 @@ test("unit_tests") {
       # GCMDriverAndroid is not yet implemented.
       "../browser/services/gcm/gcm_profile_service_unittest.cc",
       "../browser/sessions/persistent_tab_restore_service_unittest.cc",
+      "../browser/speech/extension_api/extension_manifests_tts_unittest.cc",
+      "../browser/speech/tts_controller_unittest.cc",
       "../browser/sync/sessions/sessions_sync_manager_unittest.cc",
       "../browser/sync/sync_ui_util_unittest.cc",  # Sync setup uses native ui.
       "../browser/translate/translate_manager_render_view_host_unittest.cc",
@@ -4198,12 +4199,6 @@ test("unit_tests") {
       "../browser/printing/cloud_print/privet_url_fetcher_unittest.cc",
     ]
   }
-  if (enable_web_speech) {
-    sources += [
-      "../browser/speech/extension_api/extension_manifests_tts_unittest.cc",
-      "../browser/speech/tts_controller_unittest.cc",
-    ]
-  }
 
   if (safe_browsing_mode > 0) {
     sources += [