Disables Live Caption feature.

We need to follow up on this to proxy component download and also fiture
out API keys maybe as it currently doesn't work.

Chromium change:

https://source.chromium.org/chromium/chromium/src/+/9b46507cf5a5ee1460dc9c20307206d7cb004a2f

commit 9b46507cf5a5ee1460dc9c20307206d7cb004a2f
Author: evliu <evliu@google.com>
Date:   Fri Mar 5 00:49:23 2021 +0000

    Enable the Live Caption feature by default

    This CL enables the LiveCaption, UseSodaForLiveCaption, and IPH_LiveCaption features by default.

    Bug: 1182008

app/DEPS

@@ -29,6 +29,7 @@ include_rules = [
   "+components/dom_distiller/core/dom_distiller_switches.h",
   "+google_apis/gaia",
   "+gpu/config",
+  "+media/base/media_switches.h",
   "+services/device",
   "+services/network",
   "-third_party/blink",

app/brave_main_delegate.cc

@@ -44,6 +44,7 @@
 #include "content/public/common/content_features.h"
 #include "content/public/common/content_switches.h"
 #include "google_apis/gaia/gaia_switches.h"
+#include "media/base/media_switches.h"
 #include "net/base/features.h"
 #include "services/device/public/cpp/device_features.h"
 #include "services/network/public/cpp/features.h"
@@ -226,6 +227,7 @@ bool BraveMainDelegate::BasicStartupComplete(int* exit_code) {
     features::kWebOTP.name,
     federated_learning::kFederatedLearningOfCohorts.name,
     federated_learning::kFlocIdComputedEventLogging.name,
+    media::kLiveCaption.name,
     net::features::kFirstPartySets.name,
     network::features::kTrustTokens.name,
     network_time::kNetworkTimeServiceQuerying.name,

app/brave_main_delegate_browsertest.cc

@@ -24,6 +24,7 @@
 #include "content/public/common/content_features.h"
 #include "content/public/test/browser_test.h"
 #include "gpu/config/gpu_finch_features.h"
+#include "media/base/media_switches.h"
 #include "net/base/features.h"
 #include "services/device/public/cpp/device_features.h"
 #include "services/network/public/cpp/features.h"
@@ -84,6 +85,7 @@ IN_PROC_BROWSER_TEST_F(BraveMainDelegateBrowserTest, DisabledFeatures) {
       &federated_learning::kFederatedLearningOfCohorts,
       &federated_learning::kFlocIdComputedEventLogging,
       &kEnableProfilePickerOnStartupFeature,
+      &media::kLiveCaption,
       &net::features::kFirstPartySets,
       &network::features::kTrustTokens,
       &network_time::kNetworkTimeServiceQuerying,

chromium_src/chrome/app/BUILD.gn

@@ -5,6 +5,7 @@
 
 group("app") {
   deps = [
-    "//google_apis"
+    "//google_apis",
+    "//media",
   ]
 }