Remove references to WebMidiClientMock from content/.

content/shell/renderer/test_runner/test_runner.cc

Index: content/shell/renderer/test_runner/test_runner.cc
diff --git a/content/shell/renderer/test_runner/test_runner.cc b/content/shell/renderer/test_runner/test_runner.cc
index ba78c8bae3ba425df22b1623d34787239d156d7a..0bf715a23c5294e8bdade7268bddc9c58e328119 100644
--- a/content/shell/renderer/test_runner/test_runner.cc
+++ b/content/shell/renderer/test_runner/test_runner.cc
@@ -41,7 +41,6 @@
 #include "third_party/WebKit/public/web/WebInputElement.h"
 #include "third_party/WebKit/public/web/WebKit.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
-#include "third_party/WebKit/public/web/WebMIDIClientMock.h"
 #include "third_party/WebKit/public/web/WebPageOverlay.h"
 #include "third_party/WebKit/public/web/WebScriptSource.h"
 #include "third_party/WebKit/public/web/WebSecurityPolicy.h"
@@ -1331,8 +1330,6 @@ void TestRunnerBindings::SetMIDIAccessorResult(bool result) {
 }
 
 void TestRunnerBindings::SetMIDISysexPermission(bool value) {
-  if (runner_)
-    runner_->SetMIDISysexPermission(value);
 }
 
 void TestRunnerBindings::GrantWebNotificationPermission(gin::Arguments* args) {
@@ -2838,11 +2835,6 @@ void TestRunner::SetMIDIAccessorResult(bool result) {
   midi_accessor_result_ = result;
 }
 
-void TestRunner::SetMIDISysexPermission(bool value) {
-  for (auto* window : test_interfaces_->GetWindowList())
-    window->GetMIDIClientMock()->setSysexPermission(value);
-}
-
 void TestRunner::GrantWebNotificationPermission(const GURL& origin,
                                                 bool permission_granted) {
   delegate_->GrantWebNotificationPermission(origin, permission_granted);