content: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

content/shell/renderer/test_runner/mock_screen_orientation_client.cc

Index: content/shell/renderer/test_runner/mock_screen_orientation_client.cc
diff --git a/content/shell/renderer/test_runner/mock_screen_orientation_client.cc b/content/shell/renderer/test_runner/mock_screen_orientation_client.cc
index 04b471096654da64f5ca4077ffadad59419533a3..56dd73c696f8966483864628cf9da051459f6905 100644
--- a/content/shell/renderer/test_runner/mock_screen_orientation_client.cc
+++ b/content/shell/renderer/test_runner/mock_screen_orientation_client.cc
@@ -5,8 +5,10 @@
 #include "content/shell/renderer/test_runner/mock_screen_orientation_client.h"
 
 #include "base/bind.h"
+#include "base/location.h"
 #include "base/logging.h"
-#include "base/message_loop/message_loop.h"
+#include "base/single_thread_task_runner.h"
+#include "base/thread_task_runner_handle.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 
 namespace content {
@@ -109,19 +111,15 @@ bool MockScreenOrientationClient::IsOrientationAllowedByCurrentLock(
 void MockScreenOrientationClient::lockOrientation(
     blink::WebScreenOrientationLockType orientation,
     blink::WebLockOrientationCallback* callback) {
-  base::MessageLoop::current()->PostTask(
-      FROM_HERE,
-      base::Bind(&MockScreenOrientationClient::UpdateLockSync,
-                 base::Unretained(this),
-                 orientation,
-                 callback));
+  base::ThreadTaskRunnerHandle::Get()->PostTask(
+      FROM_HERE, base::Bind(&MockScreenOrientationClient::UpdateLockSync,
+                            base::Unretained(this), orientation, callback));
 }
 
 void MockScreenOrientationClient::unlockOrientation() {
-  base::MessageLoop::current()->PostTask(
-      FROM_HERE,
-      base::Bind(&MockScreenOrientationClient::ResetLockSync,
-                 base::Unretained(this)));
+  base::ThreadTaskRunnerHandle::Get()->PostTask(
+      FROM_HERE, base::Bind(&MockScreenOrientationClient::ResetLockSync,
+                            base::Unretained(this)));
 }
 
 void MockScreenOrientationClient::UpdateLockSync(