Move ScopedIPCSupport to mojo/edk/embedder and the mojo::edk namespace.

content/child/child_thread_impl.h

Index: content/child/child_thread_impl.h
diff --git a/content/child/child_thread_impl.h b/content/child/child_thread_impl.h
index 002f753e1a10c81f161f026e359acadaa6410903..7429963603d0e7cff3074bbe29ea70ce5414c3ab 100644
--- a/content/child/child_thread_impl.h
+++ b/content/child/child_thread_impl.h
@@ -31,11 +31,16 @@ class MessageLoop;
 
 namespace IPC {
 class MessageFilter;
-class ScopedIPCSupport;
 class SyncChannel;
 class SyncMessageFilter;
 }  // namespace IPC
 
+namespace mojo {
+namespace edk {
+class ScopedIPCSupport;
+}  // namespace edk
+}  // namespace mojo
+
 namespace blink {
 class WebFrame;
 }  // namespace blink
@@ -243,7 +248,7 @@ class CONTENT_EXPORT ChildThreadImpl
 
   void EnsureConnected();
 
-  std::unique_ptr<IPC::ScopedIPCSupport> mojo_ipc_support_;
+  std::unique_ptr<mojo::edk::ScopedIPCSupport> mojo_ipc_support_;
   std::unique_ptr<MojoApplication> mojo_application_;
 
   std::string channel_name_;