[DevTools] Switch from separate sendMessageToBackend method to using embedder.

Source/core/inspector/InspectorFrontendHost.cpp

Index: Source/core/inspector/InspectorFrontendHost.cpp
diff --git a/Source/core/inspector/InspectorFrontendHost.cpp b/Source/core/inspector/InspectorFrontendHost.cpp
index ec9c9ab28a63ead82c1c4f06925cdef61b92adf9..940e84260f752132864053e599d193ef82f7efaa 100644
--- a/Source/core/inspector/InspectorFrontendHost.cpp
+++ b/Source/core/inspector/InspectorFrontendHost.cpp
@@ -189,12 +189,6 @@ static String escapeUnicodeNonCharacters(const String& str)
     return dst.toString();
 }
 
-void InspectorFrontendHost::sendMessageToBackend(const String& message)
-{
-    if (m_client)
-        m_client->sendMessageToBackend(escapeUnicodeNonCharacters(message));
-}
-
 void InspectorFrontendHost::sendMessageToEmbedder(const String& message)
 {
     if (m_client)