Move existing Mojo JS <--> CPP tests out of webui test harness.

content/test/data/web_ui_test_mojo_bindings.mojom

Index: content/test/data/web_ui_test_mojo_bindings.mojom
diff --git a/content/test/data/web_ui_test_mojo_bindings.mojom b/content/test/data/web_ui_test_mojo_bindings.mojom
index 9ffd38529a320397c935a60339094bc5459d1f67..67d5983fee4a84306e48cac28c79fffe2463b519 100644
--- a/content/test/data/web_ui_test_mojo_bindings.mojom
+++ b/content/test/data/web_ui_test_mojo_bindings.mojom
@@ -1,36 +1,13 @@
 module mojo {
 
-// This struct encompasses all of the basic types, so that they
-// may be sent from C++ to JS and back for validation.
-struct EchoArgs {
-  int64 si64;
-  int32 si32;
-  int16 si16;
-  int8  si8;
-  uint64 ui64;
-  uint32 ui32;
-  uint16 ui16;
-  uint8  ui8;
-  float float_val;
-  float float_inf;
-  float float_nan;
-  double double_val;
-  double double_inf;
-  double double_nan;
-  string name;
-  string[] string_array;
-};
-
 [Peer=RendererTarget]
 interface BrowserTarget {
   PingResponse();
-  EchoResponse(EchoArgs arg1, EchoArgs arg2);
 };
 
 [Peer=BrowserTarget]
 interface RendererTarget {
   Ping();
-  Echo(EchoArgs arg);
 };
 
 }