Add TestingInstance::EvalScript method which posts a message that the test page can eval().

ppapi/api/dev/ppb_testing_dev.idl

Index: ppapi/api/dev/ppb_testing_dev.idl
===================================================================
--- ppapi/api/dev/ppb_testing_dev.idl	(revision 114053)
+++ ppapi/api/dev/ppb_testing_dev.idl	(working copy)
@@ -11,7 +11,8 @@
 
 label Chrome {
   M14 = 0.7,
-  M15 = 0.8
+  M15 = 0.8,
+  M18 = 0.9
 };
 
 interface PPB_Testing_Dev {
@@ -102,4 +103,27 @@
   [version=0.8]
   void SimulateInputEvent([in] PP_Instance instance,
                           [in] PP_Resource input_event);
+
+  /**
+   * ExecuteScript is a pointer to a function that executes the given
+   * script in the context of the frame containing the module.
+   *
+   * The exception, if any, will be returned in *exception. As with the PPB_Var

[dmichael (off chromium), 2011/12/13 23:40:55]

I'm not sure what this has to do with the PPB_Var interface. Assuming it was
copy/pasted, and the source should've said PPB_Var_Deprecated.

[bbudge, 2011/12/14 03:00:05]

Done.

+   * interface, the exception parameter, if non-NULL, must be initialized
+   * to a void exception or the function will immediately return. On success,
+   * the exception parameter will be set to a "void" var. On failure, the
+   * return value will be a "void" var.
+   *
+   * @param[in] script A string containing the JavaScript to execute.
+   * @param[in/out] exception PP_Var containing the exception. Initialize
+   * this to NULL if you don't want exception info; initialize this to a void
+   * exception if want exception info.
+   *
+   * @return The result of the script execution, or a "void" var
+   * if execution failed.
+   */
+  [version=0.9]
+  PP_Var ExecuteScript([in] PP_Instance instance,
+                       [in] PP_Var script,
+                       [out] PP_Var exception);
 };