Add interface to set the sub resource crash key from Flash

ppapi/c/private/ppb_flash.h

 /* Copyright (c) 2012 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 /* From private/ppb_flash.idl modified Thu Mar 28 10:30:53 2013. */
 
 #ifndef PPAPI_C_PRIVATE_PPB_FLASH_H_
 #define PPAPI_C_PRIVATE_PPB_FLASH_H_
 
@@ skipping 100 matching lines @@
 } PP_FlashSetting;
 PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_FlashSetting, 4);
 
 /**
  * This enum provides keys for setting breakpad crash report data.
  */
 typedef enum {
   /**
    * Specifies the document URL which contains the flash instance.
    */
-  PP_FLASHCRASHKEY_URL = 1
+  PP_FLASHCRASHKEY_URL = 1,
+  /**
+   * Specifies the document URL which contains the flash instance.
+   */
+  PP_FLASHCRASHKEY_RESOURCE_URL = 2
 } PP_FlashCrashKey;
 PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_FlashCrashKey, 4);
 /**
  * @}
  */
 
 /**
  * @addtogroup Interfaces
  * @{
  */
@@ skipping 201 matching lines @@
   int32_t (*EnumerateVideoCaptureDevices)(PP_Instance instance,
                                           PP_Resource video_capture,
                                           struct PP_ArrayOutput devices);
 };
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_PRIVATE_PPB_FLASH_H_ */