Add ComponentInstallationError enum to media_perception_private IDL.

In order to have a better understanding why the component sometimes
fails to install on devices in production, we want to propagate error
codes to clients of the setAnalyticsComponent API.

Bug: 1003037
Change-Id: Ie57417a81d7556dd51f9b2f7e8db96e8fc695516
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1797467
Commit-Queue: Luke Sorenson <lasoren@chromium.org>
Reviewed-by: Toni Baržić <tbarzic@chromium.org>
Cr-Commit-Position: refs/heads/master@{#700477}

extensions/common/api/media_perception_private.idl

@@ -94,6 +94,26 @@ namespace mediaPerceptionPrivate {
     FAILED_TO_INSTALL
   };
 
+  // Error code associated with a failure to install the media analytics
+  // component.
+  enum ComponentInstallationError {
+    // Component requested does not exist.
+    UNKNOWN_COMPONENT,
+
+    // The update engine fails to install component.
+    INSTALL_FAILURE,
+
+    // Component can not be mounted.
+    MOUNT_FAILURE,
+
+    // The component is not compatible with the device.
+    COMPATIBILITY_CHECK_FAILED,
+
+    // The component was not found - reported for load requests with kSkip
+    // update policy.
+    NOT_FOUND
+  };
+
   dictionary Component {
     ComponentType type;
   };
@@ -104,6 +124,10 @@ namespace mediaPerceptionPrivate {
 
     // The version string for the current component.
     DOMString? version;
+
+    // If the component installation failed, the encountered installation
+    // error. Not set if the component installation succeeded.
+    ComponentInstallationError? installationErrorCode;
   };
 
   // ------------------- Start of process management definitions. ------------