Add fiat actions to metamask controllere and actions.

app/scripts/metamask-controller.js

@@ -39,6 +39,7 @@ module.exports = class MetamaskController {
       setProviderType: this.setProviderType.bind(this),
       useEtherscanProvider: this.useEtherscanProvider.bind(this),
       agreeToDisclaimer: this.agreeToDisclaimer.bind(this),
+      setCurrentFiat: this.setCurrentFiat.bind(this),
       // forward directly to idStore
       createNewVault: idStore.createNewVault.bind(idStore),
       recoverFromSeed: idStore.recoverFromSeed.bind(idStore),
@@ -236,6 +237,15 @@ module.exports = class MetamaskController {
     }
   }
 
+  setCurrentFiat (fiat, cb) {
+    try {
+      this.configManager.setCurrentFiat(fiat)
+      this.configManager.setConversionRate()
+    } catch (e) {
+      cb(e)
+    }
+  }
+
   // called from popup
   setRpcTarget (rpcTarget) {
     this.configManager.setRpcTarget(rpcTarget)

ui/app/actions.js

@@ -55,6 +55,8 @@ var actions = {
   SHOW_CONF_MSG_PAGE: 'SHOW_CONF_MSG_PAGE',
   REVEAL_ACCOUNT: 'REVEAL_ACCOUNT',
   revealAccount: revealAccount,
+  SET_CURRENT_FIAT:  'SET_CURRENT_FIAT',
+  setCurrentFiat: setCurrentFiat,
   // account detail screen
   SHOW_SEND_PAGE: 'SHOW_SEND_PAGE',
   showSendPage: showSendPage,
@@ -207,6 +209,18 @@ function revealAccount () {
   }
 }
 
+function setCurrentFiat (fiat) {
+  return (dispatch) => {
+    dispatch(this.showLoadingIndication())
+    _accountManager.setCurrentFiat(fiat, (err) => {
+      dispatch(this.hideLoadingIndication())
+      dispatch({
+        type: this.SET_CURRENT_FIAT,
+      })
+    })
+  }
+}
+
 function signMsg (msgData) {
   return (dispatch) => {
     dispatch(actions.showLoadingIndication())