getParamsForGasEstimate extracts symbol from token instead of just accepting symbol.

ui/app/actions.js

@@ -760,8 +760,7 @@ function setGasTotal (gasTotal) {
 
 function getGasEstimate ({ selectedAddress, selectedToken, data }) {
   return (dispatch) => {
-    const { symbol } = selectedToken || {}
-    const estimateGasParams = getParamsForGasEstimate(selectedAddress, symbol, data)
+    const estimateGasParams = getParamsForGasEstimate(selectedAddress, selectedToken, data)
     return Promise.all([
       dispatch(actions.getGasPrice()),
       dispatch(actions.estimateGas(estimateGasParams)),

ui/app/components/send_/send.utils.js

@@ -139,7 +139,8 @@ function getAmountErrorObject ({
   return { amount: amountError }
 }
 
-function getParamsForGasEstimate (selectedAddress, symbol, data) {
+function getParamsForGasEstimate (selectedAddress, selectedToken, data) {
+  const { symbol } = selectedToken || {}
   const estimatedGasParams = {
     from: selectedAddress,
     gas: '746a528800',

ui/app/components/send_/tests/send-utils.test.js

@@ -147,9 +147,9 @@ describe('send utils', () => {
       )
     })
 
-    it('should return value property if symbol provided', () => {
+    it('should return value property if selected token provided', () => {
       assert.deepEqual(
-        getParamsForGasEstimate('mockAddress', 'ABC'),
+        getParamsForGasEstimate('mockAddress', { symbol: 'ABC' }),
         {
           from: 'mockAddress',
           gas: '746a528800',
@@ -160,7 +160,7 @@ describe('send utils', () => {
 
     it('should return data property if data provided', () => {
       assert.deepEqual(
-        getParamsForGasEstimate('mockAddress', 'ABC', 'somedata'),
+        getParamsForGasEstimate('mockAddress', { symbol: 'ABC' }, 'somedata'),
         {
           from: 'mockAddress',
           gas: '746a528800',