MAGETWO-51604: [TD] Add functionality to save image in custom folder

app/code/Magento/Theme/Model/Design/Config/Storage.php

@@ -77,7 +77,6 @@ class Storage
         foreach ($fieldsData as &$fieldData) {
             $value = $this->valueProcessor->process(
                 $this->scopeConfig->getValue($fieldData->getPath(), $scope, $scopeId),
-                $fieldData->getPath(),
                 $scope,
                 $scopeId,
                 $fieldData->getFieldConfig()

app/code/Magento/Theme/Model/Design/Config/ValueChecker.php

@@ -57,14 +57,12 @@ class ValueChecker
             return !$this->isEqual(
                 $this->valueProcessor->process(
                     $value,
-                    $fieldConfig['path'],
                     $scope,
                     $scopeId,
                     $fieldConfig
                 ),
                 $this->valueProcessor->process(
                     $this->appConfig->getValue($fieldConfig['path'], $scope, $scopeId),
-                    $fieldConfig['path'],
                     $scope,
                     $scopeId,
                     $fieldConfig

app/code/Magento/Theme/Model/Design/Config/ValueProcessor.php

@@ -27,16 +27,15 @@ class ValueProcessor
      * Process value
      *
      * @param string $value
-     * @param string $path
      * @param string $scope
      * @param string $scopeId
      * @param array $fieldConfig
      * @return mixed
      */
-    public function process($value, $path, $scope, $scopeId, array $fieldConfig)
+    public function process($value, $scope, $scopeId, array $fieldConfig)
     {
         $backendModel = $this->backendModelFactory->createByPath(
-            $path,
+            $fieldConfig['path'],
             [
                 'value' => $value,
                 'field_config' => $fieldConfig,

app/code/Magento/Theme/Model/ResourceModel/Design/Config/Scope/Collection.php

@@ -101,7 +101,6 @@ class Collection extends \Magento\Framework\Data\Collection
             if (isset($itemData['use_in_grid']) && (boolean)$itemData['use_in_grid']) {
                 $result[$itemName] = $this->valueProcessor->process(
                     $this->appConfig->getValue($itemData['path'], $scope, $scopeId),
-                    $itemData['path'],
                     $scope,
                     $scopeId,
                     $itemData

app/code/Magento/Theme/Test/Unit/Model/Design/Config/StorageTest.php

@@ -177,14 +177,14 @@ class StorageTest extends \PHPUnit_Framework_TestCase
             ->willReturn('path');
         $this->designConfigData->expects($this->atLeastOnce())
             ->method('getFieldConfig')
-            ->willReturn([]);
+            ->willReturn(['path' => 'path']);
         $this->scopeConfig->expects($this->once())
             ->method('getValue')
             ->with('path', $scope, $scopeId)
             ->willReturn('value');
         $this->valueProcessor->expects($this->once())
             ->method('process')
-            ->with('value', 'path', 'website', 1, [])
+            ->with('value', 'website', 1, ['path' => 'path'])
             ->willReturnArgument(0);
         $this->designConfigData->expects($this->once())
             ->method('setValue')

app/code/Magento/Theme/Test/Unit/Model/Design/Config/ValueProcessorTest.php

@@ -44,7 +44,7 @@ class ValueProcessorTest extends \PHPUnit_Framework_TestCase
                 $path,
                 [
                     'value' => $value,
-                    'field_config' => [],
+                    'field_config' => ['path' => $path],
                     'scope' => $scope,
                     'scope_id' => $scopeId
                 ]
@@ -55,6 +55,6 @@ class ValueProcessorTest extends \PHPUnit_Framework_TestCase
         $this->backendModel->expects($this->once())
             ->method('getValue')
             ->willReturn($value);
-        $this->assertEquals($value, $this->valueProcessor->process($value, $path, $scope, $scopeId, []));
+        $this->assertEquals($value, $this->valueProcessor->process($value, $scope, $scopeId, ['path' => $path]));
     }
 }

app/code/Magento/Theme/Test/Unit/Model/ResourceModel/Design/Config/Scope/CollectionTest.php

@@ -113,9 +113,9 @@ class CollectionTest extends \PHPUnit_Framework_TestCase
         $this->valueProcessor->expects($this->atLeastOnce())
             ->method('process')
             ->withConsecutive(
-                ['DefaultValue', 'second/field/path'],
-                ['WebsiteValue', 'second/field/path'],
-                ['WebsiteValue', 'second/field/path']
+                ['DefaultValue', 'default', null, ['path' => 'second/field/path', 'use_in_grid' => 1]],
+                ['WebsiteValue', 'website', 1, ['path' => 'second/field/path', 'use_in_grid' => 1]],
+                ['WebsiteValue', 'store', 1, ['path' => 'second/field/path', 'use_in_grid' => 1]]
             )
             ->willReturnOnConsecutiveCalls(
                 'DefaultValue',