Automated g4 rollback of changelist 152815185.

*** Reason for rollback ***

The force submit broke GVR: []

*** Original change description ***

Add DashDownloaderService which downloads DASH streams at the background

***

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=152877808

library/dash/build.gradle

@@ -38,7 +38,6 @@ android {
 dependencies {
 dependencies {
     compile project(':library-core')
     compile project(':library-core')
     compile 'com.android.support:support-annotations:25.2.0'
     compile 'com.android.support:support-annotations:25.2.0'
-    compile 'com.android.support:support-core-utils:25.2.0'
     androidTestCompile 'com.google.dexmaker:dexmaker:1.2'
     androidTestCompile 'com.google.dexmaker:dexmaker:1.2'
     androidTestCompile 'com.google.dexmaker:dexmaker-mockito:1.2'
     androidTestCompile 'com.google.dexmaker:dexmaker-mockito:1.2'
     androidTestCompile 'org.mockito:mockito-core:1.9.5'
     androidTestCompile 'org.mockito:mockito-core:1.9.5'