Update to gradle 3.0 style dependencies.

Use api, androidTestImplementation, and testImplementation
when specifying project dependencies.

Cherry-pick of ag/2492803

Test: ./gradlew assemble
Change-Id: I014e51be73f3f7c086c5739c4bdbd27145a834bc
Merged-In: I014e51be73f3f7c086c5739c4bdbd27145a834bc
diff --git a/v7/preference/build.gradle b/v7/preference/build.gradle
index a7ad709..3f81093 100644
--- a/v7/preference/build.gradle
+++ b/v7/preference/build.gradle
@@ -18,18 +18,18 @@
 archivesBaseName = 'preference-v7'
 
 dependencies {
-    compile project(':support-v4')
-    compile project(':support-appcompat-v7')
-    compile project(':support-recyclerview-v7')
+    api project(':support-v4')
+    api project(':support-appcompat-v7')
+    api project(':support-recyclerview-v7')
 
-    androidTestCompile (libs.test_runner) {
+    androidTestImplementation (libs.test_runner) {
         exclude module: 'support-annotations'
     }
-    androidTestCompile (libs.espresso_core) {
+    androidTestImplementation (libs.espresso_core) {
         exclude module: 'support-annotations'
     }
-    androidTestCompile libs.mockito_core
-    androidTestCompile libs.dexmaker_mockito
+    androidTestImplementation libs.mockito_core
+    androidTestImplementation libs.dexmaker_mockito
 }
 
 android {