Updated remaining samples to gradle 1.8

Change-Id: I07b0d46e6bb8eddca0bccaad82883286ce0a70b2
diff --git a/input/gestures/BasicGestureDetect/gradle/wrapper/gradle-wrapper.properties b/input/gestures/BasicGestureDetect/gradle/wrapper/gradle-wrapper.properties
index 5c22dec..861eddc 100644
--- a/input/gestures/BasicGestureDetect/gradle/wrapper/gradle-wrapper.properties
+++ b/input/gestures/BasicGestureDetect/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=http\://services.gradle.org/distributions/gradle-1.6-bin.zip
+distributionUrl=http\://services.gradle.org/distributions/gradle-1.8-bin.zip
diff --git a/testing/ActivityInstrumentation/gradle/wrapper/gradle-wrapper.properties b/testing/ActivityInstrumentation/gradle/wrapper/gradle-wrapper.properties
index 5c22dec..861eddc 100644
--- a/testing/ActivityInstrumentation/gradle/wrapper/gradle-wrapper.properties
+++ b/testing/ActivityInstrumentation/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=http\://services.gradle.org/distributions/gradle-1.6-bin.zip
+distributionUrl=http\://services.gradle.org/distributions/gradle-1.8-bin.zip
diff --git a/ui/accessibility/BasicAccessibility/gradle/wrapper/gradle-wrapper.properties b/ui/accessibility/BasicAccessibility/gradle/wrapper/gradle-wrapper.properties
index 5c22dec..861eddc 100644
--- a/ui/accessibility/BasicAccessibility/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/accessibility/BasicAccessibility/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=http\://services.gradle.org/distributions/gradle-1.6-bin.zip
+distributionUrl=http\://services.gradle.org/distributions/gradle-1.8-bin.zip