Make touch-based synthetic gesture take touch slop into account.

content/common/android/view_configuration.cc

Index: content/common/android/view_configuration.cc
diff --git a/content/common/android/view_configuration.cc b/content/common/android/view_configuration.cc
index 9363ebbd99e40136fa2fa010ef1155c232a66e6c..291d40e05693bb5ad84682c23b2d5bd8f066d61b 100644
--- a/content/common/android/view_configuration.cc
+++ b/content/common/android/view_configuration.cc
@@ -52,6 +52,13 @@ int ViewConfiguration::GetMinimumFlingVelocityInPixelsPerSecond() {
   return Java_ViewConfiguration_getScaledMinimumFlingVelocity(env, view.obj());
 }
 
+int ViewConfiguration::GetTouchSlopInPixels() {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> view =
+      Java_ViewConfiguration_get(env, GetApplicationContext());
+  return Java_ViewConfiguration_getScaledTouchSlop(env, view.obj());
+}
+
 bool ViewConfiguration::RegisterViewConfiguration(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }