Fix GWT super dev mode

* Pass /java as src directory.
* Move RangeSubject out of extensions.client.testing package.
  Extensions.gwt.xml includes the whole client directory, including this
  class. However, this class imports Truth code, which is not available
  in GWT. Move it to a directory that does not require GWT.

Change-Id: I166b2e550813dc2b52e8fab1453c411f3374ed87

java/com/google/gerrit/extensions/client/testing/BUILD

@@ -1,11 +0,0 @@
-java_library(
-    name = "client-test-util",
-    testonly = 1,
-    srcs = glob(["**/*.java"]),
-    visibility = ["//visibility:public"],
-    deps = [
-        "//java/com/google/gerrit/extensions:api",
-        "//java/com/google/gerrit/truth",
-        "//lib:truth",
-    ],
-)

java/com/google/gerrit/extensions/common/testing/BUILD

@@ -5,7 +5,6 @@ java_library(
     visibility = ["//visibility:public"],
     deps = [
         "//java/com/google/gerrit/extensions:api",
-        "//java/com/google/gerrit/extensions/client/testing:client-test-util",
         "//java/com/google/gerrit/truth",
         "//lib:truth",
         "//lib/jgit/org.eclipse.jgit:jgit",

java/com/google/gerrit/extensions/common/testing/FixReplacementInfoSubject.java

@@ -20,7 +20,6 @@ import com.google.common.truth.FailureMetadata;
 import com.google.common.truth.StringSubject;
 import com.google.common.truth.Subject;
 import com.google.common.truth.Truth;
-import com.google.gerrit.extensions.client.testing.RangeSubject;
 import com.google.gerrit.extensions.common.FixReplacementInfo;
 
 public class FixReplacementInfoSubject

java/com/google/gerrit/extensions/common/testing/RangeSubject.java

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package com.google.gerrit.extensions.client.testing;
+package com.google.gerrit.extensions.common.testing;
 
 import static com.google.common.truth.Truth.assertAbout;