Adds render tests for Explore Sites Dense Views

Bug: 977713
Change-Id: I54b01d443cf8f4335569e9f741a648bfc3c5cff1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1769720Reviewed-by: Justin DeWitt <dewittj@chromium.org>
Reviewed-by: Cathy Li <chili@chromium.org>
Commit-Queue: Angel Alvarez <angelii@google.com>
Cr-Commit-Position: refs/heads/master@{#691753}

chrome/android/javatests/src/org/chromium/chrome/browser/explore_sites/ExploreSitesPageTest.java

@@ -181,30 +181,28 @@ public class ExploreSitesPageTest {
     @SmallTest
     @CommandLineFlags.
     Add({"enable-features=ExploreSites<FakeStudyName", "force-fieldtrials=FakeStudyName/Enabled",
-            "force-fieldtrial-params=FakeStudyName.Enabled:variation/mostLikelyTile"
-                    + "/denseVariation/titleBottom"})
-    @Feature({"ExploreSites"})
-    public void
-    testInitialLayout_DenseTitleBottom() throws Exception {
-        // Ensure that the DenseTitleBottomView has loaded without crashing
+            "force-fieldtrial-params=FakeStudyName.Enabled:variation/mostLikelyTile/denseVariation/"
+                    + "titleBottom"})
+    @Feature({"ExploreSites", "RenderTest"})
+    @ParameterAnnotations.UseMethodParameter(NightModeTestUtils.NightModeParams.class)
+    public void testInitialLayout_DenseTitleBottom(boolean nightModeEnabled) throws Exception {
         Assert.assertEquals(
                 DenseVariation.DENSE_TITLE_BOTTOM, ExploreSitesBridge.getDenseVariation());
-        // TODO(angelii): Add render test once layout is finalized.
+        mRenderTestRule.render(mRecyclerView, "initial_layout_dense_title_bottom");
     }
 
     @Test
     @SmallTest
     @CommandLineFlags.
     Add({"enable-features=ExploreSites<FakeStudyName", "force-fieldtrials=FakeStudyName/Enabled",
-            "force-fieldtrial-params=FakeStudyName.Enabled:variation/mostLikelyTile"
-                    + "/denseVariation/titleRight"})
-    @Feature({"ExploreSites"})
-    public void
-    testInitialLayout_DenseTitleRight() throws Exception {
-        // Ensure that the DenseTitleRightView has loaded without crashing
+            "force-fieldtrial-params=FakeStudyName.Enabled:variation/mostLikelyTile/denseVariation/"
+                + "titleRight"})
+    @Feature({"ExploreSites", "RenderTest"})
+    @ParameterAnnotations.UseMethodParameter(NightModeTestUtils.NightModeParams.class)
+    public void testInitialLayout_DenseTitleRight(boolean nightModeEnabled) throws Exception {
         Assert.assertEquals(
                 DenseVariation.DENSE_TITLE_RIGHT, ExploreSitesBridge.getDenseVariation());
-        // TODO(angelii): Add render test once layout is finalized.
+        mRenderTestRule.render(mRecyclerView, "initial_layout_dense_title_right");
     }
 
     @Test

chrome/test/data/android/render_tests/ExploreSitesPageTest.NightModeDisabled-initial_layout_dense_title_bottom.Nexus_5-19.png.sha1

+174cb2e0ad9a2803799bab260d1c0ec804268f36
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chrome/test/data/android/render_tests/ExploreSitesPageTest.NightModeDisabled-initial_layout_dense_title_right.Nexus_5-19.png.sha1

+be87c1767a5bbd59f25311d363635f3937ddbd51
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chrome/test/data/android/render_tests/ExploreSitesPageTest.NightModeEnabled-initial_layout_dense_title_bottom.Nexus_5-19.png.sha1

+9d5d43b9a4d0091246a502881f71f4abfb53fe87
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chrome/test/data/android/render_tests/ExploreSitesPageTest.NightModeEnabled-initial_layout_dense_title_right.Nexus_5-19.png.sha1

+e9a2866c3bf9fc47506ce219a9073d5bfcf3da56
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