Reactivate deflaked keyboard accessory tests

After having landed https://crrev.com/c/1028230, the problems of the
linked bug seem to have gone (as assumed).

I removed the Disabling and RetryOnFailure annotations to test on 3
devices (one physical, two emulator with different screen sizes and OS)
and couldn't find a single broken test.
Edit: I changed the font size recently (not finally) which seems to
bother some bots - unrelated from the filed bug. Changed that back.

This CL now reenables all the tests but keeps the RetryOnFailure
annotation. That way, I can test whether the tests start failing on
some bots again without making the sheriffs life harder.
If the bots don't notice any flakiness, I will remove the
RetryOnFailure annotation as well and mark the linked bug fixed.

Bug: 838922
Change-Id: I9781e6d820ac39e43435ad1529da817601967ed4
Reviewed-on: https://chromium-review.googlesource.com/1044371
Reviewed-by: Bernhard Bauer <bauerb@chromium.org>
Commit-Queue: Friedrich Horschig <fhorschig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#556798}

chrome/android/java/res/values/dimens.xml

@@ -128,7 +128,7 @@
     <dimen name="keyboard_accessory_height">36dp</dimen>
     <dimen name="keyboard_accessory_padding">4dp</dimen>
     <dimen name="keyboard_accessory_sheet_height">200dp</dimen>
-    <dimen name="keyboard_accessory_text_size">6sp</dimen>
+    <dimen name="keyboard_accessory_text_size">10sp</dimen>
 
     <!-- Password generation popup dimensions -->
     <dimen name="password_generation_divider_height">1dp</dimen>

chrome/android/javatests/src/org/chromium/chrome/browser/autofill/AutofillKeyboardAccessoryIntegrationTest.java

@@ -26,7 +26,6 @@
 
 import org.chromium.base.ThreadUtils;
 import org.chromium.base.test.util.CommandLineFlags;
-import org.chromium.base.test.util.DisabledTest;
 import org.chromium.base.test.util.Feature;
 import org.chromium.base.test.util.MinAndroidSdkLevel;
 import org.chromium.base.test.util.RetryOnFailure;
@@ -127,7 +126,6 @@ public void testAutofocusedFieldDoesNotShowKeyboardAccessory()
     @Test
     @MediumTest
     @Feature({"keyboard-accessory"})
-    @DisabledTest(message = "crbug.com/838922")
     public void testTapInputFieldShowsKeyboardAccessory()
             throws ExecutionException, InterruptedException, TimeoutException {
         loadTestPage(false);
@@ -146,7 +144,6 @@ public void testTapInputFieldShowsKeyboardAccessory()
     @Test
     @MediumTest
     @Feature({"keyboard-accessory"})
-    @DisabledTest(message = "crbug.com/836027")
     public void testSwitchFieldsRescrollsKeyboardAccessory()
             throws ExecutionException, InterruptedException, TimeoutException {
         loadTestPage(false);
@@ -176,7 +173,6 @@ public void testSwitchFieldsRescrollsKeyboardAccessory()
     @MediumTest
     @Feature({"keyboard-accessory"})
     @MinAndroidSdkLevel(Build.VERSION_CODES.JELLY_BEAN_MR1)
-    @DisabledTest(message = "crbug.com/836027")
     public void testSwitchFieldsRescrollsKeyboardAccessoryRtl()
             throws ExecutionException, InterruptedException, TimeoutException {
         loadTestPage(true);