Fix context menu tests

testDismissContextMenuOnClick instrumentation test fails because we
click on a notification instead of a view in the app which causes a
java.lang.SecurityException: "Injecting to another application requires
INJECT_EVENTS permission."

To work around this issue, this CL changes the test to click roughly
the bottom right corner of the screen.

Bug: 1001966
Change-Id: I3f0d3c06ad72450217b936ea17d896db4162deb8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1792685Reviewed-by: Theresa  <twellington@chromium.org>
Commit-Queue: Sinan Sahin <sinansahin@google.com>
Cr-Commit-Position: refs/heads/master@{#695179}

chrome/android/javatests/src/org/chromium/chrome/browser/contextmenu/ContextMenuTest.java

@@ -231,8 +231,8 @@ public class ContextMenuTest implements CustomMainActivityStart {
             }
         });
 
-        TestTouchUtils.singleClickView(
-                InstrumentationRegistry.getInstrumentation(), tab.getView(), 0, 0);
+        TestTouchUtils.singleClickView(InstrumentationRegistry.getInstrumentation(), tab.getView(),
+                tab.getView().getWidth() - 5, tab.getView().getHeight() - 5);
 
         CriteriaHelper.pollUiThread(new Criteria("Activity did not regain focus.") {
             @Override

chrome/android/javatests/src/org/chromium/chrome/browser/contextmenu/RevampedContextMenuTest.java

@@ -178,8 +178,8 @@ public class RevampedContextMenuTest implements DownloadTestRule.CustomMainActiv
             }
         });
 
-        TestTouchUtils.singleClickView(
-                InstrumentationRegistry.getInstrumentation(), tab.getView(), 0, 0);
+        TestTouchUtils.singleClickView(InstrumentationRegistry.getInstrumentation(), tab.getView(),
+                tab.getView().getWidth() - 5, tab.getView().getHeight() - 5);
 
         CriteriaHelper.pollUiThread(new Criteria("Activity did not regain focus.") {
             @Override