Fix SimulateKeyPress test function to be able to generate lower-case input.

Currently the function always generates capital letters regardless of the parameters.

Change-Id: I7b1f11743c3ba2463e7fd5268d29400d3c71792b
Reviewed-on: https://chromium-review.googlesource.com/1056533Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Vasilii Sukhanov <vasilii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#558640}

chrome/browser/site_per_process_interactive_browsertest.cc

@@ -224,7 +224,7 @@ IN_PROC_BROWSER_TEST_F(SitePerProcessInteractiveBrowserTest,
   // take time to propagate to the renderer's main thread.
   content::DOMMessageQueue msg_queue;
   std::string reply;
-  SimulateKeyPress(web_contents, ui::DomKey::FromCharacter('f'),
+  SimulateKeyPress(web_contents, ui::DomKey::FromCharacter('F'),
                    ui::DomCode::US_F, ui::VKEY_F, false, false, false, false);
   EXPECT_TRUE(msg_queue.WaitForMessage(&reply));
   EXPECT_EQ("\"F\"", reply);

content/public/test/browser_test_utils.cc

@@ -277,8 +277,15 @@ void BuildSimpleWebKeyEvent(blink::WebInputEvent::Type type,
 
   if (type == blink::WebInputEvent::kChar ||
       type == blink::WebInputEvent::kRawKeyDown) {
-    event->text[0] = key_code;
-    event->unmodified_text[0] = key_code;
+    // |key| is the only parameter that contains information about the case of
+    // the character. Use it to be able to generate lower case input.
+    if (key.IsCharacter()) {
+      event->text[0] = key.ToCharacter();
+      event->unmodified_text[0] = key.ToCharacter();
+    } else {
+      event->text[0] = key_code;
+      event->unmodified_text[0] = key_code;
+    }
   }
 }