[VK] Remove useless ShowVirtualKeyboard call in browser test.

There is a call to ShowVirtualKeyboard in
DefaultKeyboardExtensionBrowserTest::GetKeyboardWebContents, which is
quite confusing, because the virtual keyboard should be showing up from
focus/clicking and not an explicit call.

I don't really know why that code is there (maybe it's to load the
extension). However, when --enable-virtual-keyboard flag is on, we
begin loading the extension anyway.

Bug: 849995
Change-Id: Icae6c405ccde304ece80456190802012e487ebc5
Reviewed-on: https://chromium-review.googlesource.com/1215432
Commit-Queue: Darren Shen <shend@chromium.org>
Reviewed-by: Yuichiro Hanada <yhanada@chromium.org>
Reviewed-by: James Cook <jamescook@chromium.org>
Cr-Commit-Position: refs/heads/master@{#590552}

chrome/browser/chromeos/extensions/default_keyboard_extension_browser_test.cc

@@ -7,7 +7,6 @@
 
 #include <vector>
 
-#include "ash/shell.h"
 #include "base/command_line.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
@@ -87,17 +86,9 @@ void DefaultKeyboardExtensionBrowserTest::RunTest(
   EXPECT_TRUE(ExecuteWebUIResourceTest(web_contents, resource_ids));
 }
 
-void DefaultKeyboardExtensionBrowserTest::ShowVirtualKeyboard() {
-  aura::Window* window = ash::Shell::GetPrimaryRootWindow();
-  ui::InputMethod* input_method = window->GetHost()->GetInputMethod();
-  ASSERT_TRUE(input_method);
-  input_method->ShowVirtualKeyboardIfEnabled();
-}
-
 content::WebContents*
 DefaultKeyboardExtensionBrowserTest::GetKeyboardWebContents(
     const std::string& id) {
-  ShowVirtualKeyboard();
   GURL url = extensions::Extension::GetBaseURLFromExtensionId(id);
   std::unique_ptr<content::RenderWidgetHostIterator> widgets(
       content::RenderWidgetHost::GetRenderWidgetHosts());

chrome/browser/chromeos/extensions/default_keyboard_extension_browser_test.h

@@ -44,8 +44,6 @@ class DefaultKeyboardExtensionBrowserTest : public InProcessBrowserTest {
   void RunTest(const base::FilePath& file,
                const DefaultKeyboardExtensionBrowserTestConfig& config);
 
-  void ShowVirtualKeyboard();
-
   // Returns the WebContents that the keyboard with extension |id| is in.
   content::WebContents* GetKeyboardWebContents(const std::string& id);