[DevTools] Move DevToolsWindow testing code to a separate class.

chrome/browser/ui/cocoa/browser_window_controller_browsertest.mm

Index: chrome/browser/ui/cocoa/browser_window_controller_browsertest.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_controller_browsertest.mm b/chrome/browser/ui/cocoa/browser_window_controller_browsertest.mm
index 7ba3a715ab30e44b9097d26f5aa78824e94d662a..c22e9ced23cf544587ad65e6750b6909ad27f89a 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller_browsertest.mm
+++ b/chrome/browser/ui/cocoa/browser_window_controller_browsertest.mm
@@ -9,7 +9,7 @@
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
-#include "chrome/browser/devtools/devtools_window.h"
+#include "chrome/browser/devtools/devtools_window_testing.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/browser/infobars/simple_alert_infobar_delegate.h"
 #include "chrome/browser/profiles/profile.h"
@@ -134,11 +134,6 @@ class BrowserWindowControllerTest : public InProcessBrowserTest {
     return height;
   }
 
-  void SetDevToolsWindowContentsBounds(
-      DevToolsWindow* window, const gfx::Rect& bounds) {
-    window->SetInspectedPageBounds(bounds);
-  }
-
  private:
   DISALLOW_COPY_AND_ASSIGN(BrowserWindowControllerTest);
 };
@@ -366,9 +361,10 @@ IN_PROC_BROWSER_TEST_F(BrowserWindowControllerTest,
                        StatusBubblePositioning) {
   NSPoint origin = [controller() statusBubbleBaseFrame].origin;
 
-  DevToolsWindow* devtools_window = DevToolsWindow::OpenDevToolsWindowForTest(
-      browser(), true);
-  SetDevToolsWindowContentsBounds(devtools_window, gfx::Rect(10, 10, 100, 100));
+  DevToolsWindow* devtools_window =
+      DevToolsWindowTesting::OpenDevToolsWindowSync(browser(), true);
+  DevToolsWindowTesting::Get(devtools_window)->SetInspectedPageBounds(
+      gfx::Rect(10, 10, 100, 100));
 
   NSPoint originWithDevTools = [controller() statusBubbleBaseFrame].origin;
   EXPECT_FALSE(NSEqualPoints(origin, originWithDevTools));