Add logging to help diagnose reason for ASan LSan flakiness.

chrome/browser/apps/app_browsertest.cc

Index: chrome/browser/apps/app_browsertest.cc
diff --git a/chrome/browser/apps/app_browsertest.cc b/chrome/browser/apps/app_browsertest.cc
index 604161fb85a7f2dfee52b95ea6a1ed72704e2d1c..44e280485527da4cc2b1a380182b2e48e65b4552 100644
--- a/chrome/browser/apps/app_browsertest.cc
+++ b/chrome/browser/apps/app_browsertest.cc
@@ -748,9 +748,14 @@ IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest, MAYBE_AppWindowRestoreState) {
 
 IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest,
                        AppWindowAdjustBoundsToBeVisibleOnScreen) {
+  // TODO(benwells): Remove this logging once flakiness has been observed.
+  // See http://crbug.com/377754.
+  LOG(WARNING) << "Loading minimal app";
   const Extension* extension = LoadAndLaunchPlatformApp("minimal");
+  LOG(WARNING) << "Creating window";
   AppWindow* window = CreateAppWindow(extension);
 
+  LOG(WARNING) << "Performing tests";
   // The screen bounds didn't change, the cached bounds didn't need to adjust.
   gfx::Rect cached_bounds(80, 100, 400, 400);
   gfx::Rect cached_screen_bounds(0, 0, 1600, 900);
@@ -818,6 +823,7 @@ IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest,
                                                   gfx::Size(900, 900),
                                                   &bounds);
   EXPECT_EQ(bounds, gfx::Rect(0, 0, 900, 900));
+  LOG(WARNING) << "Tests complete";
 }
 
 namespace {