Don't remember best resolution.

ash/display/display_manager_unittest.cc

Index: ash/display/display_manager_unittest.cc
diff --git a/ash/display/display_manager_unittest.cc b/ash/display/display_manager_unittest.cc
index 33ca06e70d27a124da1be8f07dbf2ff33845ba86..a188f9bd36e4f56ed75f75fea4a865922e3a9687 100644
--- a/ash/display/display_manager_unittest.cc
+++ b/ash/display/display_manager_unittest.cc
@@ -717,6 +717,42 @@ TEST_F(DisplayManagerTest, NativeDisplaysChangedAfterPrimaryChange) {
   EXPECT_EQ("0,0 100x100", GetDisplayForId(10).bounds().ToString());
 }
 
+TEST_F(DisplayManagerTest, DontRememberBestResolution) {
+  int display_id = 1000;
+  DisplayInfo native_display_info =
+      CreateDisplayInfo(display_id, gfx::Rect(0, 0, 1000, 500));
+  std::vector<Resolution> resolutions;
+  resolutions.push_back(Resolution(gfx::Size(1000, 500), false));
+  resolutions.push_back(Resolution(gfx::Size(800, 300), false));
+  resolutions.push_back(Resolution(gfx::Size(400, 500), false));
+
+  native_display_info.set_resolutions(resolutions);
+
+  std::vector<DisplayInfo> display_info_list;
+  display_info_list.push_back(native_display_info);
+  display_manager()->OnNativeDisplaysChanged(display_info_list);
+
+  gfx::Size selected;
+  EXPECT_FALSE(display_manager()->GetSelectedResolutionForDisplayId(
+      display_id, &selected));
+
+  // Unsupported resolution.
+  display_manager()->SetDisplayResolution(display_id, gfx::Size(800, 4000));
+  EXPECT_FALSE(display_manager()->GetSelectedResolutionForDisplayId(
+      display_id, &selected));
+
+  // Supported resolution.
+  display_manager()->SetDisplayResolution(display_id, gfx::Size(800, 300));
+  EXPECT_TRUE(display_manager()->GetSelectedResolutionForDisplayId(
+      display_id, &selected));
+  EXPECT_EQ("800x300", selected.ToString());
+
+  // Best resolution.
+  display_manager()->SetDisplayResolution(display_id, gfx::Size(1000, 500));
+  EXPECT_FALSE(display_manager()->GetSelectedResolutionForDisplayId(
+      display_id, &selected));
+}
+
 TEST_F(DisplayManagerTest, Rotate) {
   if (!SupportsMultipleDisplays())
     return;