| Index: ui/views/corewm/tooltip_controller_unittest.cc | 
| diff --git a/ui/views/corewm/tooltip_controller_unittest.cc b/ui/views/corewm/tooltip_controller_unittest.cc | 
| index 53f84e3a29185adbf667b8aa4792ad7713c0e937..f4b9606a2e1125792b8fed955a0404f4614737cf 100644 | 
| --- a/ui/views/corewm/tooltip_controller_unittest.cc | 
| +++ b/ui/views/corewm/tooltip_controller_unittest.cc | 
| @@ -135,15 +135,15 @@ class TooltipControllerTest : public aura::test::AuraTestBase { | 
|  | 
| TEST_F(TooltipControllerTest, ViewTooltip) { | 
| view_->set_tooltip_text(ASCIIToUTF16("Tooltip Text")); | 
| -  EXPECT_EQ(string16(), helper_->GetTooltipText()); | 
| +  EXPECT_EQ(base::string16(), helper_->GetTooltipText()); | 
| EXPECT_EQ(NULL, helper_->GetTooltipWindow()); | 
| generator_->MoveMouseToCenterOf(GetWindow()); | 
|  | 
| EXPECT_EQ(GetWindow(), GetRootWindow()->GetEventHandlerForPoint( | 
| generator_->current_location())); | 
| -  string16 expected_tooltip = ASCIIToUTF16("Tooltip Text"); | 
| +  base::string16 expected_tooltip = ASCIIToUTF16("Tooltip Text"); | 
| EXPECT_EQ(expected_tooltip, aura::client::GetTooltipText(GetWindow())); | 
| -  EXPECT_EQ(string16(), helper_->GetTooltipText()); | 
| +  EXPECT_EQ(base::string16(), helper_->GetTooltipText()); | 
| EXPECT_EQ(GetWindow(), helper_->GetTooltipWindow()); | 
|  | 
| // Fire tooltip timer so tooltip becomes visible. | 
| @@ -160,7 +160,7 @@ TEST_F(TooltipControllerTest, ViewTooltip) { | 
|  | 
| TEST_F(TooltipControllerTest, TooltipsInMultipleViews) { | 
| view_->set_tooltip_text(ASCIIToUTF16("Tooltip Text")); | 
| -  EXPECT_EQ(string16(), helper_->GetTooltipText()); | 
| +  EXPECT_EQ(base::string16(), helper_->GetTooltipText()); | 
| EXPECT_EQ(NULL, helper_->GetTooltipWindow()); | 
|  | 
| PrepareSecondView(); | 
| @@ -176,7 +176,7 @@ TEST_F(TooltipControllerTest, TooltipsInMultipleViews) { | 
| EXPECT_TRUE(helper_->IsTooltipVisible()); | 
| EXPECT_EQ(window, root_window->GetEventHandlerForPoint( | 
| generator_->current_location())); | 
| -    string16 expected_tooltip = ASCIIToUTF16("Tooltip Text"); | 
| +    base::string16 expected_tooltip = ASCIIToUTF16("Tooltip Text"); | 
| EXPECT_EQ(expected_tooltip, aura::client::GetTooltipText(window)); | 
| EXPECT_EQ(expected_tooltip, helper_->GetTooltipText()); | 
| EXPECT_EQ(window, helper_->GetTooltipWindow()); | 
| @@ -186,7 +186,7 @@ TEST_F(TooltipControllerTest, TooltipsInMultipleViews) { | 
| EXPECT_FALSE(helper_->IsTooltipVisible()); | 
| EXPECT_EQ(window, root_window->GetEventHandlerForPoint( | 
| generator_->current_location())); | 
| -    string16 expected_tooltip;  // = "" | 
| +    base::string16 expected_tooltip;  // = "" | 
| EXPECT_EQ(expected_tooltip, aura::client::GetTooltipText(window)); | 
| EXPECT_EQ(expected_tooltip, helper_->GetTooltipText()); | 
| EXPECT_EQ(window, helper_->GetTooltipWindow()); | 
| @@ -195,11 +195,11 @@ TEST_F(TooltipControllerTest, TooltipsInMultipleViews) { | 
|  | 
| TEST_F(TooltipControllerTest, EnableOrDisableTooltips) { | 
| view_->set_tooltip_text(ASCIIToUTF16("Tooltip Text")); | 
| -  EXPECT_EQ(string16(), helper_->GetTooltipText()); | 
| +  EXPECT_EQ(base::string16(), helper_->GetTooltipText()); | 
| EXPECT_EQ(NULL, helper_->GetTooltipWindow()); | 
|  | 
| generator_->MoveMouseRelativeTo(GetWindow(), view_->bounds().CenterPoint()); | 
| -  string16 expected_tooltip = ASCIIToUTF16("Tooltip Text"); | 
| +  base::string16 expected_tooltip = ASCIIToUTF16("Tooltip Text"); | 
|  | 
| // Fire tooltip timer so tooltip becomes visible. | 
| helper_->FireTooltipTimer(); | 
| @@ -221,7 +221,7 @@ TEST_F(TooltipControllerTest, EnableOrDisableTooltips) { | 
| // Verifies tooltip isn't shown if tooltip text consists entirely of whitespace. | 
| TEST_F(TooltipControllerTest, DontShowEmptyTooltips) { | 
| view_->set_tooltip_text(ASCIIToUTF16("                     ")); | 
| -  EXPECT_EQ(string16(), helper_->GetTooltipText()); | 
| +  EXPECT_EQ(base::string16(), helper_->GetTooltipText()); | 
| EXPECT_EQ(NULL, helper_->GetTooltipWindow()); | 
|  | 
| generator_->MoveMouseRelativeTo(GetWindow(), view_->bounds().CenterPoint()); | 
| @@ -232,7 +232,7 @@ TEST_F(TooltipControllerTest, DontShowEmptyTooltips) { | 
|  | 
| TEST_F(TooltipControllerTest, TooltipHidesOnKeyPressAndStaysHiddenUntilChange) { | 
| view_->set_tooltip_text(ASCIIToUTF16("Tooltip Text for view 1")); | 
| -  EXPECT_EQ(string16(), helper_->GetTooltipText()); | 
| +  EXPECT_EQ(base::string16(), helper_->GetTooltipText()); | 
| EXPECT_EQ(NULL, helper_->GetTooltipWindow()); | 
|  | 
| TooltipTestView* view2 = PrepareSecondView(); | 
| @@ -261,7 +261,7 @@ TEST_F(TooltipControllerTest, TooltipHidesOnKeyPressAndStaysHiddenUntilChange) { | 
| EXPECT_EQ(window, | 
| GetRootWindow()->GetEventHandlerForPoint( | 
| generator_->current_location())); | 
| -    string16 expected_tooltip = ASCIIToUTF16("Tooltip Text for view 1"); | 
| +    base::string16 expected_tooltip = ASCIIToUTF16("Tooltip Text for view 1"); | 
| EXPECT_EQ(expected_tooltip, aura::client::GetTooltipText(window)); | 
| EXPECT_EQ(expected_tooltip, helper_->GetTooltipText()); | 
| EXPECT_EQ(window, helper_->GetTooltipWindow()); | 
| @@ -273,7 +273,7 @@ TEST_F(TooltipControllerTest, TooltipHidesOnKeyPressAndStaysHiddenUntilChange) { | 
| helper_->FireTooltipTimer(); | 
| EXPECT_TRUE(helper_->IsTooltipVisible()); | 
| EXPECT_TRUE(helper_->IsTooltipShownTimerRunning()); | 
| -  string16 expected_tooltip = ASCIIToUTF16("Tooltip Text for view 2"); | 
| +  base::string16 expected_tooltip = ASCIIToUTF16("Tooltip Text for view 2"); | 
| EXPECT_EQ(expected_tooltip, aura::client::GetTooltipText(window)); | 
| EXPECT_EQ(expected_tooltip, helper_->GetTooltipText()); | 
| EXPECT_EQ(window, helper_->GetTooltipWindow()); | 
| @@ -281,7 +281,7 @@ TEST_F(TooltipControllerTest, TooltipHidesOnKeyPressAndStaysHiddenUntilChange) { | 
|  | 
| TEST_F(TooltipControllerTest, TooltipHidesOnTimeoutAndStaysHiddenUntilChange) { | 
| view_->set_tooltip_text(ASCIIToUTF16("Tooltip Text for view 1")); | 
| -  EXPECT_EQ(string16(), helper_->GetTooltipText()); | 
| +  EXPECT_EQ(base::string16(), helper_->GetTooltipText()); | 
| EXPECT_EQ(NULL, helper_->GetTooltipWindow()); | 
|  | 
| TooltipTestView* view2 = PrepareSecondView(); | 
| @@ -309,7 +309,7 @@ TEST_F(TooltipControllerTest, TooltipHidesOnTimeoutAndStaysHiddenUntilChange) { | 
| EXPECT_FALSE(helper_->IsTooltipShownTimerRunning()); | 
| EXPECT_EQ(window, GetRootWindow()->GetEventHandlerForPoint( | 
| generator_->current_location())); | 
| -    string16 expected_tooltip = ASCIIToUTF16("Tooltip Text for view 1"); | 
| +    base::string16 expected_tooltip = ASCIIToUTF16("Tooltip Text for view 1"); | 
| EXPECT_EQ(expected_tooltip, aura::client::GetTooltipText(window)); | 
| EXPECT_EQ(expected_tooltip, helper_->GetTooltipText()); | 
| EXPECT_EQ(window, helper_->GetTooltipWindow()); | 
| @@ -321,7 +321,7 @@ TEST_F(TooltipControllerTest, TooltipHidesOnTimeoutAndStaysHiddenUntilChange) { | 
| helper_->FireTooltipTimer(); | 
| EXPECT_TRUE(helper_->IsTooltipVisible()); | 
| EXPECT_TRUE(helper_->IsTooltipShownTimerRunning()); | 
| -  string16 expected_tooltip = ASCIIToUTF16("Tooltip Text for view 2"); | 
| +  base::string16 expected_tooltip = ASCIIToUTF16("Tooltip Text for view 2"); | 
| EXPECT_EQ(expected_tooltip, aura::client::GetTooltipText(window)); | 
| EXPECT_EQ(expected_tooltip, helper_->GetTooltipText()); | 
| EXPECT_EQ(window, helper_->GetTooltipWindow()); | 
| @@ -331,9 +331,9 @@ TEST_F(TooltipControllerTest, TooltipHidesOnTimeoutAndStaysHiddenUntilChange) { | 
| TEST_F(TooltipControllerTest, HideOnExit) { | 
| view_->set_tooltip_text(ASCIIToUTF16("Tooltip Text")); | 
| generator_->MoveMouseToCenterOf(GetWindow()); | 
| -  string16 expected_tooltip = ASCIIToUTF16("Tooltip Text"); | 
| +  base::string16 expected_tooltip = ASCIIToUTF16("Tooltip Text"); | 
| EXPECT_EQ(expected_tooltip, aura::client::GetTooltipText(GetWindow())); | 
| -  EXPECT_EQ(string16(), helper_->GetTooltipText()); | 
| +  EXPECT_EQ(base::string16(), helper_->GetTooltipText()); | 
| EXPECT_EQ(GetWindow(), helper_->GetTooltipWindow()); | 
|  | 
| // Fire tooltip timer so tooltip becomes visible. | 
| @@ -459,9 +459,9 @@ TEST_F(TooltipControllerCaptureTest, CloseOnCaptureLost) { | 
| view_->GetWidget()->SetCapture(view_); | 
| view_->set_tooltip_text(ASCIIToUTF16("Tooltip Text")); | 
| generator_->MoveMouseToCenterOf(GetWindow()); | 
| -  string16 expected_tooltip = ASCIIToUTF16("Tooltip Text"); | 
| +  base::string16 expected_tooltip = ASCIIToUTF16("Tooltip Text"); | 
| EXPECT_EQ(expected_tooltip, aura::client::GetTooltipText(GetWindow())); | 
| -  EXPECT_EQ(string16(), helper_->GetTooltipText()); | 
| +  EXPECT_EQ(base::string16(), helper_->GetTooltipText()); | 
| EXPECT_EQ(GetWindow(), helper_->GetTooltipWindow()); | 
|  | 
| // Fire tooltip timer so tooltip becomes visible. | 
| @@ -482,8 +482,8 @@ TEST_F(TooltipControllerCaptureTest, CloseOnCaptureLost) { | 
| #endif | 
| // Verifies the correct window is found for tooltips when there is a capture. | 
| TEST_F(TooltipControllerCaptureTest, MAYBE_Capture) { | 
| -  const string16 tooltip_text(ASCIIToUTF16("1")); | 
| -  const string16 tooltip_text2(ASCIIToUTF16("2")); | 
| +  const base::string16 tooltip_text(ASCIIToUTF16("1")); | 
| +  const base::string16 tooltip_text2(ASCIIToUTF16("2")); | 
|  | 
| widget_->SetBounds(gfx::Rect(0, 0, 200, 200)); | 
| view_->set_tooltip_text(tooltip_text); | 
| @@ -535,7 +535,7 @@ TEST_F(TooltipControllerCaptureTest, MAYBE_Capture) { | 
| // window when mouse moves are dispatched to it. | 
| TEST_F(TooltipControllerTest, TooltipsInMultipleRootWindows) { | 
| view_->set_tooltip_text(ASCIIToUTF16("Tooltip Text For RootWindow1")); | 
| -  EXPECT_EQ(string16(), helper_->GetTooltipText()); | 
| +  EXPECT_EQ(base::string16(), helper_->GetTooltipText()); | 
| EXPECT_EQ(NULL, helper_->GetTooltipWindow()); | 
|  | 
| aura::Window* window = GetWindow(); | 
| @@ -550,7 +550,7 @@ TEST_F(TooltipControllerTest, TooltipsInMultipleRootWindows) { | 
| EXPECT_TRUE(helper_->IsTooltipVisible()); | 
| EXPECT_EQ(window, root_window->GetEventHandlerForPoint( | 
| generator_->current_location())); | 
| -    string16 expected_tooltip = | 
| +    base::string16 expected_tooltip = | 
| ASCIIToUTF16("Tooltip Text For RootWindow1"); | 
| EXPECT_EQ(expected_tooltip, aura::client::GetTooltipText(window)); | 
| EXPECT_EQ(expected_tooltip, helper_->GetTooltipText()); | 
| @@ -583,7 +583,8 @@ TEST_F(TooltipControllerTest, TooltipsInMultipleRootWindows) { | 
| EXPECT_TRUE(helper_->IsTooltipVisible()); | 
| EXPECT_EQ(window2, root_window2->GetEventHandlerForPoint( | 
| generator_->current_location())); | 
| -    string16 expected_tooltip = ASCIIToUTF16("Tooltip Text For RootWindow2"); | 
| +    base::string16 expected_tooltip = | 
| +        ASCIIToUTF16("Tooltip Text For RootWindow2"); | 
| EXPECT_EQ(expected_tooltip, aura::client::GetTooltipText(window2)); | 
| EXPECT_EQ(expected_tooltip, helper_->GetTooltipText()); | 
| EXPECT_EQ(window2, helper_->GetTooltipWindow()); | 
| @@ -605,15 +606,15 @@ TEST_F(TooltipControllerTest, TooltipsInMultipleRootWindows) { | 
| // top of the ZOrder in its root window after activation changes. | 
| TEST_F(TooltipControllerTest, TooltipAtTopOfZOrderAfterActivation) { | 
| view_->set_tooltip_text(ASCIIToUTF16("Tooltip Text")); | 
| -  EXPECT_EQ(string16(), helper_->GetTooltipText()); | 
| +  EXPECT_EQ(base::string16(), helper_->GetTooltipText()); | 
| EXPECT_EQ(NULL, helper_->GetTooltipWindow()); | 
| generator_->MoveMouseToCenterOf(GetWindow()); | 
|  | 
| EXPECT_EQ(GetWindow(), GetRootWindow()->GetEventHandlerForPoint( | 
| generator_->current_location())); | 
| -  string16 expected_tooltip = ASCIIToUTF16("Tooltip Text"); | 
| +  base::string16 expected_tooltip = ASCIIToUTF16("Tooltip Text"); | 
| EXPECT_EQ(expected_tooltip, aura::client::GetTooltipText(GetWindow())); | 
| -  EXPECT_EQ(string16(), helper_->GetTooltipText()); | 
| +  EXPECT_EQ(base::string16(), helper_->GetTooltipText()); | 
| EXPECT_EQ(GetWindow(), helper_->GetTooltipWindow()); | 
|  | 
| // Fire tooltip timer so tooltip becomes visible. | 
|  |