Change panel drag related methods to use mouse location in screen coordinates.

chrome/browser/ui/panels/panel_browser_window_cocoa.mm

Index: chrome/browser/ui/panels/panel_browser_window_cocoa.mm
diff --git a/chrome/browser/ui/panels/panel_browser_window_cocoa.mm b/chrome/browser/ui/panels/panel_browser_window_cocoa.mm
index 5f5a0683702c73b5b1e3475999ff318c6cca27d8..ff041d32651825d86d333cc93d4d478af1c2e7b7 100644
--- a/chrome/browser/ui/panels/panel_browser_window_cocoa.mm
+++ b/chrome/browser/ui/panels/panel_browser_window_cocoa.mm
@@ -13,6 +13,7 @@
 #include "chrome/browser/ui/panels/panel.h"
 #include "chrome/browser/ui/panels/panel_manager.h"
 #import "chrome/browser/ui/panels/panel_titlebar_view_cocoa.h"
+#import "chrome/browser/ui/panels/panel_utils_cocoa.h"
 #import "chrome/browser/ui/panels/panel_window_controller_cocoa.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "content/public/browser/native_web_keyboard_event.h"
@@ -26,19 +27,6 @@ namespace {
 // (according to avi@).
 const int kMinimumWindowSize = 1;
 
-// TODO(dcheng): Move elsewhere so BrowserWindowCocoa can use them too.
-// Converts global screen coordinates in platfrom-independent coordinates
-// (with the (0,0) in the top-left corner of the primary screen) to the Cocoa
-// screen coordinates (with (0,0) in the low-left corner).
-NSRect ConvertCoordinatesToCocoa(const gfx::Rect& bounds) {
-  // Flip coordinates based on the primary screen.
-  NSScreen* screen = [[NSScreen screens] objectAtIndex:0];
-
-  return NSMakeRect(
-      bounds.x(), NSHeight([screen frame]) - bounds.height() - bounds.y(),
-      bounds.width(), bounds.height());
-}
-
 }  // namespace
 
 // This creates a shim window class, which in turn creates a Cocoa window
@@ -97,7 +85,7 @@ void PanelBrowserWindowCocoa::ShowPanelInactive() {
   SetPanelBoundsInstantly(bounds_);
   is_shown_ = true;
 
-  NSRect finalFrame = ConvertCoordinatesToCocoa(bounds_);
+  NSRect finalFrame = cocoa_utils::ConvertRectToCocoaCoordinates(bounds_);
   [controller_ revealAnimatedWithFrame:finalFrame];
 }
 
@@ -124,7 +112,7 @@ void PanelBrowserWindowCocoa::setBoundsInternal(const gfx::Rect& bounds,
 
   bounds_ = bounds;
 
-  NSRect frame = ConvertCoordinatesToCocoa(bounds);
+  NSRect frame = cocoa_utils::ConvertRectToCocoaCoordinates(bounds);
   [controller_ setPanelFrame:frame animate:animate];
 }
 
@@ -315,9 +303,10 @@ class NativePanelTestingCocoa : public NativePanelTesting {
   NativePanelTestingCocoa(NativePanel* native_panel);
   virtual ~NativePanelTestingCocoa() { }
   // Overridden from NativePanelTesting
-  virtual void PressLeftMouseButtonTitlebar(const gfx::Point& point) OVERRIDE;
+  virtual void PressLeftMouseButtonTitlebar(
+      const gfx::Point& mouse_location) OVERRIDE;
   virtual void ReleaseMouseButtonTitlebar() OVERRIDE;
-  virtual void DragTitlebar(int delta_x, int delta_y) OVERRIDE;
+  virtual void DragTitlebar(const gfx::Point& mouse_location) OVERRIDE;
   virtual void CancelDragTitlebar() OVERRIDE;
   virtual void FinishDragTitlebar() OVERRIDE;
   virtual bool VerifyDrawingAttention() const OVERRIDE;
@@ -345,16 +334,24 @@ PanelTitlebarViewCocoa* NativePanelTestingCocoa::titlebar() const {
 }
 
 void NativePanelTestingCocoa::PressLeftMouseButtonTitlebar(
-  const gfx::Point& point) {
-  [titlebar() pressLeftMouseButtonTitlebar];
+    const gfx::Point& mouse_location) {
+  // Convert from platform-indepedent screen coordinates to Cocoa's screen
+  // coordinates because PanelTitlebarViewCocoa method takes Cocoa's screen
+  // coordinates.
+  [titlebar() pressLeftMouseButtonTitlebar:
+      cocoa_utils::ConvertPointToCocoaCoordinates(mouse_location)];
 }
 
 void NativePanelTestingCocoa::ReleaseMouseButtonTitlebar() {
   [titlebar() releaseLeftMouseButtonTitlebar];
 }
 
-void NativePanelTestingCocoa::DragTitlebar(int delta_x, int delta_y) {
-  [titlebar() dragTitlebarDeltaX:delta_x deltaY:delta_y];
+void NativePanelTestingCocoa::DragTitlebar(const gfx::Point& mouse_location) {
+  // Convert from platform-indepedent screen coordinates to Cocoa's screen
+  // coordinates because PanelTitlebarViewCocoa method takes Cocoa's screen
+  // coordinates.
+  [titlebar() dragTitlebar:
+      cocoa_utils::ConvertPointToCocoaCoordinates(mouse_location)];
 }
 
 void NativePanelTestingCocoa::CancelDragTitlebar() {