Adjust locationbar text vertical position under Material Design.

chrome/browser/ui/cocoa/location_bar/autocomplete_text_field.mm

Index: chrome/browser/ui/cocoa/location_bar/autocomplete_text_field.mm
diff --git a/chrome/browser/ui/cocoa/location_bar/autocomplete_text_field.mm b/chrome/browser/ui/cocoa/location_bar/autocomplete_text_field.mm
index 5087453f323047a4b245edf5d0713aa1838bd88e..705cc157d18a91ee2cafcbcd35d81ab828921dad 100644
--- a/chrome/browser/ui/cocoa/location_bar/autocomplete_text_field.mm
+++ b/chrome/browser/ui/cocoa/location_bar/autocomplete_text_field.mm
@@ -15,6 +15,7 @@
 #import "chrome/browser/ui/cocoa/toolbar/toolbar_controller.h"
 #import "chrome/browser/ui/cocoa/url_drop_target.h"
 #import "chrome/browser/ui/cocoa/view_id_util.h"
+#import "ui/base/cocoa/nsview_additions.h"
 #include "ui/base/material_design/material_design_controller.h"
 #include "ui/gfx/scoped_ns_graphics_context_save_gstate_mac.h"
 
@@ -361,9 +362,20 @@ const CGFloat kAnimationDuration = 0.2;
     [nc removeObserver:self
                   name:NSWindowDidResizeNotification
                 object:[self window]];
+    [nc removeObserver:self
+                  name:NSWindowDidChangeScreenNotification
+                object:[self window]];
   }
 }
 
+- (void)windowDidChangeScreen {
+  // Inform the AutocompleteTextFieldCell's of the coordinate system line
+  // width needed to draw a single-pixel line. This value changes as we move
+  // between Retina and non-Retina displays.
+  [[self cell] setSinglePixelLineWidth:[self cr_lineWidth]];
+  [self setNeedsDisplay];
+}
+
 - (void)viewDidMoveToWindow {
   if (![self window]) {
     return;
@@ -387,6 +399,14 @@ const CGFloat kAnimationDuration = 0.2;
          selector:@selector(windowDidResize:)
              name:NSWindowDidResizeNotification
            object:[self window]];
+  [nc addObserver:self
+         selector:@selector(windowDidChangeScreen)
+             name:NSWindowDidChangeScreenNotification
+           object:[self window]];
+
+  // Make sure the cell has the current line width.
+  [[self cell] setSinglePixelLineWidth:[self cr_lineWidth]];
+
   // Only register for drops if not in a popup window. Lazily create the
   // drop handler when the type of window is known.
   BrowserWindowController* windowController =