Modify WebBluetooth chooser based on UI review feedback

chrome/browser/ui/cocoa/chooser_content_view_cocoa.mm

Index: chrome/browser/ui/cocoa/chooser_content_view_cocoa.mm
diff --git a/chrome/browser/ui/cocoa/chooser_content_view_cocoa.mm b/chrome/browser/ui/cocoa/chooser_content_view_cocoa.mm
index 5df8fd3cdf20853640149a5a7bd5c1a2234f0e8c..501b91f98f0a55dc83451964125cd87d5b876768 100644
--- a/chrome/browser/ui/cocoa/chooser_content_view_cocoa.mm
+++ b/chrome/browser/ui/cocoa/chooser_content_view_cocoa.mm
@@ -14,6 +14,7 @@
 #include "chrome/grit/generated_resources.h"
 #include "skia/ext/skia_utils_mac.h"
 #import "third_party/google_toolbox_for_mac/src/AppKit/GTMUILocalizerAndLayoutTweaker.h"
+#include "third_party/skia/include/core/SkColor.h"
 #import "ui/base/cocoa/controls/hyperlink_button_cell.h"
 #include "ui/base/l10n/l10n_util_mac.h"
 #include "ui/base/resource/resource_bundle.h"
@@ -63,6 +64,9 @@ const CGFloat kTableRowViewVerticalPadding = 1.0f;
 // Distance between the adapter off help link and the scroll view boundaries.
 const CGFloat kAdapterOffHelpLinkPadding = 5.0f;
 
+// Background color of the footnote view.
+const SkColor kFootnoteBackgroundColor = SkColorSetRGB(245, 245, 245);
+
 // The lookup table for signal strength level image.
 const int kSignalStrengthLevelImageIds[5] = {IDR_SIGNAL_0_BAR, IDR_SIGNAL_1_BAR,
                                              IDR_SIGNAL_2_BAR, IDR_SIGNAL_3_BAR,
@@ -567,8 +571,9 @@ void ChooserContentViewController::UpdateTableView() {
 
     // Separator.
     CGFloat separatorOriginX = 0.0f;
-    CGFloat separatorOriginY = kMarginY + helpButtonHeight + kVerticalPadding;
-    [separator_ setFrameOrigin:NSMakePoint(separatorOriginX, separatorOriginY)];
+    separatorOriginY_ = kMarginY + helpButtonHeight + kVerticalPadding;
+    [separator_
+        setFrameOrigin:NSMakePoint(separatorOriginX, separatorOriginY_)];
     [self addSubview:separator_];
 
     // Help button.
@@ -878,4 +883,11 @@ void ChooserContentViewController::UpdateTableView() {
   return [tableRowView pairedStatus];
 }
 
+- (void)drawRect:(NSRect)rect {
+  [skia::SkColorToCalibratedNSColor(kFootnoteBackgroundColor) setFill];

[Robert Sesek, 2016/11/10 22:01:08]

I'd use +[NSColor colorWithCalibratedWhite:245.0 / 255.0 alpha:1.0] instead, to
avoid the conversion.

[juncai, 2016/11/11 01:46:33]

Done.

+  NSRect footnoteFrame = NSMakeRect(0, 0, kChooserWidth, separatorOriginY_);
+  NSRectFill(footnoteFrame);
+  [super drawRect:footnoteFrame];
+}
+
 @end