Add favicons to tabs on the Mac

chrome/browser/cocoa/tab_strip_controller.mm

Index: chrome/browser/cocoa/tab_strip_controller.mm
diff --git a/chrome/browser/cocoa/tab_strip_controller.mm b/chrome/browser/cocoa/tab_strip_controller.mm
index 90fced55f4a53d5e914281f71e293434d7d0f6a8..1acff657d5a6b66bf3a8c8239202953dc3ee330b 100644
--- a/chrome/browser/cocoa/tab_strip_controller.mm
+++ b/chrome/browser/cocoa/tab_strip_controller.mm
@@ -5,6 +5,7 @@
 #import "chrome/browser/cocoa/tab_strip_controller.h"
 
 #include "app/l10n_util.h"
+#include "base/mac_util.h"
 #include "base/sys_string_conversions.h"
 #include "chrome/app/chrome_dll_resource.h"
 #include "chrome/browser/browser.h"
@@ -17,10 +18,13 @@
 #import "chrome/browser/cocoa/tab_strip_model_observer_bridge.h"
 #import "chrome/browser/cocoa/tab_view.h"
 #import "chrome/browser/cocoa/throbber_view.h"
+#include "chrome/browser/tab_contents/navigation_controller.h"
+#include "chrome/browser/tab_contents/navigation_entry.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 #include "chrome/browser/tab_contents/tab_contents_view.h"
 #include "chrome/browser/tabs/tab_strip_model.h"
 #include "grit/generated_resources.h"
+#include "skia/ext/skia_utils_mac.h"
 
 NSString* const kTabStripNumberOfTabsChanged = @"kTabStripNumberOfTabsChanged";
 
@@ -420,13 +424,31 @@ NSString* const kTabStripNumberOfTabsChanged = @"kTabStripNumberOfTabsChanged";
 
 // A helper routine for creating an NSImageView to hold the fav icon for
 // |contents|.
-// TODO(pinkerton): fill in with code to use the real favicon, not the default
-// for all cases.
 - (NSImageView*)favIconImageViewForContents:(TabContents*)contents {
   NSRect iconFrame = NSMakeRect(0, 0, 16, 16);
   NSImageView* view = [[[NSImageView alloc] initWithFrame:iconFrame]
                           autorelease];
-  [view setImage:[NSImage imageNamed:@"nav"]];
+
+  NSImage* image = nil;
+
+  NavigationEntry* navEntry = contents->controller().GetLastCommittedEntry();
+  if (navEntry != NULL) {
+    NavigationEntry::FaviconStatus favIcon = navEntry->favicon();
+    const SkBitmap& bitmap = favIcon.bitmap();
+    if (favIcon.is_valid() && !bitmap.isNull())
+      image = gfx::SkBitmapToNSImage(bitmap);
+  }
+
+  // Either we don't have a valid favicon or there was some issue converting it
+  // from an SkBitmap. Either way, just show the default.
+  if (!image) {
+    NSBundle* bundle = mac_util::MainAppBundle();
+    image = [[NSImage alloc] initByReferencingFile:
+             [bundle pathForResource:@"nav" ofType:@"pdf"]];
+    [image autorelease];
+  }
+
+  [view setImage:image];
   return view;
 }