Force all Mac Task Manager icons to be the same size.

chrome/browser/ui/cocoa/task_manager_mac.mm

Index: chrome/browser/ui/cocoa/task_manager_mac.mm
diff --git a/chrome/browser/ui/cocoa/task_manager_mac.mm b/chrome/browser/ui/cocoa/task_manager_mac.mm
index 3beddcc5ca791af2b1acf2e9c32c38548c0f3f27..5b429c12881c54cad2ff0a655628aa9c27ecf746 100644
--- a/chrome/browser/ui/cocoa/task_manager_mac.mm
+++ b/chrome/browser/ui/cocoa/task_manager_mac.mm
@@ -603,12 +603,13 @@ void TaskManagerMac::WindowWasClosed() {
 }
 
 NSImage* TaskManagerMac::GetImageForRow(int row) {
-  const CGFloat kImageWidth = 16.0;
+  const NSSize kImageSize = NSMakeSize(16.0, 16.0);
   NSImage* image = gfx::NSImageFromImageSkia(table_model_->GetIcon(row));
-  if (!image) {
-    image = [[[NSImage alloc] initWithSize:NSMakeSize(kImageWidth, kImageWidth)]
-        autorelease];
-  }
+  if (image)
+    image.size = kImageSize;
+  else
+    image = [[[NSImage alloc] initWithSize:kImageSize] autorelease];
+
   return image;
 }