Always disable "content has shadow".

BUG=161603
TEST=as in bug


Review URL: https://chromiumcodereview.appspot.com/11316172

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@169755 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 10 insertions, 3 deletions

diff --git a/ui/base/cocoa/underlay_opengl_hosting_window.mm b/ui/base/cocoa/underlay_opengl_hosting_window.mm
index e56323e..e69c66f 100644
--- a/ui/base/cocoa/underlay_opengl_hosting_window.mm
+++ b/ui/base/cocoa/underlay_opengl_hosting_window.mm
@@ -108,10 +108,17 @@ void RootDidAddSubview(id self, SEL _cmd, NSView* subview) {
     // all windows hosting OpenGL content must not be opaque.
     [self setOpaque:NO];
 
+    // Always disable "content has shadow". This class assumes that all holes
+    // punched in the window are intentional, in order to show accelerated
+    // content underneath, so those holes cannot be allowed to cause holes in
+    // the shadow. Note that the edges trimmed from around the periphery of a
+    // window (through use of transparency) don't count as content area with
+    // regards to "content has shadow".
+    [self _setContentHasShadow:NO];
+
+    // Only set up opaques if the window is a proper window with a title bar
+    // and all.
     if (windowStyle & NSTitledWindowMask) {
-      // Only fiddle with shadows if the window is a proper window with a
-      // title bar and all.
-      [self _setContentHasShadow:NO];
 
       NSView* rootView = [[self contentView] superview];
       const NSRect rootBounds = [rootView bounds];