MacViews: Anchor bubbles according to the MD spec.

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

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "chrome/browser/ui/cocoa/location_bar/autocomplete_text_field.h"
 
 #include "base/logging.h"
 #import "base/mac/mac_util.h"
 #import "base/mac/sdk_forward_declarations.h"
 #include "chrome/browser/themes/theme_service.h"
@@ skipping 281 matching lines @@
 
 - (NSString*)suggestText {
   return suggestText_;
 }
 
 - (NSColor*)suggestColor {
   return suggestColor_;
 }
 
 - (NSPoint)bubblePointForDecoration:(LocationBarDecoration*)decoration {
-  const NSRect frame =
-      [[self cell] frameForDecoration:decoration inFrame:[self bounds]];
-  const NSPoint point = decoration->GetBubblePointInFrame(frame);
+  NSPoint point;
+  if (ui::MaterialDesignController::IsSecondaryUiMaterial()) {
+    // Under MD, dialogs have no arrow and anchor to corner of the decoration
+    // frame, not a specific point within it. See http://crbug.com/566115.
+    BOOL isLeftDecoration;
+    const NSRect frame =
+        [[self cell] backgroundFrameForDecoration:decoration
+                                          inFrame:[self bounds]
+                                 isLeftDecoration:&isLeftDecoration];
+    point.y = NSMaxY(frame);
+    point.x = isLeftDecoration ? NSMinX(frame) : NSMaxX(frame);
+  } else {
+    const NSRect frame =
+        [[self cell] frameForDecoration:decoration inFrame:[self bounds]];
+    point = decoration->GetBubblePointInFrame(frame);
+  }
+
   return [self convertPoint:point toView:nil];
 }
 
 // TODO(shess): -resetFieldEditorFrameIfNeeded is the place where
 // changes to the cell layout should be flushed.  LocationBarViewMac
 // and ToolbarController are calling this routine directly, and I
 // think they are probably wrong.
 // http://crbug.com/40053
 - (void)updateMouseTracking {
   // This will force |resetCursorRects| to be called, as it is not to be called
@@ skipping 280 matching lines @@
                                   NSMinY(frame),
                                   suggestWidth,
                                   NSHeight(frame));
 
   gfx::ScopedNSGraphicsContextSaveGState saveGState;
   NSRectClip(suggestRect);
   [cell drawInteriorWithFrame:frame inView:controlView];
 }
 
 }  // namespace autocomplete_text_field