Add CanMinimize to classes that implement WidgetDelegate::CanMaximize.

There were some cases where we use CanMaximize to determine if
minimization should be disabled. They now use CanMinimize:
- custom_frame_view_ash
- hwnd_message_handler

All classes that implement CanMaximize now implement
CanMinimize in the same way, so there should no change in
behavior.

BUG=328241,341010

Review URL: https://codereview.chromium.org/583603004

Cr-Commit-Position: refs/heads/master@{#296381}

4 files changed, 12 insertions, 3 deletions

diff --git a/ash/frame/caption_buttons/frame_caption_button_container_view_unittest.cc b/ash/frame/caption_buttons/frame_caption_button_container_view_unittest.cc
index a487005..682883c 100644
--- a/ash/frame/caption_buttons/frame_caption_button_container_view_unittest.cc
+++ b/ash/frame/caption_buttons/frame_caption_button_container_view_unittest.cc
@@ -28,6 +28,10 @@ class TestWidgetDelegate : public views::WidgetDelegateView {
     return can_maximize_;
   }
 
+  virtual bool CanMinimize() const OVERRIDE {
+    return can_maximize_;
+  }
+
  private:
   bool can_maximize_;
 
diff --git a/ash/frame/caption_buttons/frame_size_button_unittest.cc b/ash/frame/caption_buttons/frame_size_button_unittest.cc
index 02c6023..8736308 100644
--- a/ash/frame/caption_buttons/frame_size_button_unittest.cc
+++ b/ash/frame/caption_buttons/frame_size_button_unittest.cc
@@ -40,6 +40,9 @@ class TestWidgetDelegate : public views::WidgetDelegateView {
   virtual bool CanMaximize() const OVERRIDE {
     return true;
   }
+  virtual bool CanMinimize() const OVERRIDE {
+    return true;
+  }
 
   ash::FrameCaptionButtonContainerView* caption_button_container() {
     return caption_button_container_;
diff --git a/ash/frame/custom_frame_view_ash.cc b/ash/frame/custom_frame_view_ash.cc
index 450015a..f4422fc 100644
--- a/ash/frame/custom_frame_view_ash.cc
+++ b/ash/frame/custom_frame_view_ash.cc
@@ -202,10 +202,8 @@ CustomFrameViewAsh::HeaderView::HeaderView(views::Widget* frame)
       avatar_icon_(NULL),
       caption_button_container_(NULL),
       fullscreen_visible_fraction_(0) {
-  // Unfortunately, there is no views::WidgetDelegate::CanMinimize(). Assume
-  // that the window frame can be minimized if it can be maximized.
   FrameCaptionButtonContainerView::MinimizeAllowed minimize_allowed =
-      frame_->widget_delegate()->CanMaximize() ?
+      frame_->widget_delegate()->CanMinimize() ?
           FrameCaptionButtonContainerView::MINIMIZE_ALLOWED :
           FrameCaptionButtonContainerView::MINIMIZE_DISALLOWED;
   caption_button_container_ = new FrameCaptionButtonContainerView(frame_,
diff --git a/ash/frame/custom_frame_view_ash_unittest.cc b/ash/frame/custom_frame_view_ash_unittest.cc
index 3bcf912..f947692 100644
--- a/ash/frame/custom_frame_view_ash_unittest.cc
+++ b/ash/frame/custom_frame_view_ash_unittest.cc
@@ -68,6 +68,10 @@ class TestWidgetConstraintsDelegate : public TestWidgetDelegate {
     return true;
   }
 
+  virtual bool CanMinimize() const OVERRIDE {
+    return true;
+  }
+
   void set_minimum_size(const gfx::Size& min_size) {
     minimum_size_ = min_size;
   }