Make sure that 30%of restored window is always visible.

ash/wm/base_layout_manager.h

Index: ash/wm/base_layout_manager.h
diff --git a/ash/wm/base_layout_manager.h b/ash/wm/base_layout_manager.h
index 7fe25e5fe678418612880e32d2fe1d1e6422f110..42bae4d3699a910731a762548dddc41350dffd80 100644
--- a/ash/wm/base_layout_manager.h
+++ b/ash/wm/base_layout_manager.h
@@ -77,8 +77,8 @@ class ASH_EXPORT BaseLayoutManager
 
  protected:
   enum AdjustWindowReason {
-    ADJUST_WINDOW_SCREEN_SIZE_CHANGED,
-    ADJUST_WINDOW_DISPLAY_INSETS_CHANGED,
+    ADJUST_WINDOW_DISPLAY_SIZE_CHANGED,
+    ADJUST_WINDOW_WORK_AREA_INSETS_CHANGED,
     ADJUST_WINDOW_WINDOW_ADDED
   };
 
@@ -86,18 +86,20 @@ class ASH_EXPORT BaseLayoutManager
   virtual void ShowStateChanged(aura::Window* window,
                                 ui::WindowShowState last_show_state);
 
-  // Adjusts the window sizes when the screen changes its size or its
-  // work area insets. If this is called for a screen size change (i.e. |reason|
+  // Adjusts the window's bounds when the display area changes for given
+  // window. This happens when the display size, work area insets or
+  // the display on which the window exists has changd.
+  // If this is called for a display size change (i.e. |reason|
   // is ADJUST_WINDOW_SCREEN_SIZE_CHANGED), the non-maximized/non-fullscreen
   // windows are readjusted to make sure the window is completely within the
   // display region. Otherwise, it makes sure at least some parts of the window
   // is on display.
-  virtual void AdjustWindowSizesForScreenChange(AdjustWindowReason reason);
+  virtual void AdjustWindowsBounds(AdjustWindowReason reason);

[Mr4D (OOO till 08-26), 2013/08/06 20:22:51]

I actually liked the previous name much more since it stated what it does.
"AdjustWindowBounds" might get misused. What about
AdjustWindowSizesForWorkAreaChange?

[oshima, 2013/08/06 23:13:20]

It actually didn't state what it does, and that's why I wanted to rename it.
It does change bounds, not just size, and reason covers more scenarios
not just screen change. How about

AdjustWindowsBoundsForWorkAreaChange (with CHECK to reject ADDED because it
doesn't make sense in this scenario)

and

AdjustWindowBounds

?

 
   // Adjusts the sizes of the specific window in respond to a screen change or
   // display-area size change.
-  virtual void AdjustWindowSizeForScreenChange(aura::Window* window,
-                                               AdjustWindowReason reason);
+  virtual void AdjustWindowBounds(aura::Window* window,
+                                  AdjustWindowReason reason);

[Mr4D (OOO till 08-26), 2013/08/06 20:22:51]

Same here.

 
   aura::RootWindow* root_window() { return root_window_; }