Refresh Rect bounds when WindowCoordinate < 0

When the View is partially outside of the Window, the rectangle
bounds should be recalculated with the assumption that the View
is started from the edges.
This will make sure that Autofill popup shows up on top/bottom
of the correct input field, when input fields doesn't fit inside
the Window.

Bug: 828759
Change-Id: I253fc9febe93e90058f95923a18cdfe5363d2186
Reviewed-on: https://chromium-review.googlesource.com/1044529Reviewed-by: David Trainor <dtrainor@chromium.org>
Commit-Queue: Amirhossein Simjour <asimjour@chromium.org>
Cr-Commit-Position: refs/heads/master@{#557953}

ui/android/java/src/org/chromium/ui/widget/ViewRectProvider.java

@@ -110,8 +110,8 @@ public class ViewRectProvider extends RectProvider
         int previousPositionY = mCachedWindowCoordinates[1];
         mView.getLocationInWindow(mCachedWindowCoordinates);
 
-        // Return if the window position is invalid.
-        if (mCachedWindowCoordinates[0] < 0 || mCachedWindowCoordinates[1] < 0) return;
+        mCachedWindowCoordinates[0] = Math.max(mCachedWindowCoordinates[0], 0);
+        mCachedWindowCoordinates[1] = Math.max(mCachedWindowCoordinates[1], 0);
 
         // Return if the window coordinates haven't changed.
         if (mCachedWindowCoordinates[0] == previousPositionX
@@ -144,6 +144,9 @@ public class ViewRectProvider extends RectProvider
         mRect.right = Math.max(mRect.left, mRect.right);
         mRect.bottom = Math.max(mRect.top, mRect.bottom);
 
+        mRect.right = Math.min(mRect.right, mView.getRootView().getWidth());
+        mRect.bottom = Math.min(mRect.bottom, mView.getRootView().getHeight());
+
         notifyRectChanged();
     }
 }