Make the constructor of a LayoutRect from an IntRect explicit.

Source/core/html/HTMLTextFormControlElementTest.cpp

 // Copyright 2014 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.
 
 #include "config.h"
 #include "core/html/HTMLTextFormControlElement.h"
 
 #include "core/dom/Position.h"
 #include "core/dom/Text.h"
 #include "core/editing/FrameSelection.h"
@@ skipping 97 matching lines @@
     EXPECT_EQ(3, textControl().selectionEnd());
 }
 
 TEST_F(HTMLTextFormControlElementTest, SetSelectionRangeDoesNotCauseLayout)
 {
     input().focus();
     input().setValue("Hello, input form.");
     input().setSelectionRange(1, 1);
     FrameSelection& frameSelection = document().frame()->selection();
     forceLayoutFlag();
-    LayoutRect oldCaretRect = frameSelection.absoluteCaretBounds();
+    LayoutRect oldCaretRect(frameSelection.absoluteCaretBounds());
     EXPECT_FALSE(oldCaretRect.isEmpty());
     int startLayoutCount = layoutCount();
     input().setSelectionRange(1, 1);
     EXPECT_EQ(startLayoutCount, layoutCount());
-    LayoutRect newCaretRect = frameSelection.absoluteCaretBounds();
+    LayoutRect newCaretRect(frameSelection.absoluteCaretBounds());
     EXPECT_EQ(oldCaretRect, newCaretRect);
 
     forceLayoutFlag();
-    oldCaretRect = frameSelection.absoluteCaretBounds();
+    oldCaretRect = LayoutRect(frameSelection.absoluteCaretBounds());
     EXPECT_FALSE(oldCaretRect.isEmpty());
     startLayoutCount = layoutCount();
     input().setSelectionRange(2, 2);
     EXPECT_EQ(startLayoutCount, layoutCount());
-    newCaretRect = frameSelection.absoluteCaretBounds();
+    newCaretRect = LayoutRect(frameSelection.absoluteCaretBounds());
     EXPECT_NE(oldCaretRect, newCaretRect);
 }
 
 typedef Position (*PositionFunction)(const Position&);
 typedef VisiblePosition(*VisblePositionFunction)(const VisiblePosition&);
 
 void testFunctionEquivalence(const Position& position, PositionFunction positionFunction, VisblePositionFunction visibleFunction)
 {
     VisiblePosition visiblePosition(position);
     VisiblePosition expected = visibleFunction(visiblePosition);
@@ skipping 76 matching lines @@
     ASSERT_EQ(3, input->selectionStart());
 
     OwnPtrWillBePersistent<SpellChecker> spellChecker(SpellChecker::create(page().frame()));
     forceLayoutFlag();
     int startCount = layoutCount();
     spellChecker->respondToChangedSelection(oldSelection, FrameSelection::CloseTyping | FrameSelection::ClearTypingStyle);
     EXPECT_EQ(startCount, layoutCount());
 }
 
 }