Don't ignore size updates that have a width and height == 0.

Source/web/tests/WebFrameTest.cpp

Index: Source/web/tests/WebFrameTest.cpp
diff --git a/Source/web/tests/WebFrameTest.cpp b/Source/web/tests/WebFrameTest.cpp
index c1b744aad349f3524ec617b1376b4646cfb30d66..f6fef04984a589b44a673f0e6803dda88c2b7ba0 100644
--- a/Source/web/tests/WebFrameTest.cpp
+++ b/Source/web/tests/WebFrameTest.cpp
@@ -859,6 +859,24 @@ TEST_F(WebFrameTest, DisablingFixedLayoutSizeSetsCorrectLayoutSize)
     EXPECT_EQ(980, webViewHelper.webViewImpl()->mainFrameImpl()->frameView()->contentsSize().width());
 }
 
+TEST_F(WebFrameTest, ZeroHeightPositiveWidthNotIgnored)
+{
+    UseMockScrollbarSettings mockScrollbarSettings;
+
+    FixedLayoutTestWebViewClient client;
+    client.m_screenInfo.deviceScaleFactor = 1;
+    int viewportWidth = 640;
+    int viewportHeight = 0;
+
+    FrameTestHelpers::WebViewHelper webViewHelper;
+    webViewHelper.initialize(true, 0, &client, enableViewportSettings);
+    webViewHelper.webView()->settings()->setUseWideViewport(true);

[mnaganov (inactive), 2014/02/20 15:50:25]

I think this isn't needed, as wide viewport is turned on by default. Even having
it off will not do anything unless you enable WideViewportQuirk.

[mkosiba (inactive), 2014/02/20 15:59:32]

Done.

+    webViewHelper.webView()->resize(WebSize(viewportWidth, viewportHeight));
+
+    EXPECT_EQ(viewportWidth, webViewHelper.webViewImpl()->mainFrameImpl()->frameView()->layoutSize().width());
+    EXPECT_EQ(viewportHeight, webViewHelper.webViewImpl()->mainFrameImpl()->frameView()->layoutSize().height());
+}
+
 TEST_F(WebFrameTest, DeviceScaleFactorUsesDefaultWithoutViewportTag)
 {
     UseMockScrollbarSettings mockScrollbarSettings;